In the Matter of Implementation of the Local Competition Provisions in the Telecommunications Act of 1996; Interconnection between Local Exchange Carriers and Commercial Mobile Radio Service Providers CC Docket No. 96-98; CC Docket No. 95-185 FEDERAL COMMUNICATIONS COMMISSION 1996 FCC LEXIS 4312 RELEASE-NUMBER: FCC 96-325 August 8, 1996 Released; Adopted August 1, 1996 ACTION: [*1] FIRST REPORT AND ORDER [PART 2 OF 5] JUDGES: By the Commission: Chairman Hundt and Commissioners Quello, Ness, and Chong issuing separate statements. OPINION: 418. We conclude that customized routing, which permits requesting carriers to designate the particular outgoing trunks that will carry certain classes of traffic originating from the competing provider's customers, is technically feasible in many LEC switches. Customized routing will enable a competitor to direct particular classes of calls to particular outgoing trunks, which will permit a new entrant to self-provide, or select among other providers of, interoffice facilities, operator services, and directory assistance. n927 Bell Atlantic notes that customized routing is generally technically feasible for local calling, although it notes that the technology and capacity constraints vary from switch to switch. n928 SBC contends that customized routing is technically feasible for older switches, such as the 1AESS switch. n929 AT&T acknowledges that, although the ability to establish customized routing in 1AESS switches may be affected by the "call load" in each office, only 9.8% of the switches used by the seven RBOCs, GTE and SNET are 1AESS [*2] switches. n930 We recognize that the ability of an incumbent LEC to provide customized routing to a requesting carrier will depend on the capability of the particular switch in question. Thus, our requirement that incumbent LECs provide customized routing as part of the "functionality" of the local switching element applies, by definition, only to those switches that are capable of performing customized routing. An incumbent LEC must prove to the state commission that customized routing in a particular switch is not technically feasible. n927 See, e.g., AT&T June 28 Ex Parte. In addition, we note that the Illinois Commission recently directed Ameritech and Centel to permit a carrier purchasing wholesale local exchange service to designate a provider of operator services and directory assistance other than that of the incumbent LEC. Such access is accomplished through the routing of such calls from the incumbent LEC's switch to the competing provider of the operator service or directory assistance. See Illinois Wholesale Order at 45. n928 Letter from Patricia Koch, Assistant Vice President, Bell Atlantic, to William Caton, Acting Secretary, FCC, June 24, 1996 (Bell Atlantic June 24 Ex Parte); see also BellSouth comments at 41-42 n.89 (the ability to provide customized routing depends on the quantity of customized routing requests from other competitors). [*3] n929 SBC comments at 41-42. n930 Letter from Bruce Cox, Government Affairs Director, AT&T, to William F. Caton, Secretary, FCC, July 11, 1996 (AT&T July 11 Ex Parte). 419. Section 251(d)(2)(A) requires the Commission, in determining which network elements should be made available to competing providers, to consider "whether access to such network elements as are proprietary in nature is necessary." n931 To withhold a proposed network element from a competing provider, an incumbent LEC must demonstrate that the element is proprietary and that gaining access to that element is not necessary because the competing provider can use other, nonproprietary elements in the incumbent LEC's network to provide service. n932 U S West asserts that switch unbundling could raise concerns involving, among other things, "licensing of intellectual property." It cites a request by one interconnector to be the exclusive provider of particular features in U S West's generic switching software. n933 Bell Atlantic states that it is not at liberty to sub-license the software that operates vertical switching features. n934 We note, however, that these incumbent LECs do not object to providing [*4] vertical switching functionalities to requesting carriers under the resale provision of section 251(c)(4). n935 In addition, the vast majority of parties that discuss unbundled local switching do not raise proprietary concerns with the unbundling of either basic local switching or vertical switching features. Even if we accept the claim of U S West and Bell Atlantic that vertical features are proprietary in nature, these carriers do not meet the second consideration in our section 251(d)(2)(A) standard, which requires an incumbent LEC to show that a new entrant could offer the proposed telecommunications service through the use of other, nonproprietary elements in the incumbent LEC's network. n936 Accordingly, we find that access to unbundled local switching is clearly "necessary" under our interpretation of section 251(d)(2)(A). n937 n931 47 U.S.C. @ 251(d)(2)(A). n932 See supra Section V.E. n933 U S West comments at 55 n.117. n934 Bell Atlantic comments, Albers Attachment at 17-18. n935 U S West reply at 26-27; Bell Atlantic comments at 26. n936 See supra Section V.E. n937 Id. 420. Section 251(d)(2)(B) directs the Commission to consider [*5] whether the failure to provide access to an unbundled element "would impair the ability of the telecommunications carrier seeking access to provide the services that it seeks to offer." n938 We have interpreted the term "impair" to mean either increased cost or decreased service quality that would result from using network elements of the incumbent LEC other than the one sought. n939 SBC and MFS contend that access to unbundled local switching may not be essential for new entrants because competitors are likely to deploy their own switches. n940 These parties present no evidence that competitors could provide service using another element in the LEC's network at the same cost and at the same level of quality. In addition, most commenters that address this issue generally argue that local switching is essential for the provision of competing local service, n941 and we agree. We thus conclude that a requesting carrier's ability to offer local exchange services would be impaired, if not thwarted, without access to an unbundled local switching element. n938 47 U.S.C. @ 251(d)(2)(B). n939 See supra Section V.E. n940 SBC reply at 23; MFS comments at 46. n941 See, e.g., LDDS reply at 18 (unbundled local switching is "critical" to local competition); TIA comments at 18; AT&T Mar. 21 Letter at 17-18. [*6] 421. Section 251(c)(3) requires that incumbent LECs provide access to unbundled network elements on terms and conditions that are "just, reasonable, and nondiscriminatory." n942 We agree with CompTel and LDDS that new entrants will be disadvantaged if customer switchover is not rapid and transparent. We also note that the Michigan Commission has recognized the significance of customer switchover intervals and has directed Ameritech and GTE to file proposals on how they will "ensure the equal availability of expeditious processing of local, interLATA, and intraLATA carrier changes." n943 Therefore, we require incumbent LECs to switch over customers for local service in the same interval as LECs currently switch end users between interexchange carriers. This requirement applies to switchovers that only require the incumbent LEC to make changes to software. Switchovers that require the incumbent LEC to make physical modifications to its network, such as connecting a competitor's loop to its switch, are not subject to this requirement, and instead are governed by our terms and conditions for all unbundled elements. n944 Today, incumbent LECs routinely change customers' presubscribed [*7] interexchange carriers quickly and transparently, thereby contributing to the competitiveness of the interexchange market. We expect that a similar requirement for local exchange switchovers that require only a software change will similarly contribute to local exchange competition. n942 47 U.S.C. @ 251(c)(3). n943 In the Matter, On the Commission's Own Motion, To Establish Permanent Interconnection Arrangements Between Basic Local Exchange Service Providers, Opinion and Order, Mich. Pub. Serv. Comm'n, Case No. U-10860, at 36-37 (June 5, 1996). n944 See supra Section V.G., discussing provisioning intervals for unbundled network elements. 422. We reject the proposal by some incumbent LECs to define unbundled local switching as the facilities that provide a point of access to the switch, but that would not actually include switching functionality. Under this definition, the purchaser of the local switching element would not actually obtain local switching, only the right to purchase local switching functionality and other switching features at wholesale rates. We believe that the unbundled local switching element must include the functionality of connecting lines [*8] and trunks. The definition proposed by these incumbent LECs would contravene the requirement in section 251(c)(3) that incumbent LECs provide network elements "in a manner that allows requesting carriers to combine such elements in order to provide such telecommunications service." n945 If a competing provider combined its own loops and transport with the local switching element ("point of access"), it would be unable to provide telecommunications service without separately purchasing, at wholesale rates, switching functionality from the incumbent LEC. n945 47 U.S.C. @ 251(c)(3). 423. We also disagree with the proposal to define local switching as a point of access plus basic switching functionality, but that would exclude vertical switching features. n946 As a legal matter, this definition is inconsistent with the 1996 Act's definition of "network element," which includes all the "features, functionalities, and capabilities provided by means of such facility or equipment." n947 In addition, this definition would not fulfill the pro-competitive objectives of the 1996 Act as effectively as the per-line definition we adopt. A competitor that obtains basic and vertical switching [*9] features at cost-based rates will have maximum flexibility to distinguish its offerings from those of the incumbent LEC by developing a variety of service packages and pricing plans. n948 Moreover, an upfront purchase of all local switching features may speed entry by simplifying practical issues such as the pricing of individual switching features. n946 Sprint comments at 34; USTA reply at 16-17; SBC reply at 20; NYNEX reply at 31; MECA comments at 29. n947 47 U.S.C. @ 153(29); see supra section V.C., which interprets the Act's definition of "network element." n948 See, e.g., LDDS comments at 33; AT&T comments at 21. 424. We also address the impact on small incumbent LECs. For example, the Illinois Independent Telephone Association and the Rural Telephone Coalition favor rules that recognize the differences between larger and smaller LECs. n949 We have considered the economic impact of our rules in this section on small incumbent LECs. In this section, for example, we expressly provide for the fact that certain LECs may possess switches that are incapable of performing customized routing for competitors that purchase unbundled local switching. As noted by Rural [*10] Telephone Coalition and the Illinois Independent Telephone Coalition, this approach is necessary to accommodate the different technical capabilities of large and small carriers. We also note that section 251(f) of the 1996 Act provides relief for certain small LECs from our regulations under section 251. n949 Illinois Ind. Tel. Ass'n comments at 1; Rural Tel. Coalition reply at 37. (2) Tandem Switching Capability 425. We also affirm our tentative conclusion in the NPRM that it is technically feasible for incumbent LECs to provide access to their tandem switches unbundled from interoffice transmission facilities. We note that some states already have required incumbent LECs to unbundle tandem switching. n950 Parties do not contend, pursuant to section 251(d)(2)(A), that tandem switches are proprietary in nature. With regard to section 251(d)(2)(B), we find that competitors' ability to provide telecommunications service would be impaired without unbundled access to tandem switching. Therefore, we find that the availability of unbundled tandem switching will ensure that competitors can deploy their own interoffice facilities and connect them to incumbent LECs' tandem switches [*11] where it is efficient to do so. n950 See, e.g., Ameritech comments at 43, Cincinnati Bell comments at 18, GTE comments at 38, AT&T March 21 Letter at 23. 426. We define the tandem switch element as including the facilities connecting the trunk distribution frames to the switch, and all the functions of the switch itself, including those facilities that establish a temporary transmission path between two other switches. The definition of the tandem switching element also includes the functions that are centralized in tandems rather than in separate end office switches, such as call recording, the routing of calls to operator services, and signaling conversion functions. (3) Packet Switching Capability 427. At this time, we decline to find, as requested by AT&T and MCI, that incumbent LECs' packet switches should be identified as network elements. Because so few parties commented on the packet switches in connection with section 251(c)(3), the record is insufficient for us to decide whether packet switches should be defined as a separate network element. We will continue to review and revise our rules, but at present, we do not adopt a national rule for the unbundling of packet [*12] switches. 3. Interoffice Transmission Facilities a. Background 428. In the NPRM, we proposed to require incumbent LECs to make available unbundled transport facilities in a manner that corresponds to the rate structure for interstate transport charges. We specifically proposed to require unbundled access to links between the end office and the serving wire center (SWC), the SWC and the IXC point of presence (POP), the end office and the tandem switch, and the tandem switch and the SWC. We also tentatively concluded that incumbent LECs should be required to unbundle channel termination facilities for special access from the interoffice facilities. In addition, we requested comment on whether and how other interoffice facilities used by incumbent LECs should be unbundled. b. Comments 429. The vast majority of the parties that discussed local transport unbundling supported the Commission's proposal to provide access to dedicated and shared interoffice facilities as unbundled network elements. n951 BellSouth, for example, asserts that individual transport components should be available as unbundled elements, and notes that some LECs already have unbundled transport from its other [*13] access services. n952 n951 AT&T comments at 22; USTA comments at 35; Frontier comments at 16; GCI comments at 12; Sprint comments at 39; GST comments at 24; NYNEX comments at 63; NEXTLINK comments at 23; ACSI comments at 41; MCI comments at 17; ALTS comments at 30; Citizens Utilities comments at 15; CompTel comments at 45; TIA comments at 13; Bell Atlantic comments at 22; U S West comments at 48; Teleport comments at 37; MFS comments at 48; USTA comments at 35; TCC comments at 35; New York Commission comments at 27; Ameritech comments at 43; BellSouth comments at 42. n952 BellSouth comments at 42-43. 430. Several incumbent LECs contend that they already provide unbundled transport services pursuant to the Commission's Expanded Interconnection rules. n953 PacTel asserts that its proposal to tariff unbundled transport elements, including dedicated transport and tandem-switched transport, will fulfill its duties under sections 251 and 271. n954 Bell Atlantic and TIA, on the other hand, indicate that existing tariffs for unbundled transport facilities are insufficient to comply with the 1996 Act. n955 MFS asks the Commission to clarify that, under the expanded interconnection [*14] rules as well as the 1996 Act, incumbent LECs must unbundle all interoffice transport facilities without requiring the requesting carrier to purchase channel terminations or other elements. n956 n953 Ameritech comments at 42-43; Cincinnati Bell comments at 18; GTE comments at 38. n954 PacTel comments at 57. n955 Bell Atlantic comments at 27 (Bell Atlantic has already filed, or plans to file, intrastate tariffs for the network elements it has unbundled under expanded interconnection.); TIA comments at 13. n956 MFS comments at 48; accord AT&T comments at 22; MCI comments at 17. 431. Parties agree that local transport unbundling is technically feasible. n957 MCI, for example, asserts that transport facilities are already unbundled for exchange access and thus there is no question that unbundling is technically feasible. n958 NCTA, GST, TIA, and MFS contend that unbundling transport elements should be presumed technically feasible because of the Commission's Expanded Interconnection proceeding. n959 AT&T and Telecommunications Resellers Association point out that IXCs currently obtain interconnections between transport elements and the tandem switches pursuant [*15] to standard specifications. n960 n957 See, e.g., GST comments at 24; AT&T comments at 22; GTE reply at 18-19; GVNW comments at 28; NYNEX comments at 65; MCI comments at 32; Comcast comments at 18; CompTel comments at 31; NCTA comments at 42; MFS comments at 48; Telecommunications Resellers Ass'n comments at 35; Ameritech comments at 43. n958 MCI comments at 32. n959 NCTA comments at 42; GST comments at 24; TIA comments at 13; MFS comments at 47-48. n960 AT&T comments at 22; Telecommunications Resellers Ass'n comments at 35. 432. A number of commenters specify particular components of local transport that should be unbundled: (1) dedicated transport trunks from incumbent LEC end offices to competitors' switches, to IXC POPs, and to other end offices of the incumbent LEC; and (2) common transport trunks between incumbent LEC end offices and tandem switches. n961 In addition, ALTS, MFS, AT&T, and MCI contend that requesting carriers should have the ability to order such transport trunks with or without electronics (i.e., as "dark fiber"). n962 GTE disagrees and argues that the definition of network element only encompasses facilities "used in the provision [*16] of telecommunications service," and that dark fiber does not meet this definition because LECs do not "use" it in their networks. n963 n961 See, e.g., AT&T comments at 22; NYNEX comments at 62-63; GVNW comments at 20; TCC reply at 18; ACSI comments, Attachment 1 at 5-6. n962 ALTS comments at 30; MCI comments at 32; AT&T comments at 22; MFS comments at 48. n963 GTE reply at 21. 433. Several parties ask that the Commission specify additional transport components as unbundled network elements beyond those proposed in the NPRM. AT&T contends that incumbent LECs should have to unbundle their digital cross-connect systems (DCSs), which are now used to disaggregate high-speed traffic from IXCs into individual circuits. n964 MCI and AT&T contend that these facilities will enable IXCs to use more cost-efficient, high-speed facilities to route traffic to the incumbent LEC and have the traffic disaggregated into individual circuits at the DCS. n965 CompTel asserts that, when direct-trunked transport transits a tandem switch or other intermediate node, incumbent LECs should offer each individual link as an unbundled element. n966 MCI also asserts that competitors need "loop [*17] transport" to carry traffic from the incumbent's unbundled loops to the competitor's switch. n967 n964 AT&T comments at 22 n.23; accord SBC comments at 87. n965 AT&T comments at 22; MCI comments at 17. n966 CompTel comments at 45. n967 MCI comments at 22. 434. A number of parties assert that the availability of unbundled transport facilities would promote local competition. AT&T contends that it seeks to combine unbundled common transport with competitive tandem switching and dedicated transport to provide IXCs with alternative access service from the competitor's end office to the IXC POP. n968 AT&T, Telecommunications Resellers Association, and TIA assert that the availability of unbundled dedicated transport will allow competitors to connect their switches to incumbent LEC switches efficiently. n969 MCI contends that incumbent LECs have denied MCI access to trunks between the incumbent LECs' end offices, thereby increasing MCI's costs of deploying local facilities and restricting MCI's ability to acquire redundant facilities for its local traffic. n970 NYNEX and LDDS recommend that the Commission require incumbent LECs to offer unbundled dedicated transport [*18] between their own end office or tandem switches and the requesting carrier's switch or POP. n971 The Texas Public Utility Commission has specifically required incumbent LECs to provide competitors with "loop facilities transport service," which connects an unbundled loop to the competitor's switch. n972 n968 AT&T Mar. 21 Letter at 22. n969 Id.; Telecommunications Resellers Ass'n comments at 35; TIA comments at 13. n970 MCI comments at 46. n971 NYNEX comments at 63 n.126; LDDS reply at 18. n972 Texas Commission comments at 18. 435. Several parties caution that pricing distortions could accompany a ruling that transport components are network elements under section 251(c)(3). n973 GTE, for example, argues that the Commission should not permit requesting carriers to use unbundled transport elements to avoid access charges. n974 Similarly, Ameritech states that the 1996 Act prohibits arbitrary price distinctions between switched and special transport, and that, if interoffice facilities are unbundled from tandem switching, no such distinction can be made. n975 Other parties maintain that the 1996 Act requires cost-based pricing of all unbundled elements, [*19] including transport elements. n976 n973 See e.g., GTE comments at 38; CompTel comments at 45; Ameritech comments at 43. n974 GTE comments at 38. n975 Ameritech comments at 43. n976 ACSI comments at 42; MCI comments at 32. 436. A few parties oppose a requirement that incumbent LECs unbundle facilities that correspond to interstate transport and special access rate elements. n977 Cincinnati Bell argues that these elements are already available through existing tariffs, and therefore should not be required to be offered as unbundled elements pursuant to the 1996 Act. n978 MECA argues that local transport and special access facilities are toll access facilities and therefore are not necessary to provide competitive basic local exchange service. n979 MECA also states that any requirement concerning local transport and special access should not apply to any LEC that was not covered by the MFJ restrictions and, in order to minimize arbitrage opportunities, any modifications to local transport and special access must wait until the LECs have restructured their local rates. n980 n977 See, e.g., MECA comments at 38; Cincinnati Bell comments at 18. n978 Cincinnati Bell comments at 18. [*20] n979 MECA comments at 38. n980 MECA comments at 38. 437. TCC urges the Commission to define dedicated transport as an interoffice transmission path dedicated to a single carrier, including multiplexing and grooming, redundant facilities, and cross-office wiring to a digital cross-connect panel. n981 ACSI argues that the Commission should require incumbent LECs to make both dedicated and switched transport available at the DS-0, DS-1, DS-3 and Optical Carrier levels, which should be offered as completely unbundled links between serving wire centers (SWCs) and interconnector points-of-presence, the central office and the SWC, the end office and the tandem, and the SWC and the tandem. n982 Teleport advocates that interoffice trunking facilities be defined in terms of their underlying transmission characteristics without reference to the use of the facility. n983 n981 TCC comments at 38; see also NYNEX comments at 63 for a similar definition. n982 ACSI comments at 41. n983 Teleport comments at 37. 438. ALTS argues that, since there are currently well-defined standards for transport, there should be no impediment to requiring equivalent levels of technical [*21] performance among competing carriers, i.e., no meaningful distinctions among the technical performance of different DS1s. n984 Therefore, as in the case with local loops, ALTS contends that competitors should receive the same or better ordering, provisioning, and installation service as the incumbent provides itself and that penalties should be assessed if deadlines are not met. n985 n984 ALTS comments at 30. n985 Id. at 30-31. c. Discussion 439. We conclude that incumbent LECs must provide interoffice transmission facilities on an unbundled basis to requesting carriers. The record supports our conclusion that such access is technically feasible and would promote competition in the local exchange market. We note that the 1996 Act requires BOCs to unbundle transport facilities prior to entering the in-region, interLATA market. n986 n986 47 U.S.C. @ 271(c)(2)(B)(v). 440. We require incumbent LECs to provide unbundled access to shared transmission facilities between end offices and the tandem switch. n987 Further, incumbent LECs must provide unbundled access to dedicated transmission facilities between LEC central offices or between such offices and those of competing [*22] carriers. This includes, at a minimum, interoffice facilities between end offices and serving wire centers (SWCs), SWCs and IXC POPs, tandem switches and SWCs, end offices or tandems of the incumbent LEC, and the wire centers of incumbent LECs and requesting carriers. The incumbent LEC must also provide, to the extent discussed below, all technically feasible transmission capabilities, such as DS1, DS3, and Optical Carrier levels (e.g. OC-3/12/48/96) that the competing provider could use to provide telecommunications services. We conclude that an incumbent LEC may not limit the facilities to which such interoffice facilities are connected, provided such interconnection is technically feasible, or the use of such facilities. In general, this means that incumbent LECs must provide interoffice facilities between wire centers owned by incumbent LECs or requesting carriers, or between switches owned by incumbent LECs or requesting carriers. For example, an interoffice facility could be used by a competitor to connect to the incumbent LEC's switch or to the competitor's collocated equipment. We agree with the Texas Commission that a competitor should have the ability to use interoffice [*23] transmission facilities to connect loops directly to its switch. We anticipate that these requirements will reduce entry barriers into the local exchange market by enabling new entrants to establish efficient local networks by combining their own interoffice facilities with those of the incumbent LEC. n987 Section V.I. addresses unbundled access to the tandem switching element. 441. The ability of new entrants to purchase the interoffice facilities we have identified will increase the speed with which competitors enter the market. By unbundling various dedicated and shared interoffice facilities, a new entrant can purchase all interoffice facilities on an unbundled basis as part of a competing local network, or it can combine its own interoffice facilities with those of the incumbent LEC. The opportunity to purchase unbundled interoffice facilities will decrease the cost of entry compared to the much higher cost that would be incurred by an entrant that had to construct all of its own facilities. An efficient new entrant might not be able to compete if it were required to build interoffice facilities where it would be more efficient to use the incumbent LEC's facilities. We [*24] recognize that there are alternative suppliers of interoffice facilities in certain areas. We are convinced, however, that entry will be facilitated if competitors have greater, not fewer, options for procuring interoffice facilities as part of their local networks, and that Congress intended for competitors to have these options available from competitors. Thus, the rules we establish for the unbundled interoffice facilities should maximize a competitor's flexibility to use new technologies in combination with existing LEC facilities. 442. We find that it is technically feasible for incumbent LECs to unbundle the foregoing interoffice facilities as individual network elements. The interconnection and unbundling arrangements among the larger LECs, IXCs, and CAPs that resulted from our Expanded Interconnection rules confirm the technical feasibility of unbundling interoffice facilities used by incumbent LECs to provide special access and switched transport. n988 As AT&T and Telecommunications Resellers Association point out, IXCs currently interconnect with incumbent LECs' transport facilities pursuant to standard specifications. n989 We also note that commenters do not identify technical [*25] feasibility problems with unbundling interoffice facilities. n988 See, e.g., MCI comments at 32; NCTA comments at 42; GST comments at 24; TIA comments at 13; MFS comments at 47-48. n989 AT&T comments at 22; Telecommunications Resellers Ass'n comments at 35. 443. We also find that it is technically feasible for incumbent LECs to unbundle certain interoffice facilities not addressed in our Expanded Interconnection proceeding. First, we conclude that an incumbent LEC must provide unbundled access to interoffice facilities between its end offices, and between any of its switching offices and a new entrant's switching office, where such interoffice facilities exist. This allows a new entrant to purchase unbundled facilities between two end offices of the incumbent LEC, or between the new entrant's switching office and the incumbent LEC's switching office. Although our Expanded Interconnection rules did not specifically require incumbent LECs to unbundle these facilities, commenters do not identify any potential technical problem with such unbundling. Moreover, some LECs already offer unbundled dedicated interoffice facilities, for example, between their end offices and SWCs [*26] for exchange access. 444. In addition, as a condition of offering unbundled interoffice facilities, we require incumbent LECs to provide requesting carriers with access to digital cross-connect system (DCS) functionality. A DCS aggregates and disaggregates high-speed traffic carried between IXCs' POPs and incumbent LECs' switching offices, thereby facilitating the use of cost-efficient, high-speed interoffice facilities. AT&T notes that the BOCs, GTE, and other large LECs currently make DCS capabilities available for the termination of interexchange traffic. n990 We find that the use of DCS functionality could facilitate competitors' deployment of high-speed interoffice facilities between their own networks and LECs' switching offices. Therefore, we require incumbent LECs to offer DCS capabilities in the same manner that they offer such capabilities to IXCs that purchase transport services. n990 Letter from Bruce Cox, Government Affairs Director, AT&T, to William F. Caton, Acting Secretary, FCC, July 18, 1996. 445. We disagree with PacTel's assertion that it is not technically feasible for incumbent LECs to provide DCS functionality to competitors that purchase unbundled [*27] interoffice facilities. n991 First, contrary to PacTel's assertion, we do not require incumbent LECs to develop new arrangements for the offering of DCS capabilities to competitors. We only require that DCS capabilities be made available to competitors to the extent incumbent LECs offer such capabilities to IXCs. Second, PacTel suggests the provision of DCS capabilities requires physical partitioning of the DCS equipment in order to prevent carriers from gaining control of each other's traffic. n992 We do not require such partitioning for the provision of DCS capabilities. As noted above, we only require incumbent LECs to permit competitors to use DCS funtionality in the same manner that incumbent LECs now permit IXCs to use such functionality. n991 Letter from Alan Ciamporcero, Vice President, PacTel, to William F. Caton, Acting Secretary, FCC, July 17, 1996 (PacTel July 17 Ex Parte). n992 Id. 446. Section 251(d)(2)(A) requires the Commission to consider whether "access to such network elements as are proprietary in nature is necessary." n993 Commenters do not identify any proprietary concerns relating to the provision of interoffice facilities that LECs are required [*28] to unbundle. We also note that many of these facilities are also currently offered on an unbundled basis to competing carriers. Therefore, the record provides no basis for withholding these facilities from competitors based on proprietary considerations. n993 47 U.S.C. @ 251(d)(2)(A). 447. Section 251(d)(2)(B) requires the Commission to consider whether the failure to provide access to an unbundled element "would impair the ability of the telecommunications carrier seeking access to provide the services that it seeks to offer." n994 We have interpreted the term "impair" to mean either increased cost or decreased service quality that would result from using network elements other than the one sought. n995 Certain commenters contend that unbundled access to these facilities would improve their ability to provide competitive local exchange and exchange access service. n996 MCI, for example, argues that its inability to obtain unbundled access to trunks between an incumbent LEC's end offices raises its cost of providing local service. n997 Accordingly, we conclude that the section 251(d)(2)(B) requires incumbent LECs to provide access to shared interoffice facilities and dedicated [*29] interoffice facilities between the above-identified points in incumbent LECs' networks, including facilities between incumbent LECs' end offices, new entrant's switching offices and LEC switching offices, and DCSs. We believe that access to these interoffice facilities will improve competitors' ability to design efficient network architecture, and in particular, to combine their own switching functionality with the incumbent LEC's unbundled loops. n998 n994 47 U.S.C. @ 251(d)(2)(B). n995 See supra Section V.E. n996 See, e.g., AT&T Mar. 21 Letter; LDDS Comments at 47. n997 MCI comments at 46. n998 See, e.g, MCI comments at 22. 448. We reject Cincinnati Bell's argument that existing tariffs for transport and special access services filed pursuant to our Expanded Interconnection rules fulfill our obligation to implement the requirements of section 251(c). n999 First, the Expanded Interconnection rules require the unbundling of interstate transport services only by Class A carriers n1000 whereas section 251(c) requires network unbundling by all incumbent LECs, except for carriers that are exempt under section 251(f) from our interconnection rules. n1001 [*30] Consequently, some non-Class A carriers that were not subject to our Expanded Interconnection requirements will be required to comply with the requirements of this Order. Second, we find that the Class A carriers' existing tariffs for unbundled transport elements do not satisfy the unbundling requirement of section 251(c), as suggested by Cincinnati Bell, because such tariffs are only for interstate access services, not for unbundled interoffice facilities. As such, existing federal tariffs for transport and special access exclude intrastate transport, and therefore are not equivalent to unbundled interoffice facilities, which we have determined to be nonjurisdicational in nature. n999 Cincinnati Bell comments at 18. n1000 Class A carriers are those exchange carriers having more than $ 100 million in total company regulated revenues. See 1990 Cost Support Order, 5 FCC Rcd 1364, (Com. Car. Bur. 1990); Commission Requirements for Cost Support Material to be Filed with 1989 Annual Access Tariffs, 4 FCC Rcd 1662, 1663 (Com. Car. Bur. 1988). n1001 See infra Section XII, addressing the exemption for rural LECs. 449. We also disagree with MECA, GTE, and Ameritech that [*31] we should consider "pricing distortions" in adopting rules for unbundled interoffice facilities. n1002 Section, below, addresses the pricing of unbundled network elements identified pursuant to section 251(c)(3) as it relates to our current access charge rules. Nor are we are persuaded by MECA's argument that incumbent LECs not subject to the MFJ should not be required to unbundle transport facilities because, according to MECA, such facilities are unnecessary for local competition. n1003 As discussed above, the ability of a new entrant to obtain unbundled access to incumbent LECs' interoffice facilities, including those facilities that carry interLATA traffic, is essential to that competitor's ability to provide competing telephone service. n1002 MECA comments at 38, GTE comments at 38; Ameritech comments at 43. n1003 MECA comments at 38. 450. We do not impose specific terms and conditions for the provision of unbundled interoffice facilities. We believe that the rules we establish in this Order for all unbundled network elements adequately address ALTS's concern regarding the provisioning, billing, and maintenance of unbundled transport facilities. n1004 We also decline [*32] at this time to address the unbundling of incumbent LECs' "dark fiber." Parties that address this issue do not provide us with information on whether dark fiber qualifies as a network element under sections 251(c)(3) and 251(d)(2). Therefore, we lack a sufficient record on which to decide this issue. We will continue to review and revise our rules in this area as necessary. n1004 Section V.G addresses terms and conditions governing incumbent LECs' provision of access to unbundled network elements. 451. Rural Telephone Coalition contends that incumbent LECs should not be required to construct new facilities to accommodate new entrants. n1005 We have considered the economic impact of our rules in this section on small incumbent LECs. In this section, for example, we expressly limit the provision of unbundled interoffice facilities to existing incumbent LEC facilities. We also note that section 251(f) of the 1996 Act provides relief for certain small LECs from our regulations under section 251. n1005 Rural Tel. Coalition reply at 36. 4. Databases and Signaling Systems a. Background (1) NPRM 452. In the NPRM, we tentatively concluded that incumbent LECs should be required [*33] to unbundle access to their signaling systems and databases as network elements. n1006 We asked commenters to identify points at which carriers interconnect with SS7 networks n1007 today, as well as the technical feasibility of establishing other points of access and interconnection. n1008 We also asked commenters to identify those signaling and database functions currently provided by incumbent LECs on an unbundled basis, and other functions not currently offered by incumbent LECs, that the parties believe should be offered on an unbundled basis. n1009 n1006 NPRM at para. 107. n1007 A signaling network that is physically separate from the voice networks. n1008 NPRM at para. 108. n1009 NPRM at para. 108. 453. In the NPRM, we noted the possibility that competitors that provide local exchange service using resold incumbent LEC services or unbundled elements might want to connect an alternative call processing database to the incumbent LEC's SS7 network in order to offer services and features not available through the incumbent LEC's own SS7 network databases. n1010 n1010 NPRM at para. 112. 454. We also sought comment on unbundling access to the Advanced [*34] Intelligent Network (AIN), and referenced our separate Intelligent Networks proceeding which deals with related issues. n1011 We sought comment on whether to unbundle access to AIN facilities and functionalities. n1011 NPRM at para. 113; see In the Matter of Intelligent Networks, CC Docket No. 91-346, Notice of Inquiry, 6 FCC Rcd 7256 (1991), Notice of Proposed Rulemaking, 8 FCC Rcd 6813 (1993) (Intelligent Networks). We incorporated the record of the Intelligent Network proceeding into this docket by reference. NPRM at para. 113 n.151. (2) SS7 Signaling Network Technology 455. Signaling systems facilitate the routing of telephone calls between switches. Most LECs employ signaling networks that are physically separate from their voice networks, and these "out-of-band" signaling networks simultaneously carry signaling messages for multiple calls. In general, most LECs' signaling networks adhere to a Bellcore standard Signaling System 7 (SS7) protocol. n1012 n1012 The SS7 protocol is widely used and has been adopted by Bellcore, the American National Standards Institute, and the International Telecommunication Union--Telecommunication Standardization Sector. See Bellcore, BOC Notes on the LEC Networks (1994). [*35] 456. SS7 networks use signaling links to transmit routing messages between switches, and between switches and call-related databases. A typical SS7 network includes a signaling link, which transmits signaling information in packets, from a local switch to a signaling transfer point (STP), which is a high-capacity packet switch. n1013 The STP switches packets onto other links according to the address information contained in the packet. n1014 These additional links extend to other switches, databases, and STPs in the LEC's network. n1015 A switch routing a call to another switch will initiate a series of signaling messages via signaling links through an STP to establish a call path on the voice network between the switches. n1013 STPs are usually deployed in pairs for redundancy purposes. Id. n1014 Any element capable of handling SS7 signaling messages is also generally referred to as a Signaling Point. Each Signaling Point has a unique network address and every SS7 signaling message has a routing label containing addresses for the origination and destination of the message plus a signaling link selection code. Id. n1015 For example, an STP to STP connection is generally used for inter-network interconnection. An STP to switch connection is a common part of the SS7 network and is used to connect end offices to the SS7 network. A connection between a call-related database and a switch is usually done via a connection at an STP (i.e., database to STP to switch). Id. [*36] 457. As mentioned above, the SS7 network also employs signaling links (via STPs) between switches and call-related databases, such as the Line Information Database (LIDB), Toll Free Calling (i.e., 800, 888 number) database, and AIN databases. These links enable a switch to send queries via the SS7 network to call-related databases, which return customer information or instructions for call routing to the switch. n1016 n1016 Switch software commonly referred to as a "trigger" interrupts call progress, in order for the switch to query call-related databases. Id. 458. From the perspective of a switch in a LEC network, the databases discussed above merely supply information or instructions. Updating or populating the information in such databases, however, takes place through a separate process involving different equipment. Carriers input information directly into a service management system (SMS), which in turn downloads such information into the individual databases. 459. The Advanced Intelligent Network (AIN) is a network architecture that uses distributed intelligence in centralized databases to control call processing and manage network information, rather than performing [*37] those functions at every switch. An AIN-capable switch n1017 halts call progress when a resident software "trigger" is activated, and uses the SS7 network to access intelligent databases, known as Service Control Points (SCPs), that contain service software and subscriber information, for instruction on how to route, monitor, or terminate the call. n1018 AIN is being used in the deployment of number portability, wireless roaming, and such advanced services as same number service (i.e., 500 number service) and voice recognition dialing. AIN services are designed and tested in an off-line computer known as a Service Creation Environment (SCE). Once a service is successfully tested, the software is transferred to an SMS that administers and supports SCP databases in the network. The SMS then regularly downloads software and information to an SCP where interaction with the voice network takes place via the signaling links and STPs discussed above. n1017 A switch with AIN capabilities is referred to as a service switching point (SSP). Id. n1018 Switch queries and database responses use a part of the SS7 protocol called the Transaction Capabilities Application Part (TCAP). Id. [*38] b. Comments 460. Almost all parties, including incumbent LECs, support the Commission's tentative conclusion to require incumbent LECs to unbundle access to their signaling systems. n1019 Parties generally agree that access to SS7 network signaling is essential to the provision of competitive local exchange service and that providing such access is technically feasible. n1020 Indeed, most BOCs state that they already provide access to their signaling systems. n1021 BellSouth states that it currently provides such access at its STPs via signaling links to all carriers, including IXCs, independent telephone companies, wireless carriers, and other local exchange carriers. n1022 Commenters also report that independent SS7 network aggregators currently provide access to signaling systems to many independent local exchange and interexchange carriers, and to some competitive local carriers. n1023 In addition, several state commissions note that they already have, or are considering, a requirement that incumbent LECs unbundle access to their signaling systems, including associated databases. n1024 n1019 See, e.g., Ad Hoc Telecommunications Users Committee comments at 24; ACSI comments at 42; ALTS comments at 31; AT&T comments at 23; Comcast comments at 20; Ericsson comments at 5; GCI comments at 12; GST comments at 24; Intermedia comments at 13; MFS comments at 48-49; MCI comments at 32; Sprint comments at 39; Teleport comments at 37; Time Warner comments at 44-45; Ameritech comments at 46-47; BellSouth comments at 43; NYNEX comments at 71; PacTel comments at 57-60; Alabama Commission comments at 18; District of Columbia Commission comments at 23; Florida Commission comments at 17; Mass. Commission comments at 7; New York Commission comments at 27; Wyoming Commission comments at 23. These parties also generally support access to databases associated with signaling. Some parties, however, urge the Commission to weigh the potential harm from access to database and signaling systems, which might give someone the opportunity to cause inadvertent or malicious damage to large parts of the public switched network. Secretary of Defense comments at 6-7; Sprint comments at 39-40; Lincoln Tel. reply at 15; GVNW comments at 20, 29 (screening necessary to prevent network failures from proliferating between interconnected networks). [*39] n1020 See, e.g., Ad Hoc Telecommunications Users Committee comments at 24; ACSI comments at 42; ALTS comments at 31; AT&T comments at 23; Citizens Utilities comments at 15; CompTel comments at 43; Continental comments at 19; Ericsson comments at 5; Frontier comments at 16; GCI comments at 12; LCI comments at 18; MCI comments at 32; NEXTLINK comments at 23; Sprint comments at 39-40; TIA comments at 14; Ameritech comments at 47; Bell Atlantic comments at 27-28; GTE comments at 38-41; U S West comments at 57-58; California Commission comments at 26; Colorado Commission comments at 24; Louisiana Commission comments at 5; Wyoming Commission comments at 23-24; USTN reply at 4. n1021 Ameritech comments at 46-47; Bell Atlantic comments at 27-30; BellSouth comments at 43; GTE comments at 40-41; NYNEX comments at 71; PacTel comments at 58-59; SBC comments at 46-48; Sprint comments at 39-41; USTA comments at 36. n1022 BellSouth comments at 43. n1023 AT&T comments at 23; BellSouth comments at 44-45; NYNEX comments at 71; GVNW comments at 29 (most small incumbent LECs obtain SS7 functionalities from US Intelco or a neighboring large incumbent LEC); GTE comments at 40-41 n.61 (competitors include Independent Telecommunications Network, Southern New England Telephone, and GTE Intelligent Network Services); NYNEX comments at 71; PacTel comments at 58; Bell Atlantic comments at Attachment 3, 16 (independent SS7 providers offer an out-of-band signaling channel which allows the service providers to interconnect with other SS7 networks); USTN reply at 1. Commenters note that these aggregators also provide access to databases associated with signaling. [*40] n1024 See, e.g., California Commission comments at 26 (under consideration by the California Commission); Colorado Commission comments at 24; Louisiana Commission comments at Attachment A; Michigan Commission comments at 12; Texas Commission comments at 19; Wyoming Commission comments at 23-24 (Wyoming Commission has draft rules only); In the Matter of the Commission Investigation Relative to the Establishment of Local Exchange Competition and Other Competitive Issues, Case No. 95-845-TP-COI at 49 (Ohio Commission June 12, 1996) (access to SS7 functionalities, and necessary customer databases such as 911, LIDB, Toll Free Calling, and Directory Assistance). 461. Some incumbent LECs argue that, because there are competitive providers for SS7 network services, there is no need for the Commission to require incumbent LECs to unbundle these network elements for competing carriers. n1025 Most potential competitors counter that access to incumbent LEC SS7 networks will be necessary for some carriers, either because alternative providers of signaling systems and databases will not be available to them or because it will not be technically feasible to use any signaling network other [*41] than the incumbent LEC's SS7 network. n1026 AT&T argues that, even where there are alternative SS7 networks, unbundling of the incumbent's SS7 network will increase competition and help control costs for new entrants. n1027 n1025 See, e.g., Bell Atlantic comments at 27-28; BellSouth comments at 44-45; GTE comments at 40-41 (access is not necessary under section 251(d)(2)(A) to the extent it is proprietary and denial of such access would not impair the provision of competitive services under section 251(d)(2)(B) to the extent it is not proprietary); PacTel comments at 40, 57-60; NYNEX comments at 71 (there are already alternative suppliers of these functions, and as demand grows, more will enter the market). n1026 See AT&T comments at 23; Letter from Frank Simone, Regulatory Division Manager, Federal Government Affairs, AT&T to William Caton, Acting Secretary, FCC, June 13, 1996 (AT&T June 13 Ex Parte). n1027 AT&T comments at 23; accord Telecommunications Resellers Ass'n comments at 36. 462. Some incumbent LECs contend that the 1996 Act only requires them to unbundle access to their signaling systems and databases to the extent necessary to support call routing [*42] and completion for competitors. n1028 Other parties, including IXCs, disagree and contend that access to incumbent LECs' signaling systems under the 1996 Act should include access to all associated databases and use of deployed AIN technology, and that such access is necessary in order for them to compete successfully in the local exchange market. n1029 n1028 ALLTEL comments at 10; Ameritech comments at 46-47; Bell Atlantic comments at 22. n1029 See, e.g., AT&T comments at 23; MCI reply at 30-31. 463. Many parties argue that open access and interconnection to incumbent LECs' SS7 networks and signaling protocols are critical to maintaining the seamless routing and completion of traffic between competing carriers. n1030 Frontier asserts that the use of proprietary or closed protocols by incumbent LECs effectively can prevent interconnected networks from communicating with each other. n1031 Several state commissions have proposed or required that incumbent LECs provide unaltered transmission of signaling information between interconnecting carriers and their customers. n1032 In support of such access, several commenters cite recent interconnection agreements that provide [*43] for the exchange of SS7 signaling messages. n1033 n1030 ACSI comments at 45 (open access is important to support CLASS features and access to databases); Frontier comments at 16; GST comments at 24; MCI comments at 33; New York Commission comments at 27 (signaling systems may represent a bottleneck to efficient exchange of traffic for all LECs); Texas Commission comments at 20; Wyoming Commission comments at 24; USTN reply comments at 2. n1031 Frontier comments at 16 n.31 (such anti-competitive behavior would be contrary to the pro-competitive goals of the 1996 Act); accord Wyoming Commission comments at 24 (incumbent LECs may not claim a proprietary right to signaling protocols). n1032 Wyoming Commission comments at 23-24 (Wyoming Commission draft rules require unaltered transmission of signaling information); Texas Commission comments at 19 (Texas law requires interconnecting carriers to provide nondiscriminatory access to ensure the interoperability of networks and service to end users). n1033 Georgia Commission comments at Attachment E 6-7 (BellSouth and MCIMetro interconnection agreement provides for the exchange of SS7 signaling messages including the Transaction Capabilities Application Part (TCAP) part of the SS7 protocol that supports inter alia CLASS features). [*44] 464. Virtually all parties agree that physical access, or interconnection, to the incumbent LEC's SS7 network should occur at the STP, because it provides essential network management and security functions that are not performed by other SS7 network elements. n1034 Commenters assert that such access at the STP would provide other carriers with access to all of the functions of an incumbent LEC's SS7 network. n1035 A few parties urge the Commission to require incumbent LECs to unbundle direct access to SCP databases. n1036 Most commenters, including all of the incumbent LECs, assert that such access is not technically feasible because SCP databases do not perform the mediation functions present at the STP. n1037 Some incumbent LECs argue that direct access to any SS7 network elements, other than the STP, would require development of additional industry standards before such access could be considered technically feasible. n1038 n1034 See, e.g., Ameritech comments at 48-50; Bell Atlantic comments at 27; MCI comments at 34-35; NYNEX comments at 71; Sprint comments at 40. Part of the STP security function is to screen incoming signaling traffic for unusable messages and to prevent them from reaching the SCP or switch where they could potentially cause reliability and performance problems. GVNW comments at 29; SBC comments at 46; USTA comments at 36. The STP also prevents unauthorized access to proprietary information. GTE comments at 39-40. [*45] n1035 Bell Atlantic comments at 27; GTE comments at 39; USTA comments at 36. See AT&T comments at 24 n.25. n1036 Frontier comments at 16; LCI comments at 18. n1037 See, e.g., ACSI at 45; Bell Atlantic comments at 27-28; Colorado Commission comments at 24 (Colorado Commission requires unbundled access to the SCP via the STP); Comcast comments at 18; GTE comments at 40 (until appropriate mediation techniques and associated software and hardware are developed, access to SCP databases should remain through the STP); PacTel comments at 59; NYNEX comments at 71; SBC comments at 47; Ameritech reply at 20-21 (industry has yet to develop standards for SCP access); AT&T reply at 19-20 n.32; PacTel reply at 21-22. n1038 GTE comments at 40; SBC comments at 47; Sprint comments at 40. 465. Several parties advocate access to unbundled signaling links and STPs. n1039 BellSouth, however, argues that incumbent LECs should only have to provide access to their SS7 network at an STP for competitors. n1040 Parties describe several methods for competing carriers to access unbundled elements of the incumbent LEC's SS7 network. A new entrant could provide or purchase signaling [*46] links to connect its switch to the incumbent LEC's STP, or it could provide its own signaling link and STP and then connect its STP to the incumbent LEC's STP. n1041 SBC adds that a competing carrier could also contract with a third party that has already established signaling link connectivity to the incumbent LEC's STPs. n1042 SBC also notes that it requires certification of new companies before implementing SS7 interconnection in order to protect the integrity of its network. n1043 n1039 ALTS comments at Attachment A, 23; AT&T comments at 23; Cable & Wireless comments at 19, 24-25; Citizens Utilities comments at 15; GCI comments at 12; Frontier comments at 16; Telecommunications Resellers Ass'n comments at 35; NYNEX comments at 71 (provides unbundled access to network signaling resources for call set up and for database queries through unbundled signaling links and ports at its STPs); PacTel reply at 21-22; TIA comments at 14; California Commission comments at 26 (California Commission is considering inter alia, unbundling STPs and signaling links); Colorado Commission comments at 26; Wyoming Commission comments at 23-24 (Wyoming Commission draft rules require unbundling of signaling links, STPs, and SCPs); Iowa Commission comments at Appendix B, 4 (arguing that signaling links and STPs must be unbundled by incumbent LECs). [*47] n1040 BellSouth reply at 23. n1041 SBC comments at 47; Sprint comments at 40 (currently provides access to its SS7 network through "A" signaling links which run from the end office to the STP and through "B" signaling links which connect the STPs of two separate SS7 networks); U S West comments at 48 (competitors should be able to provide their own transport to an STP or purchase transport from the incumbent LEC); PacTel comments at 58 (Pacific Bell proposed, before the California Commission, to unbundle its signaling links that provide interconnection between other carriers' switches or STPs to Pacific Bell's STPs). n1042 SBC comments at 47. n1043 SBC comments at 47. 466. Commenters disagree over what databases qualify as network elements under the 1996 Act. Some parties, including IXCs and other potential local competitors, argue that access to all incumbent LEC databasess should be unbundled as network elements. n1044 This would include both incumbent LEC call processing and non-call processing databases. n1045 Most incumbent LECs counter that administrative or "back office" databases do not fall within the definition of network element in the 1996 [*48] Act. n1046 Incumbent LECs supporting this limited definition also argue that only those databases used for the routing and completion of calls are required to be unbundled by the 1996 Act. n1047 n1044 ACSI comments at 42-44; AT&T comments at 23-26; ALTS comments at 31; MCI comments at 32-33. n1045 ACSI comments at 42-44; ALTS comments at 31; MCI comments at 32-33 (both call processing and non-call processing databases necessary to route, complete and bill simple and complex calls should be unbundled as network elements). n1046 Ameritech comments at 48-51; Bell Atlantic reply at 12-23; GTE reply at 21; Lincoln Tel. reply at 12; NYNEX reply at 34. n1047 Bell Atlantic reply at 12-23; GTE reply at 21; Lincoln Tel. reply at 12; NYNEX reply at 34. 467. A number of parties urge the Commission to require incumbent LECs to provide competing carriers with the same access to their databases that they provide to themselves. n1048 Some potential local competitors argue that access to a number of existing incumbent LEC databases is important if they are to compete effectively with the incumbent LEC. n1049 Many parties, including most incumbent LECs, identify access to [*49] the Line Information Database (LIDB) n1050 and the Toll Free Calling (i.e., 800, 888 numbers) database n1051 as important to the provision of local service. n1052 Some potential local competitors contend that databases are a significant expense and that they will be prohibitively costly to duplicate immediately or in the near future. n1053 The Louisiana Commission notes that it currently requires incumbent LECs to provide competitive providers with access to LIDB, Toll Free Calling, and AIN databases through signaling interconnection such that the functionality, quality, terms and conditions are equal to those the incumbent LEC provides to itself. n1054 Several incumbent LECs respond that they already provide such access to the LIDB and Toll Free Calling databases via their SS7 network. n1055 GVNW argues that all access to call-related databases must be mediated to prevent unauthorized messages from entering an incumbent's database. n1056 n1048 ALTS comments at 31; ACSI comments at 42-43; MCI comments at 32-33; NCTA comments at 42 (competitors' customer information should be included in incumbent LEC databases on the same price, terms, and conditions as the incumbent LEC provides for itself); Teleport comments at 37; Wyoming Commission comments at 23 (nondiscriminatory access for call routing and completion); GCI comments at 13; LCI comments at 18; Vartec comments at 5. [*50] n1049 ACSI comments at 42-43; MCI comments at 32-37. Letter from Leonard Sawicki, MCI Telecommunications to Robert Tanner, Common Carrier Bureau, FCC, July 3, 1996 (MCI July 3 Ex Parte). MCI identifies LIDB, Toll Free Calling, Local Number Portability and Directory Assistance databases as call processing databases necessary for new entrants to offer competitive local telephone service. Id. n1050 Parties described the LIDB as a database containing information as to whether a subscriber number is a valid working line, telephone line type, call screening information and validation information for calling cards. See MCI July 3 Ex Parte. See In the Matter of Local Exchange Carrier Line Information Database, Report and Order, 8 FCC Rcd 7130 (1993). n1051 Toll free calling (i.e., 800, 888 numbers) is a nationwide service generally used to bill the called party. It utilizes a single national SMS and ten regional toll free calling SCP databases. Toll Free Calling SCPs are currently owned by Ameritech, Bell Atlantic, BellSouth, GTE, NYNEX, PacTel, SBC, SNET, Sprint (local), and U S West. The national SMS is owned by Bellcore and operated by a third party administrator. See In the Matter of Toll Free Service Access Codes, Notice of Proposed Rulemaking, 10 FCC Rcd 13692 (1995). [*51] n1052 ACTA comments at 14; ALTS comments at 31; Ameritech comments at 47 (call routing and completion functions sometimes require supplemental calling functions or information such as 800 number routing data or credit verification); GTE comments at 24; U S West comments at 48; Bell Atlantic reply at 12-23; GTE reply at 18; NYNEX reply at 34. n1053 AT&T comments at 23-24; NCTA comments at 42; Telecommunications Resellers Ass'n comments at 36. n1054 Louisiana Commission comments at 5; see Michigan Commission comments at 12 (requires non-discriminatory access to databases necessary for the provision of local exchange service including LIDB and Toll Free Calling databases). n1055 Ameritech comments at 47; BellSouth comments at 43; GTE comments at 40; NYNEX comments at 71; Sprint comments at 40. n1056 GVNW comments at 29; see also MECA comments at 38-39 (competitors should not have direct "on-line" access to incumbent databases). 468. Many potential local competitors argue that access to the incumbent LEC's LIDB should be unbundled. n1057 Most parties agree that query access to the LIDB is technically feasible. n1058 Most potential local competitors [*52] contend that they also need access to the incumbent LECs' administrative database (SMS) that is used to input customer data into the LIDB. n1059 AT&T argues that such access is technically feasible, and can be provided to competitors in the same manner that the incumbent LEC now does for itself. n1060 Other parties propose that the Commission require the incumbent LEC to input a competing carriers' customer information into its LIDB for the competitor. n1061 n1057 ACTA comments at 14; ACSI comments at 42 (access to the LIDB is important to identify presubscribed interexchange carriers); GST comments at 25; ALTS comments at 31. n1058 AT&T comments at 24; ALTS comments at 31; Ameritech comments at 46-51; Bell Atlantic comments at 27-28; GTE comments at 38-41; Louisiana Commission comments at 5; NCTA comments at 42; NYNEX reply at 34; Teleport comments at 37-38; U S West comments 48. n1059 AT&T comments at 25-26; American Network Exchange comments at 5 (requesting access to LIDB, but without the current restrictions imposed by In the Matter of Policies and Rules Concerning Local Exchange Carrier Validation and Billing Information for Joint Use Calling Cards, CC Docket No. 91-115); ACSI comments at 42; Citizens Utilities comments at 15; NCTA comments at 42; Teleport comments at 37. [*53] n1060 AT&T comments at 26. The conditions, (e.g., type of media, electronic information transfer method) applicable to competitor interconnection with such databases should be identical to those the incumbent LEC uses for itself. Id. n1061 Georgia Commission comments at 21 (under BellSouth-MCIMetro interconnection agreement, BellSouth will enter MCIMetro line information into its LIDB so as to enable MCIMetro customers to participate in alternative billing systems, such as collect calling and third number billing). 469. Several parties argue that the Commission should unbundle the Toll Free Calling database for access by competitors. n1062 Most incumbent LECs commented that they already provide query access to their Toll Free Calling databases. n1063 In addition, access to the single national SMS is available under tariff administered by Bellcore. n1064 n1062 ALTS comments at 31; American Network Exchange comments at 5; ACSI comments at 43; Louisiana Commission comments at 5. n1063 GTE comments at 40; Sprint comments at 40; NYNEX reply at 34. Reservation and activation of 800 and 888 numbers is available today as an unbundled tariff offering from many common carriers and independent suppliers through the RESP ORG process. See In the Matter of Toll Free Service Access Codes, Notice of Proposed Rulemaking, 10 FCC Rcd 13692 (1995). [*54] n1064 Access to individual 800 and 888 numbers is achieved through the RESP ORG process administered by Bellcore. Customers contact a RESP ORG (which can be an IXC, LEC, wireless carrier, or a large organization like Westinghouse) which enters subscriber information into the 800 SMS, assigning a number to the subscriber. The SMS than loads the routing information into the SCPs, at which time the number is working and can be utilized by the subscriber. See In the Matter of Toll Free Service Access Codes, Notice of Proposed Rulemaking, 10 FCC Rcd 13692 (1995). 470. Parties also argue that they need equal access to 911 and E911 services, including the underlying Automatic Location Indicator (ALI) database. n1065 Several state commissions have also asserted that such access is necessary for new entrants as well as incumbent LECs. n1066 NCTA asserts that competitors must have access to incumbent LEC systems for 911 and E911 services because currently only incumbent LECs maintain them. n1067 n1065 ACSI comments at 43; ALTS comments at 32; Citizens Utilities comments at 15; Comcast comments at 20; Continental comments at 19; GST comments at 25; MCI comments at 18, 33-34; NCTA comments at 42; Teleport comments at 37. [*55] n1066 Georgia Commission comments at 19; Wyoming Commission comments at 23. n1067 NCTA comments at 42. 471. Some competitive providers urge the Commission to require incumbent LECs to unbundle access to their AIN. n1068 Several parties argue that AIN should be unbundled to allow competitors to access the incumbent LEC's AIN physically at all points that the incumbent does for itself. n1069 Cable & Wireless argues that larger carriers may be able to design and build their own AIN technology, but smaller carriers may not be able to afford to deploy all of the necessary equipment. n1070 MCI argues that access to the incumbent LEC's AIN capabilities would allow them to bring new services to the marketplace and enhance their ability to compete with the incumbent. n1071 Several commenters ask the Commission to adopt the approach of the Louisiana Commission which ordered unbundled access to incumbent LEC databases for all services that the incumbent LEC provides itself, including 800 number, LIDB, and AIN services. n1072 Sprint argues that access to AIN should be unbundled to the extent AIN is used by the incumbent LEC to provide call routing functions. n1073 Many incumbent [*56] LECs respond that AIN is still an evolving technology, and therefore it is not technically feasible for the Commission to require unbundled access. n1074 Some incumbent LECs also argue that AIN is not a signaling system or database, and therefore is not a network element under the Act. n1075 n1068 Ad Hoc Telecommunications Users Committee comments at 24-25; ACTA comments at 18; ACSI at 42; Cable & Wireless comments at 23-25; CompTel comments at 43; GCI comments at 13; MCI comments at 33-34; Cable & Wireless reply at 23-24; USTN reply at 3-4. Letter from Genevieve Morelli, Vice President & general Counsel, CompTel to William Caton, Acting Secretary, FCC, June 14, 1996 (CompTel June 12 Ex Parte); Letter from Linda Oliver, Counsel for WorldCom to William Caton, Acting Secretary, FCC, June 14, 1996 (WorldCom June 14 Ex Parte). n1069 CompTel comments at 43 (competitive providers should be able to interconnect with AIN elements at all points that ILECs interconnect currently); MCI comments at 35. n1070 Cable & Wireless comments at 23 (access to the incumbent LEC's existing AIN platform including the SMS database, signaling links and SCPs will allow new entrants to bring new services to the market efficiently and quickly). [*57] n1071 MCI comments at 35. n1072 ACSI comments at 43; CompTel comments at 43-44; MCI comments at 35 (competitive providers should stand in the same relationship to AIN components as the ILEC does when it offers AIN services to its customers). n1073 Sprint reply at 20 n.27. n1074 BellSouth comments at 44; SBC comments at 44; PacTel reply at 22 (Intelligent Networks docket contains evidence that AIN unbundling is not technically feasible). n1075 Bell Atlantic comments at 29; Ameritech reply at 21 (arguing that because there are no services provided via AIN that are not also provided via the switch, that AIN unbundling is not necessary for competitive providers). 472. A number of parties assert that currently the only technically feasible point of access to the incumbent LEC's AIN is at the incumbent LECs' SCE and SMS. n1076 Several competitive providers contend that access at the SCE and SMS would provide a competing carrier with the same ability to offer AIN-based services as the incumbent LEC without having to recreate initially all of the AIN elements. n1077 Ericsson notes that mere unbundling of databases and signaling elements is not likely to [*58] allow competitors to create and offer competing AIN services unless they have access to both a service creation environment and service management system. n1078 Bell Atlantic asserts that AIN is not a network element within the scope of the 1996 Act, but allows that, if it were, unbundled access to the SMS should meet the requirements of section 251. n1079 BellSouth, however, contends that the Commission should not attempt to declare undefined "software building blocks" to be network elements. n1080 GVNW further argues that such access will require "partitioning" of incumbent LECs' databases to protect each carriers' information. n1081 n1076 Ameritech comments at 49 (Ameritech claims that it has offered to provide database access via its SMS and SCE in the Intelligent Networks proceeding, but also argues that such access is still under development and not yet technically feasible); GTE comments at 42 (record in CC Docket No. 91-346 contains persuasive evidence that, other than access to the SMS, access to AIN network elements is neither technically nor operationally feasible at this time); Sprint comments at 41; Ameritech reply at 15 (agreeing with Sprint's position on SMS access); Bell Atlantic comments at 29-30 (as demonstrated in the Intelligent Networks docket, the only point at which it is technically feasible to provide AIN access is at the Service Management System level); LCI comments at 18-19. [*59] n1077 Ameritech comments at 49 (working on such access for third parties, although Ameritech believes it is not yet technically feasible); Bell Atlantic comments at 29 (access for third parties at the SMS would satisfy the requirements of section 251); Cable & Wireless comments at 24; Ericsson comments at 5-7; Sprint comments at 40 (access at the SMS is the only technically feasible point of interconnection for AIN that maintains network reliability); GVNW comments at 31 (competitor could create its own services in an incumbent LEC's SMS using the incumbent's SCE, which would protect the integrity of the incumbent LEC's AIN platform); LCI comments at 18 (SMS and SCE access are essential for competitors to provide advanced services). n1078 Ericsson comments at 6. n1079 Bell Atlantic comments at 29. n1080 BellSouth comments at 46. n1081 GVNW comments at 31. 473. In our Intelligent Networks docket, several parties, including most incumbent LECs, expressed support for the Commission's proposal to require unbundled access to the SMS by third parties. n1082 Several parties argue that such access is technically feasible. n1083 Most incumbent LECs agree [*60] that, of the potential points of access to AIN proposed in our Intelligent Networks NPRM, access to the SMS poses the least risk of harm to the public switched network. n1084 Many of these commenters argue that access to the SMS would provide competitors with an opportunity to create innovative call processing services. n1085 U S West, however, contends that, since third parties using SMS access would be dependent on incumbent LEC software at the SCE, competitors would not be satisfied with such access because it would not allow them to develop their own proprietary services. n1086 Other parties argue that SMS access will not provide significant benefits to third parties because of the limitations inherent in the service creation parameters established by the LECs. n1087 n1082 See, e.g., BellSouth update comments in CC Docket No. 91-346 at 6; Bell Atlantic comments in CC Docket No. 91-346 at 6; GTE comments in CC Docket No. 91-346 at 21; Central comments in CC Docket No. 91-346 at 12; SNET comments in CC Docket No. 91-346 at 5; NYNEX comments in CC Docket No. 91-346 at 3 n.3, 10-11; Siemens comments in CC Docket No. 91-346 at 2; TIA comments in CC Docket No. 91-346 at 2; MCI comments in CC Docket No. 91-346 at 10; Ericsson reply in CC Docket No. 91-346 at 2-3. [*61] n1083 MCI comments in CC Docket No. 91-346 at 6; Siemens comments in CC Docket No. 91-346 at 2; TIA comments in CC Docket No. 91-346 at 2. n1084 Bell Atlantic comments in CC Docket No. 91-346 at 6-7; BellSouth comments in CC Docket No. 91-346 at 12, 13; GTE comments in CC Docket No. 91-346 at 19, 21; NYNEX comments in CC Docket No. 91-346 at 3; PacTel comments in CC Docket No. 91-346 at 20-21; SBC comments in CC Docket No. 91-346 at 5, 8; U S West comments in CC Docket No. 91-346 at 52; United and Central comments in CC Docket No. 91-346 at 1. n1085 GSA comments in CC Docket No. 91-346 at 3; SNET comments in CC Docket No. 91-346 at 2; Siemens comments in CC Docket No. 91-346 at 2; TIA comments in CC Docket No. 91-346 at 2; MCI in CC Docket No. 91-346 comments at 10; Ericsson reply in CC Docket No. 91-346 at 2-3. n1086 U S West comments in CC Docket No. 91-346 at 53; Ad Hoc Telecommunications Users Committee comments in CC Docket No. 91-346 at 11 (incumbent LECs' ability to mimic third party services created in the incumbent LEC's SCE will diminish the incentive of third parties to create new services that would compete with LEC AIN offerings). n1087 AT&T comments in CC Docket No. 91-346 at 5-11 (competitors would be restricted to the particular LEC's AIN architecture and software platform, preventing the creation and deployment of unique AIN services); ALLNET comments in CC Docket No. 91-346 at 2; Ad Hoc Telecommunications Users Committee comments in CC Docket No. 91-346 at 8-9. [*62] 474. Several parties argue that incumbent LEC SCP databases and AIN triggers in the incumbent LEC switch should be unbundled for a requesting carrier. n1088 Most incumbent LECs argue that sufficient mediation needs to be developed and implemented before any third party interconnection to AIN will be technically feasible. n1089 Some parties, however, counter that there is sufficient screening in the STP and that incumbent LECs should be required to accept AIN signaling messages from competitors' AIN SCP databases without additional mediation. n1090 AT&T argues that the refusal to carry AIN messages prevents competitive carriers from offering the same advanced AIN and CLASS services as the incumbent. n1091 AT&T further contends that mediation will not be necessary, because just as carriers are certified before interconneting with other carriers' SS7 networks, carriers can be certified for AIN. n1092 Some competitors argue that a short transitional period of mediated access could be established to allow time for the adoption of standards to ensure network integrity, but only if incumbent LECs were required to use the same mediated access. n1093 n1088 Ad Hoc Telecommunications Users Committee comments at 17; GCI at 12; Louisiana Commission at 5; LCI comments at 18. [*63] n1089 BellSouth comments at 47. Mediation refers to additional screening software or devices to prevent incorrect or unacceptable AIN messages from reaching the switch or SCP database. Id. n1090 ACTA comments at 21 (mediation devices will increase post dial delay and significantly increase competitors costs); CompTel comments at 45 (since section 251 unbundling is limited to telecommunications carriers, who already adhere to network security and integrity requirements as well as rigorous testing procedures, there is no need for mediation for access to AIN elements). n1091 AT&T reply at 20 (arguing that such a refusal violates the requirement of section 251(c)(2) for interconnection on "just, reasonable and nondiscriminatory" terms). n1092 See Letter in CC Docket No. 91-346 from Bruce Cox, Government Affairs Director, AT&T, to William F. Caton, Acting Secretary, FCC, Aug. 21, 1995 (AT&T Intelligent Networks Proposal) Attachment at 2; but see PacTel reply at 22 (certification would not prevent competitors from sending erroneous messages to an incumbent LEC's AIN SCP which could lead to unauthorized changes in a customer's service or PIC). n1093 Cable & Wireless comments at 25; MCI comments at 36; ACSI comments at 44. [*64] 475. A few parties, including AT&T and MCI, propose unbundling of AIN in order to allow competing carriers to interconnect their own SCP database to the incumbent LECs' AIN so that competing carriers could provide call processing instructions to the incumbent LEC's switch for calls to or from its own customers. n1094 AT&T argues that this would allow it to offer different services to the customer than does the incumbent LEC, which would increase competition in the local exchange market. n1095 Ericsson admits that this is "an attractive concept which might increase competition" but argues that there are numerous technical issues that must be resolved, including billing and service interaction issues. n1096 Incumbent LECs, manufacturers and other parties argue that it is not technically feasible for a competing provider to connect its own alternative call processing database to the incumbent LEC signaling network. n1097 Many parties, including virtually all incumbent LECs, argue against allowing a competing carrier or reseller to connect its own alternative call processing database directly to the incumbent LEC's SS7 network because of the network reliability and security issues it [*65] creates. n1098 These parties warn that requiring such unbundled access to AIN could make an incumbent LEC's switch vulnerable to inappropriate routing and billing instructions from the competitor's SCP. n1099 BellSouth argues that the Intelligent Networks docket supports a finding that this type of AIN unbundling is not technically feasible. n1100 Sprint contends that it could not forecast capacity needs for a competing carrier's alternative database in order to identify its own network capacity requirements. n1101 GVNW adds that any national rule requiring such a form of interconnection would require many small incumbent LECs to make uneconomic upgrades of their switches in order to accommodate it. n1102 n1094 ACTA comments at 21; AT&T comments at 23-25; Cable & Wireless comments at 24; MCI comments at 18, 33 (arguing that such interconnection is supported by the findings of the Information Industry Liaison Committee (IILC) Issue #026 Task Force on Long Term Unbundling); CompTel comments at 44; AT&T reply at 19-20. n1095 AT&T comments at 23-25. AT&T admits that this arrangement would require carriers to agree upon an expanded signaling message set for AIN call processing, but it argues that such messages are already defined by Bellcore and it is the refusal of incumbent LECs' to accept them that prevents its deployment. Id. [*66] n1096 Ericsson comments at 6. n1097 Sprint comments at 41 (there are significant network reliability issues involved with introducing a third party database to an SS7 network); BellSouth comments at 46 (before interconnection of a third-party database to an incumbent LEC's signaling system, more development is still needed for routing, protocol screening, call gapping, resource contention, overload control, feature interaction management and billing concerns for such an arrangement); Ericsson comments at 6 (interconnection of a third-party database to an incumbent LEC's signaling system might promote competition but there are complex technical issues to address before such a scheme could become technically feasible); Teleport comments at 37-38. n1098 BellSouth comments at 45-46 (introduction of a third-party database to an incumbent LEC's signaling system creates the potential for fraud, sabotage, and slamming of the incumbent LEC's customers); SBC comments at 45 (record in CC Docket No. 91-346 is replete with evidence demonstrating the current technical infeasibility of interconnection of third-party databases to an incumbent LEC' signaling system); Sprint comments at 41 (cannot test for system validation and feature interaction); Teleport comments at 37-38; GVNW comments at 30-31 (such interconnection must be mediated to protect both networks from potential harm from incorrect SS7 messages). [*67] n1099 BellSouth comments at 46; Ericsson comments at 6; TCG comments at 37-38; GTE reply at 21-22 (third-party access to AIN triggers not technically feasible without mediation because of network reliability and service integrity issues); Teleport comments at 37-38; but see Cable & Wireless comments at 24 (incumbent LEC arguments concerning network integrity are analogous to AT&T arguments in Carterfone that non-Bell System equipment could cause malfunctions in the network). n1100 BellSouth comments at 45-46 (areas still needing resolution include routing, protocol screening, call gapping, resource contention, overload control, feature interaction management, and billing). See also Letter in CC Docket No. 91-346 from Karen Weis, Division Manager, AT&T, and Ben G. Almond, Executive Director, Federal Regulatory, BellSouth, to William F. Caton, Acting Secretary, FCC, Dec. 14, 1995 (AT&T-BellSouth Intelligent Networks Joint Report). The AT&T-Bell South Intelligent Networks Joint Report detailed the results of their laboratory-to-laboratory test concerning the interconnection of an AT&T SCP to BellSouth's SSP. Id. n1101 Sprint comments at 41. n1102 GVNW comments at 30-31. [*68] 476. Many parties contend that further testing of AIN is needed before further access and interconnection between carriers can be considered technically feasible. n1103 Most of the BOCs support a two year testing plan for the industry to further investigate issues relating to AIN before moving forward to third party interconnection. n1104 Several parties, however, urge the Commission to reject the LECs' proposed Intelligent Networks testing plan, argue that it is not necessary to ensure network integrity and that it is inconsistent with the 1996 Act. n1105 Parties opposed to the LECs' testing plan assert that it is vague and revisits work that has already been done in existing industry fora. n1106 Supporters of the LECs' testing plan, however, counter that they are willing to consider working within existing industry fora. n1107 As described in the Intelligent Networks docket, the LEC testing plan will take place over a two year period with final recommendations to be decided by the participants themselves. Some competitors, while allowing for the need for further testing, advocate imposing a mandatory time limit on the resolution of the outstanding mediation issues for unbundled [*69] access to AIN. n1108 n1103 Bell Atlantic comments at 29 n.10; BellSouth comments at 47; Ericsson comments at 6-7; GTE comments at 42; GVNW comments at 32; Lincoln Tel. comments at 10; SBC comments at 46; U S West comments at 58. n1104 Bell Atlantic comments at 29 n.10; BellSouth comments at 47; GTE comments at 42; Lincoln Tel. comments at 10; SBC comments at 44 (Commission should issue order in CC Docket No. 91-346 that endorses the Tier 1 LECs' joint proposal for an industry IN project); U S West comments at 58 (industry testing plan will lead to development of non-proprietary AIN interfaces). See Letter in CC Docket No. 91-346 from Sandra Wagner, Director, Federal Regulatory, SBC Communications, Inc., to William F. Caton, Acting Secretary, FCC, June 23, 1995 (LEC Intelligent Networks Proposal). Active participants in the LEC Proposal are Bell Atlantic, GTE, PacTel, SBC and U S West. Other incumbent LECs supporting the LEC Proposal, but not currently "active" include BellSouth, Lincoln Tel., SNET, and Sprint. n1105 Cable & Wireless comments at 26; MCI comments at 36-37. See also AT&T update comments in Docket 91-346 at 5-6. n1106 MCI comments at 36-37; but see GTE reply at 22 (testing is necessary and is not intended for delay). [*70] n1107 Letter in CC Docket No. 91-346 from Sandra Wagner, Director, Federal Regulatory, SBC Communications, to William Caton, Acting Secretary, FCC, May 22, 1996 (SBC May 22 Intelligent Networks Ex Parte). SBC contends that the Joint LEC project proposed creating a new forum directly in response to MCI's prior assertions that ATIS sponsored forums were ineffective in addressing interconnection issues. Id. at 4-5. n1108 Cable & Wireless comments at 25; MCI comments at 36 (advocating that the Commission refer outstanding issues from the IILC Issue #026 consensus document to an established forum and that it should monitor progress to ensure implementation of access to the remaining interface points is accomplished within six months of the end of an initial negotiation or arbitration process). 477. Some commenters believe that a Commission order to unbundle AIN functionalities would satisfy the objectives of the Intelligent Networks proceeding. n1109 AT&T asserts that, if unbundled signaling explicitly includes the exchange of AIN signaling messages between incumbent LEC switches and competitor's SCPs, then the Commission does not need to pursue CC Docket No. 91-346 further [*71] because its objectives will be met in this proceeding. n1110 SBC, however, urges the Commission not to merge the Intelligent Networks proceeding into this docket. n1111 n1109 AT&T comments at 25 n.29; Cable & Wireless comments at 26. n1110 SCB comments at 25 n.29. n1111 SBC comments at 46 (arguing that record in CC Docket No. 91-346 is already complete). c. Discussion 478. In the interconnection section above, we conclude that the exchange of signaling information between LECs necessary to exchange traffic and access call related databases was included within the interconnection obligation of section 251(c)(2). n1112 Thus, notwithstanding any obligations under section 251(c)(3), incumbent LECs are required to accept and provide signaling in accordance with the exchange of traffic between interconnecting networks. We conclude that this exchange of signaling information may occur through an STP-to-STP interconnection. n1112 See supra, Section IV. We emphasize, in Section V.J.4.c.(4), such exchange of signaling information does not include the exchange of AIN signaling information between networks for the purpose of providing AIN messages to the incumbent LEC's switch from a competitor's SCP database. [*72] (1) Signaling Links and STP 479. We conclude that incumbent LECs, upon request, must provide nondiscriminatory access to their signaling links and STPs on an unbundled basis. We believe it is technically feasible for incumbent LECs to provide such access, and that such access is critical to entry in the local exchange market. Further, the 1996 Act requires BOCs to provide "nondiscriminatory access to databases and associated signaling necessary for call routing and completion" as a precondition for entry into in-region interLATA services. n1113 Thus, it appears that Congress contemplated the unbundling of signaling systems as network elements. n1113 47 U.S.C. @ 271(c)(2)(B)(x). See also statement of Sen. Pressler, noting that "access to signaling and databases [is] important if you are going to compete and get into the market." 141 Cong. Rec. S8163 (June 12, 1995). 480. We conclude that access to unbundled signaling links and STPs is technically feasible. n1114 The majority of commenters, including incumbent LECs, agree that it is technically feasible to provide unbundled access to signaling links and STPs. n1115 Parties note that incumbent LECs and signaling aggregators [*73] already provide such access. n1116 In addition, several state commissions already require incumbent LECs to provide unbundled elements of SS7 networks. n1117 Because of the screening role played by the STP and associated network reliability concerns that were raised in the record, however, we do not require that incumbent LECs permit requesting carriers to link their own STPs directly to the incumbent's switch or call-related databases. n1118 We take a deliberately conservative approach here because of significant evidence in the record and we note that mere conclusory objections to technical feasibility would not alone be sufficient evidence. n1114 As discussed infra, we conclude that it is not technically feasible to unbundle the SCP from its associated STP, therefore, we do not require incumbent LECs to unbundle those signaling links connecting SCPs to STPs. We emphasize that we take this conservative course here because of the real evidence in the record and note that mere conclusory objections to technical feasibility will not be considered sufficient evidence of such. n1115 See, e.g., AT&T comments at 23; TIA comments at 14; U S West comments at 48; PacTel reply at 21-22. [*74] n1116 See, e.g., BellSouth comments at 43; GVNW comments at 29; NYNEX comments at 71; USTN reply at 1. n1117 See, e.g., Colorado Commission comments at 24; Michigan Commission comments at 12; Texas Commission comments at 19. n1118 See, e.g., Ameritech comments at 50; Bell Atlantic comments at 27; MCI comments at 34-35; Sprint comments at 40. We note, however, that we do not preempt those state commissions that have required incumbent LECs to do so. See Illinois Wholesale Order. 481. Under section 251(d)(2)(A), the Commission must consider whether access to proprietary network elements is necessary. n1119 Commenters did not identify proprietary concerns with signaling protocols for the SS7 network. n1120 Moreover, in general, SS7 signaling networks adhere to Bellcore standards, rather then LEC-specific protocols and provide seamless interconnectivity between networks. n1121 Thus, we conclude that the unbundling of signaling links and STPs does not present proprietary concerns with respect to the incumbent LEC. n1119 47 U.S.C. @ 251(d)(2)(A). n1120 AT&T argues that there are no proprietary information issues because signaling information is generated in the incumbent LEC's switch and is provisioned entirely by the incumbent LEC. AT&T comments at 26. [*75] n1121 A few commenters urge that we prohibit incumbent LECs from taking a proprietary interest in signaling protocols. These parties argue that such a proprietary interest conflicts with the continuing necessity for open access to signaling protocols to maintain the seamless nationwide "network of networks." See Frontier comments at 16 n.31; Wyoming Commission comments at 24. 482. Under section 251(d)(2)(B), the Commission must consider whether "the failure to provide access to such network elements would impair the ability of the telecommunications carrier seeking access to provide the services that it seeks to offer." n1122 Access to signaling systems continues to be a critical element to providing competing local exchange and exchange access service. The vast majority of calls made over incumbent LEC networks are set-up and controlled by separate signaling networks. Incumbent LECs argue that access to signaling systems and associated databases is already available from other providers and therefore, they should not have to unbundle them for access by competitors. n1123 As discussed above, section 251(d)(2)(B) only relieves an incumbent LEC of its unbundling obligation if [*76] other unbundled elements in its network could provide the same service without diminution of quality. Because alternative signaling methods, such as in-band signaling, would provide a lower quality of service, n1124 we conclude that a competitor's ability to provide service would be significantly impaired if it did not have access to incumbent LECs' unbundled signaling links and STPs. n1122 47 U.S.C. @ 251(d)(2)(B). n1123 See, e.g., Bell Atlantic comments at 27-28; BellSouth comments at 44; GTE comments at 40-41; NYNEX comments at 71. n1124 SS7 network signaling is critical in the provision of modern telecommunications services, allowing signaling messages to travel separately from the voice path for individual calls, increasing efficiency and making possible a host of new signaling-based services. AT&T comments at 23. Popular features like Calling Number Identification (Caller ID) and Calling Name Identification, as well as enhanced call set-up functions and such Custom Calling features as Repeat Call and Return Call, would be unavailable without SS7 capabilities. Bell Atlantic comments at Attachment 3, 17. 483. The purchase of unbundled elements of the SS7 [*77] network gives the competitive provider the right to use those elements for signaling between its switches (including unbundled switching elements), between its switches and the incumbent LEC's switches, and between its switches and those third party networks with which the incumbent LEC's SS7 network is interconnected. When a competitive provider purchases unbundled switching from the incumbent LEC, the incumbent LEC must provide nondiscriminatory access to its SS7 network from that switch in the same manner in which it obtains such access itself. Carriers that provide their own switching facilities should be able to access the incumbent LEC's SS7 network for each of their switches via a signaling link between their switch and an incumbent LEC's STP. n1125 Competitive carriers should be able to make this connection in the same manner as an incumbent LEC connects one of its own switches to the STP. This could be accomplished by the incumbent providing an unbundled signaling link from its STP to the competitor's switch or by a competitor bringing a signaling link from its switch to the incumbent LEC's STP. n1125 Competitors should be able to interconnect their own switches to the incumbent LEC's signaling system in any technically feasible manner. Competitors may bring a signaling "A" link from their switch to the incumbent LEC's STP. CAPs use this type of connection today to connect their tandem switches to incumbent LECs' STPs. AT&T comments at 24 n.26. Competitors might also link their switch to their own STP, and then connect to an incumbent LEC's STP via a signaling "D" or "B" link. [*78] (2) Call-Related Databases 484. We conclude that incumbent LECs, upon request, must provide nondiscriminatory access on an unbundled basis to their call-related databases n1126 for the purpose of switch query and database response through the SS7 network. n1127 Thus, for example, we find that it is technically feasible for incumbent LECs to provide access to the Line Information Database (LIDB), the Toll Free Calling Database and Number Portability downstream databases. n1128 The vast majority of parties, including incumbent LECs, agree that it is technically feasible to provide access to the LIDB and the Toll Free Calling databases at an STP linked to the database. n1129 Several state commissions also report that they have ordered incumbent LECs' to provide such access to the LIDB and the Toll Free Calling databases. n1130 We require incumbent LECs to provide this access to their call-related databases by means of physical access at the STP linked to the unbundled database. We find that such access is critical to entry in the local exchange market. n1126 Call-related databases are those SS7 databases used for billing and collection or used in the transmission, routing, or other provision of a telecommunications service. [*79] n1127 Query and response access to a call-related database is intended to require the incumbent LEC only to provide access to its call-related databases as is necessary to permit a competing provider's switch (including the use of unbundled switching) to access the call-related database functions supported by that database. The incumbent LEC may mediate or restrict access to that necessary for the competing provider to provide such services as are supported by the database. n1128 AT&T indicates that for LIDB and 800/888 database queries standard TCAP messages have been established, and reliability, security, provisioning, and billing issues have been addressed. Letter from Karen Weis, Division Manager, AT&T to William Caton, Acting Secretary, FCC, July 16, 1996 (AT&T July 16 Ex Parte). Bell Atlantic states that it currently provides interconnection for LIDB and 800 databases. Bell Atlantic comments at 2. Number portability "downstream databases" are defined in Part 51 of our rules as adopted by this Order. See In the Matter of Telephone Number Portability, First Report and Order and Further Notice of Proposed Rulemaking, CC Docket No. 95-116, FCC 96-286 (rel. July 2, 1996). [*80] n1129 See, e.g., Ameritech comments at 47; AT&T comments at 24; ALTS comments at 31; GTE comments at 40; MCI comments at 34-35; NYNEX comments at 71; U S West comments at 48. n1130 Louisiana Commission comments at 5; Michigan Commission comments at 12; PacTel comments at Appendix A, 7 (California Commission has required such access). 485. We conclude that it is not technically feasible to unbundle the SCP from its associated STP. We note that the overwhelming majority of commenters contend that it is not technically feasible to access call-related databases in a manner other than by connection at the STP directly linked to the call-related database. n1131 Parties argue that the STP is designed to provide mediation and screening functions for the SS7 network that are not performed at the switch or database. n1132 We, therefore, emphasize that access to call-related databases must be provided through interconnection at the STP and that we do not require direct access to call-related databases. n1131 See, e.g., Sprint comments at 40; AT&T reply at 19-20 n.32. n1132 See, e.g., GTE comments at 40; USTA comments at 36. 486. Several commenters also identified [*81] access to call-related databases used in the incumbent's AIN to be critical to fair competition in the local market, n1133 and some state commissions have ordered incumbent LECs to provide access to AIN databases. n1134 We conclude that such access is technically feasible via an STP for those call-related databases used in the incumbent LEC's AIN. n1135 First, of course, when a new entrant purchases an incumbent's local switching element it is technically feasible for the new entrant to use the incumbent's SCP element in the same manner, and via the same signaling links, as the incumbent itself. Thus, we find no technical impediments in the record with regard to such access when a requesting carrier is also purchasing a local switching element associated with the AIN call-related database. n1133 Cable & Wireless comments at 24; Citzens Utilities coments at 15; MCI comments at 32-33; TIA comments at 14; CompTel comments at 43; AT&T comments at 23-26. n1134 Louisiana Commission comments at 5; Wyoming Commission comments at 23-24; see also Illinois Wholesale Order. n1135 AT&T comments at 23-26; CompTel comments at 43; MCI comments at 36; Letter from Wendy Blueming, Regulatory Affairs and Public Policy, SNET to William Caton, Acting Secretary, FCC, July 23, 1996 (SNET July 23 Ex Parte); AT&T July 16 Ex Parte. [*82] 487. Further, we conclude that when a new entrant deploys its own switch, and links it to the incumbent LEC's signaling system, it is technically feasible for the incumbent to provide access to the incumbent's SCP to provide AIN-supported services to customers served by the new entrant's switch. Some SS7 network services resellers currently provide such access. n1136 Other potential local competitors present additional evidence supporting the technical feasibility of such access. n1137 Unlike the situation where a competitor's SCP would control the incumbent's switch (which is discussed below in section V.I.4.c.(4)), in this scenario, the incumbent's SCP will respond to and control the competitor's switch, and potential competitors that have commented in the record do not express network reliability concerns with regard to such control. n1138 Further, like the software resident in a switch, the incumbent LEC's applications resident in an SCP are merely part of the overall software and hardware making up the SCP facility. Thus, carriers purchasing access under either scenario above may use the incumbent's service applications in addition to their own. n1139 n1136 SNET July 23 Ex Parte; Letter from Stephen Kraskin, Illuminet (USTN) to Office of the Secretary, FCC July 23, 1996 (USTN July 23 Ex Parte). [*83] n1137 See AT&T July 16 Ex Parte; see also AT&T comments at 23-26; CompTel comments at 43; MCI comments at 36. n1138 See AT&T July 16 Ex Parte. AT&T asserts that no additional or unique reliability problems would be created that have not already been addressed and resolved by those incumbent LECs who have proposed SMS access for third parties in the Intelligent Networks proceeding. Id. n1139 See infra, Section V.I.4.c.(3) on unbundled access to the incumbent LEC's SCE and SMS. 488. Although we conclude that access to incumbent AIN SCPs is technically feasible, we agree with BellSouth that such access may present the need for mediation mechanisms to, among other things, protect data in incumbent AIN SCPs and ensure against excessive traffic volumes. n1140 In addition, there may be mediation issues a competing carrier will need to address before requesting such access. n1141 Accordingly, if parties are unable to agree to appropriate mediation mechanisms through negotiations, we conclude that during arbitration of such issues the states (or the Commission acting pursuant to section 252(e)(5)) must consider whether such mediation mechanisms will be available and will [*84] adequately protect against intentional or unintentional misuse of the incumbent's AIN facilities. We encourage incumbent LECs and competitive carriers to participate in industry fora and industry testing to resolve outstanding mediation concerns. n1142 Incumbent LECs may establish reasonable certification and testing programs for carriers proposing to access AIN call related databases in a manner similar to those used for SS7 certification. n1143 n1140 Letter from W.W. Jordan, Executive Director - Federal Regulatory, BellSouth to William Caton, Acting Secretary, FCC, July 16, 1996 (BellSouth July 16 Ex Parte) ("With a BellSouth SCP to a ALEC SSP [switch] interconnection arrangement, network reliability and security concerns, from BellSouth's perspective, would largely be limited to issues associated with traffic management."); Letter from James Smith, Director--Federal Relations, Ameritech to William Caton, Acting Secretary, FCC, July 17, 1996 (Ameritech July 17 Ex Parte) ("The volume of queries sent from the CLEC SSP [switch] could overload the LEC SCP, interfering with the operation of the service provided to that CLEC, or with other services which may operate on the LEC's SCP."); Letter from Joseph Mulieri, Director--FCC Relations, Bell Atlantic to Robert S. Tanner, Attorney Advisor, FCC, July 18, 1996 (Bell Atlantic July 18 Ex Parte). BellSouth also raises the need for mediation to prevent unauthorized modification of information within an incumbent LEC's AIN SCP database. BellSouth July 16 Ex Parte. Incumbent LECs' comments in this proceeding and in the IN docket generally focus on the need for mediation to prevent a competitor's database from sending inappropriate AIN signaling information to the incumbent LEC's switch (see infra Section V.I.4.c.(4)). See PacTel comments at 61-62; BellSouth comments at 45-46; Bell Atlantic comments at Appendix 3, 18-19; U S West comments in CC Docket No. 91-346 at 73-74, 84; NYNEX comments in CC Docket No. 91-346 at 14-15; SBC comments in CC Docket No. 91-346 at 8-9. [*85] n1141 Mediation may be necessary for requesting carriers to ensure that inadvertent feature interactions, network management control and customer privacy concerns do not arise from such access. See, e.g., Ameritech July 17 Ex Parte. n1142 See, e.g., Christine Maglott, Information Industry Liaison Committee Wrestles with Mediation Issues, ATIS News, 3, Vol. 11, No.3, May-June, 1996. n1143 SBC notes that carriers proposing to gain access to its SS7 network and gather information from its SCP must be certified and enter into contractual agreements for information access and proper billing. SBC comments at 47-48. 489. We recognize that providing unbundled access to AIN call-related databases at cost, and in particular providing access to the incumbent LEC's software applications that reside in the AIN databases, may reduce the incumbent's incentive to develop new and advanced services using AIN. In the near term, however, requiring entrants to bear the cost of deploying a fully redundant network architecture, including AIN databases and their application software, would constitute a significant barrier to market entry for competitive carriers. As local service markets [*86] develop, however, competition may reduce the incumbent LEC's control over bottleneck facilities and increase the importance of innovation. In those circumstances it is important that incumbent LECs have the incentive to develop unique and innovative services supported by AIN. Therefore at a later date, we will revisit the proper balance between providing unbundled access and maintaining the incentives of incumbent LECs to innovate. 490. Parties generally do not identify proprietary concerns when access to call-related databases is provided via STPs. In general, signaling protocols used to access call-related databases adhere to open Bellcore standards. Parties also do not raise proprietary concerns with specific call-related databases themselves. Today, many separate carriers access incumbent LEC Toll Free Calling and LIDB databases for the proper routing and billing of calls. n1144 Thus, we conclude that, in general, unbundled access to call-related databases does not present proprietary concerns with respect to section 251(d)(2)(A). Incumbent LECs may, however, present such proprietary concerns in the arbitration process with regard to specific databases, and states (or the Commission [*87] acting pursuant to section 252(e)(5)) may take action to limit unnecessary access to proprietary information. n1144 See AT&T July 16 Ex Parte. 491. We also conclude that denying access to call-related databases would impair the ability of a competing provider to offer services such as Alternative Billing Services and AIN-based services. AIN-based services represent the cutting edge of telephone exchange services, and competitors would be at a significant disadvantage if they were forced to develop their own AIN capability immediately. In addition, the record indicates that deployment of call-related databases in the near term would represent a substantial cost to new entrants. As mentioned above, incumbent LECs argue that access to certain call-related databases is already competitively available and therefore they should not have to unbundle access to them. n1145 As discussed above, however, section 251(d)(2)(B) would only relieve an incumbent LEC of its unbundling obligation if other unbundled elements in its network could provide the same service without diminution of quality. Because of the absence of such elements, we conclude that a competitor's ability to provide service [*88] would be significantly impaired if it did not have unbundled access to incumbent LECs' call-related databases, including the LIDB, Toll Free Calling, and AIN databases for the purpose of switch query and database response through the SS7 network. n1145 We note that competitive provision of AIN SCP database services is not evidenced in the record. 492. We also conclude that access to call-related databases as discussed above, and access to the service management system discussed below, must be provided to, and obtained by, requesting carriers in a manner that complies with section 222 of the Act. Section 222, which was effective upon adoption, sets out requirements for privacy of customer information. Section 222(a) provides that all telecommunications carriers have a duty to protect the confidentiality of proprietary information of other carriers, including resellers, equipment manufacturers, and customers. Section 222(b) requires that telecommunications carriers that use proprietary information obtained from another telecommunications carrier in providing any telecommunications service "shall use that information only for such purpose, and shall not use such information for [*89] its own marketing purposes." n1146 Sections 222(c) and (d) provide protection for, and limitations on the use of, and access to, customer proprietary network information (CPNI). n1147 We note that we have initiated a proceeding to clarify the obligations of carriers with regard to section 222(c) and (d). n1148 n1146 47 U.S.C. @ 222(b). n1147 Section 222(f)(1) defines CPNI as "information that relates to the quantity, technical configuration, type, destination, and amount of use of a telecommunications service subscribed to by any customer of a telecommunications carrier, and that is made available to the carrier by the customer solely by virtue of the carrier-customer relationship." 47 U.S.C. @ 222(f)(1)(A). n1148 See Implementation of the Telecommunications Act of 1996: Telecommunications Carriers' Use of Customer Proprietary Network Information and other Customer Information, Notice of Proposed Rulemaking, CC Docket No. 96-115, FCC 96-221 (rel. May 17, 1996). (3) Service Management Systems 493. Finally, we conclude that incumbent LECs should provide access, on an unbundled basis, to the service management systems (SMS), which allow competitors to create, modify, [*90] or update information in call-related databases. We believe it is technically feasible for incumbent LECs to provide access to the SMS in the same manner and method that they provide for their own access. We find that such access is necessary for competitors to effectively use call-related databases, which we have already found to be critical to entry in the local exchange market. 494. Commenters argue that they need equal access to incumbent LECs' SMSs to write or populate their own information in call-related databases. n1149 As discussed above, information bound for many call-related databases is entered first at an off-line SMS, which then downloads the information to the call-related database for real time use on the network. We find that competing provider access to the SMS is technically feasible if it is provided in the same or equivalent manner that the incumbent LEC currently uses to provide such access to itself. n1150 For example, if the incumbent LEC inputs information into the SMS using magnetic tapes, the competitive carrier must be able to create and submit magnetic tapes for the incumbent to input into the SMS in the same way the incumbent inputs its own magnetic [*91] tapes. If the incumbent accesses the SMS through an electronic interface, the competitive carrier should be able to access the SMS through an equivalent electronic interface. n1151 We further conclude that, whatever method is used, the incumbent LEC must provide the competing carrier with the information necessary to correctly enter or format for entry the information relevant for input into the particular incumbent LEC SMS. n1149 AT&T comments at 26; MCI comments at 34-35. n1150 Many carriers currently submit such information to incumbent LECs or third party SMSs. USTN reply at 1-4; Bell Atlantic comments at Attachment 3, 16; GTE comments at 40-41 n.61. n1151 For example, access to the AIN SMS is accomplished through the SCE, which is a computer environment for the design and test of AIN based services. 495. Specifically with respect to AIN, we find that the record in the Intelligent Networks proceeding supports access to the SMS. n1152 A competing carrier seeking access to the SMS that is part of the incumbent LEC's AIN would do so through the incumbent LEC's service creation environment (SCE), an interface used to design, create, and test AIN supported services. [*92] Software successfully tested in the SCE is transferred to the SMS, where it is then downloaded into an SCP database for active deployment on the network. We are persuaded that the risk of harm to the public switched network from such access to the SMS is minimized by the technical safeguards inherent in the SCE and SMS. As described in comments filed in the Intelligent Networks docket, competitors accessing the SCE and SMS would not communicate directly with the LEC's database or switch. n1153 We therefore conclude that such access is technically feasible, and that incumbent LECs should provide requesting carriers with the same access to design, create, test, and deploy AIN-based services at the SMS that the incumbent LEC provides for itself. n1154 While many incumbent LECs express concerns with the technical feasibility of access to AIN, we conclude that those concerns deal primarily with the interconnection of third party AIN SCP databases to the incumbent LEC's AIN and not access to the SCE and SMS. n1155 n1152 See Intelligent Networks, Notice of Proposed Rulemaking, 8 FCC Rcd 6813 (1993). In the Intelligent Networks proceeding, most incumbent LECs supported SMS access. See GTE comments in CC Docket No. 91-346 at 21; United and Central comments in CC Docket No. 91-346 at 12; SNET comments in CC Docket No. 91-346 at 5; NYNEX comments in CC Docket No. 91-346 at 3 n.3, 10-11; BellSouth update comments in CC Docket No. 91-346 at 6; Bell Atlantic comments in CC Docket No. 91-346 at 6. Other parties, including potential competitors and manufacturers, also supported SMS access. See Siemens comments in CC Docket No. 91-346 at 2; TIA comments in CC Docket No. 91-346 at 2; MCI comments in CC Docket No. 91-346 at 10; Ericsson reply in CC Docket No. 91-346 at 2-3. Many commenters asserted that SMS access through the SCE would provide a valuable opportunity for third parties to create services. See GSA comments in CC Docket No. 91-346 at 3; SNET comments in CC Docket No. 91-346 at 2; Siemens comments in CC Docket No.91-346 at 2; Ericsson reply in CC Docket No. 91-346 at 2-3; TIA comments in CC Docket No. 91-346 at 2; MCI comments in CC Docket No. 91-346 at 10. [*93] n1153 In their comments, BellSouth and Bell Atlantic describe the way they provide or plan to provide access to the SMS for third parties. Bell Atlantic proposes to first develop and deploy AIN services based on customer request and then subsequently to allow third parties themselves to create AIN services at a terminal either in a Bell Atlantic office or a third party office. Bell Atlantic comments in CC Docket No. 91-346 at 6. BellSouth proposes to permit third parties to use the service logic resident on BellSouth's service creation environment to create AIN services. BellSouth update reply in CC Docket No. 91-346 at 10. n1154 Incumbent LECs that have deployed AIN must provide such access to competing carriers that will allow them to develop call processing applications pursuant to the same parameters the incumbent LEC uses itself, such as the time-of-day and origination of call parameters. BellSouth's recently proposed service to provide access to its SCE and SMS appears to be an example of the type of access to the SMS that incumbent LECs must provide to competitors upon request. Pleading Cycle Established for Comments on BellSouth Telecommunications, Inc.'s Petition for Expedited Waiver of Part 69 Rules, Public Notice, DA 96-27 (Jan. 17, 1996) (BellSouth Part 69 Waiver Petition). [*94] n1155 Of the three potential points of access to AIN proposed in the Intelligent Networks NPRM, LEC commenters generally agree that SMS access poses the least risk of harm to the public switched telephone network. See Bell Atlantic comments in CC Docket No. 91-346 at 6-7; BellSouth comments in CC Docket No. 91-346 at 12, 13; GTE comments in CC Docket No. 91-346 at 19, 21; NYNEX comments in CC Docket No. 91-346 at 3; PacTel comments in CC Docket No. 91-346 at 20-21; SBC comments in CC Docket No. 91-346 at 5, 8; U S West comments in CC Docket No. 91-346 at 52; United and Central comments in CC Docket No. 91-346 at 1. Competitors also support such access. See MCI Comments at 6; Siemens Comments at 2; TIA Comments at 2. 496. We recognize that, although technically feasible, providing nondiscriminatory access to the SMS and SCE for the creation and deployment of AIN services may require some modifications, including appropriate mediation, to accommodate such access by requesting carriers. We note that BellSouth is currently prepared to tariff and offer such access to third parties, and other incumbent LECs, including Bell Atlantic and Ameritech, indicate that they have made significant [*95] progress towards implementing such access. n1156 Therefore, if parties are unable to agree to appropriate mediation mechanisms through negotiations, we conclude that during arbitration of such issues the states (or the Commission acting pursuant to section 252(e)(5)) must consider whether such mediation mechanisms will be available and will adequately protect against intentional or unintentional misuses of the incumbent's AIN facilities. We again encourage incumbent LECs and competitive carriers to participate in industry fora and industry testing to resolve outstanding mediation concerns. n1156 BellSouth Part 69 Waiver Petition. BellSouth proposes to tariff services that permit third parties to create and administer AIN services through access to the SCE and SMS. BellSouth's SCE/SMS service will support third-party service development with the following AIN triggers: off-hook immediate, off-hook delay, public office dialing plan, customized dialing plan, feature code and terminating attempt triggers. Id. See Bell Atlantic comments in CC Docket No. 91-346 at 6, 8; Ameritech July 17 Ex Parte. 497. Parties did identify some proprietary concerns regarding access to the SCE and [*96] SMS used in the incumbent LEC's AIN. Some incumbent LECs contend that the interface used at the SCE is proprietary in nature. n1157 GVNW argues that specific AIN-based services designed by carriers should be proprietary in nature. n1158 Competitors correctly argue that AIN can be used, not only for telecommunication services traditionally supported by the switch, but as a means to deploy advanced services not otherwise possible. n1159 We find that competing providers without access to AIN would be at a significant disadvantage to incumbent LECs, because they could not necessarily offer the same services to the customer. This access will help competing providers without imposing costs on incumbent LECs because the entrants will pay the cost. n1160 We therefore conclude, under section 251(d)(2)(A), that access to AIN, including those elements that may be proprietary, is necessary for successful entry into the local service market. n1157 U S West comments at 58 n.124 (for example, BellSouth uses DESIGNedge for such access which utilizes a proprietary database technology tailored to its network); Bell Atlantic comments at 28-29. n1158 GVNW comments at 30 (incumbent LECs should be able to copyright AIN based services that they create or incumbents will have much less incentive to develop such services). [*97] n1159 AT&T comments at 23-25; Cable & Wireless comments at 24; MCI comments at 18, 33. n1160 See supra, Section VII. 498. Most parties generally did not identify proprietary concerns with access to those SMSs used other than for AIN. Some parties, however, argue that there are proprietary interfaces used to enter information into various databases. n1161 Competing carriers counter that competitive providers would not need to have direct access to the proprietary methods of data entry used by incumbent LECs, and as a result we conclude that the unbundled access to SMSs used for other than AIN does not present proprietary concerns with respect to section 251(d)(2)(A). n1162 n1161 AT&T June 13 Ex Parte. n1162 AT&T comments at 26. 499. We also conclude that unbundled access to all SMSs is necessary for a competing provider to effectively use unbundled call-related databases. We find that the inability of competing carriers to use the SMS in the same manner that an incumbent LEC uses to input data itself would impair the ability of a competing carrier to effectively offer services to its customers using unbundled call-related databases. Commenters in the record [*98] point out that access to call-related databases alone would not allow the competing carrier to provide such services to its customers without access to an SMS. n1163 We also conclude that AIN-based services are important to a new entrant's ability to compete effectively for customers with the incumbent LEC, and in developing new business by introducing new AIN based services. Thus we conclude that a competitor's ability to provide service would be significantly impaired if it did not have unbundled access to an incumbent LEC's SMS, including access to the SMS(s) used to input data to the LIDB, Toll Free Calling, Number Portability and AIN call-related databases. n1163 Ericsson comments at 6. 500. We reject the contention by several incumbent LECs that signaling and database access was meant by the 1996 Act to apply only to such access as is necessary for call routing and completion. Although the competitive checklist for BOC entry into in-region interLATA services under section 271 requires "nondiscriminatory access to databases and associated signaling necessary for call routing and completion" n1164 the definition of a network element is more comprehensive in scope. A network [*99] element as defined by the 1996 Act includes "databases" and in particular "databases sufficient for billing and collection or used in the transmission, routing, or other provision of a telecommunications service." n1165 We find that the inclusion of "other provision of a telecommunications service" meant Congress intended the unbundling of databases to be read broadly and could include databases beyond those directly used in the transmission or routing of a telecommunications service. n1164 47 U.S.C. @ 271(c)(2)(B)(x). n1165 47 U.S.C. @ 153(29). (4) Third Party Call-Related Databases 501. We find that there is not enough evidence in the record to make a determination as to the technical feasibility of interconnection of third party call-related databases to the incumbent LEC's signaling system. Some parties argue that such interconnection, including the interconnection of third party AIN SCP databases, would allow them to provide more efficient or advanced call processing and services to customers, thereby increasing their ability to compete with the incumbent LEC. n1166 AT&T and MCI specifically argue that it would be technically feasible for them to interconnect [*100] their AIN SCP database to an incumbent LEC's AIN for the purpose of providing call processing instructions to the incumbent LEC's switch. n1167 Incumbent LECs contend that such interconnection would leave their switch vulnerable to a multitude of potential harms because sufficient mediation for such interconnection does not currently exist at the STP or SCP and has not yet been developed. n1168 AT&T counters that there is no need for additional mediation and that sufficient certification and testing of AIN based services before deployment in such a fashion is technically feasible. n1169 n1166 AT&T comments at 23-25; Cable & Wireless comments at 24; MCI comments at 18, 33. n1167 AT&T comments at 23-25; MCI comments at 18, 33. n1168 See U S West comments in CC Docket No. 91-346 at 73-74, 84; NYNEX comments in CC Docket No. 91-346 at 14-15; SBC comments in CC Docket No. 91-346 at 8-9. n1169 See AT&T Intelligent Networks Proposal Attachment at 2. 502. At this time, in view of this record and the record compiled in the Intelligent Networks docket, we cannot make a determination of the technical feasibility of such interconnection. We do, however, believe that [*101] state commissions could find such an arrangement to be technically feasible and we do not intend to preempt such an order through these rules. The Illinois Comm