[Code of Federal Regulations]
[Title 47, Volume 3]
[Revised as of October 1, 2008]
From the U.S. Government Printing Office via GPO Access
[CITE: 47CFR51.5]

[Page 17-22]
 
                       TITLE 47--TELECOMMUNICATION
 
        CHAPTER I--FEDERAL COMMUNICATIONS COMMISSION (CONTINUED)
 
PART 51_INTERCONNECTION--Table of Contents
 
                      Subpart A_General Information
 
Sec. 51.5  Terms and definitions.

    Terms used in this part have the following meanings:
    Act. The Communications Act of 1934, as amended.
    Advanced intelligent network. Advanced intelligent network is a 
telecommunications network architecture in which call processing, call 
routing, and network management are provided by means of centralized 
databases located at points in an incumbent local exchange carrier's 
network.
    Advanced services. The term ``advanced services'' is defined as high 
speed, switched, broadband, wireline telecommunications capability that 
enables users to originate and receive high-quality voice, data, 
graphics or video telecommunications using any technology.
    Arbitration, final offer. Final offer arbitration is a procedure 
under which each party submits a final offer concerning the issues 
subject to arbitration, and the arbitrator selects, without 
modification, one of the final offers by the parties to the arbitration 
or portions of both such offers. ``Entire package final offer 
arbitration,'' is a procedure under which the arbitrator must select, 
without modification, the entire proposal submitted by one of the 
parties to the arbitration. ``Issue-by-issue final offer arbitration,'' 
is a procedure under which the arbitrator must select, without 
modification, on an issue-by-issue basis, one of the proposals submitted 
by the parties to the arbitration.
    Billing. Billing involves the provision of appropriate usage data by 
one telecommunications carrier to another to facilitate customer billing 
with attendant acknowledgements and status reports. It also involves the 
exchange of information between telecommunications carriers to process 
claims and adjustments.
    Binder or binder group. Copper pairs bundled together, generally in 
groups of 25, 50 or 100.
    Business line. A business line is an incumbent LEC-owned switched 
access line used to serve a business customer, whether by the incumbent 
LEC itself or by a competitive LEC that leases the line from the 
incumbent LEC. The number of business lines in a wire center shall equal 
the sum of all incumbent LEC business switched access lines, plus the 
sum of all UNE loops connected to that wire center, including UNE loops 
provisioned in combination with other unbundled elements. Among these 
requirements, business line tallies:
    (1) Shall include only those access lines connecting end-user 
customers with incumbent LEC end-offices for switched services,
    (2) Shall not include non-switched special access lines,
    (3) Shall account for ISDN and other digital access lines by 
counting each 64 kbps-equivalent as one line. For example, a DS1 line 
corresponds to 24 64 kbps-equivalents, and therefore to 24 ``business 
lines.''
    Commercial Mobile Radio Service (CMRS). CMRS has the same meaning as 
that term is defined in Sec. 20.3 of this chapter.
    Commingling. Commingling means the connecting, attaching, or 
otherwise linking of an unbundled network element, or a combination of 
unbundled network elements, to one or more facilities or services that a 
requesting telecommunications carrier has obtained at wholesale from an 
incumbent LEC, or the combining of an unbundled network element, or a 
combination of unbundled network elements, with one or more such 
facilities or services. Commingle means the act of commingling.

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    Commission. Commission refers to the Federal Communications 
Commission.
    Day. Day means calendar day.
    Dialing parity. The term dialing parity means that a person that is 
not an affiliate of a local exchange carrier is able to provide 
telecommunications services in such a manner that customers have the 
ability to route automatically, without the use of any access code, 
their telecommunications to the telecommunications service provider of 
the customer's designation from among 2 or more telecommunications 
service providers (including such local exchange carrier).
    Directory assistance service. Directory assistance service includes, 
but is not limited to, making available to customers, upon request, 
information contained in directory listings.
    Directory listings. Directory listings are any information:
    (1) Identifying the listed names of subscribers of a 
telecommunications carrier and such subscriber's telephone numbers, 
addresses, or primary advertising classifications (as such 
classifications are assigned at the time of the establishment of such 
service), or any combination of such listed names, numbers, addresses or 
classifications; and
    (2) That the telecommunications carrier or an affiliate has 
published, caused to be published, or accepted for publication in any 
directory format.
    Downstream database. A downstream database is a database owned and 
operated by an individual carrier for the purpose of providing number 
portability in conjunction with other functions and services.
    Enhanced extended link. An enhanced extended link or EEL consists of 
a combination of an unbundled loop and unbundled dedicated transport, 
together with any facilities, equipment, or functions necessary to 
combine those network elements.
    Equipment necessary for interconnection or access to unbundled 
network elements. For purposes of section 251(c)(2) of the Act, the 
equipment used to interconnect with an incumbent local exchange 
carrier's network for the transmission and routing of telephone exchange 
service, exchange access service, or both. For the purposes of section 
251(c)(3) of the Act, the equipment used to gain access to an incumbent 
local exchange carrier's unbundled network elements for the provision of 
a telecommunications service.
    Fiber-based collocator. A fiber-based collocator is any carrier, 
unaffiliated with the incumbent LEC, that maintains a collocation 
arrangement in an incumbent LEC wire center, with active electrical 
power supply, and operates a fiber-optic cable or comparable 
transmission facility that
    (1) Terminates at a collocation arrangement within the wire center;
    (2) Leaves the incumbent LEC wire center premises; and
    (3) Is owned by a party other than the incumbent LEC or any 
affiliate of the incumbent LEC, except as set forth in this paragraph. 
Dark fiber obtained from an incumbent LEC on an indefeasible right of 
use basis shall be treated as non-incumbent LEC fiber-optic cable. Two 
or more affiliated fiber-based collocators in a single wire center shall 
collectively be counted as a single fiber-based collocator. For purposes 
of this paragraph, the term affiliate is defined by 47 U.S.C. 153(1) and 
any relevant interpretation in this Title.
    Incumbent Local Exchange Carrier (Incumbent LEC). With respect to an 
area, the local exchange carrier that:
    (1) On February 8, 1996, provided telephone exchange service in such 
area; and
    (2)(i) On February 8, 1996, was deemed to be a member of the 
exchange carrier association pursuant to Sec. 69.601(b) of this 
chapter; or
    (ii) Is a person or entity that, on or after February 8, 1996, 
became a successor or assign of a member described in paragraph (2)(i) 
of this section.
    Information services. The term information services means the 
offering of a capability for generating, acquiring, storing, 
transforming, processing, retrieving, utilizing, or making available 
information via telecommunications, and includes electronic publishing, 
but does not include any use of any such capability for the management, 
control, or operation of a telecommunications system or the management 
of a telecommunications service.

[[Page 19]]

    Interconnection. Interconnection is the linking of two networks for 
the mutual exchange of traffic. This term does not include the transport 
and termination of traffic.
    Known disturber. An advanced services technology that is prone to 
cause significant interference with other services deployed in the 
network.
    Intermodal. The term intermodal refers to facilities or technologies 
other than those found in traditional telephone networks, but that are 
utilized to provide competing services. Intermodal facilities or 
technologies include, but are not limited to, traditional or new cable 
plant, wireless technologies, and power line technologies.
    Local Access and Transport Area (LATA). A Local Access and Transport 
Area is a contiguous geographic area--
    (1) Established before February 8, 1996 by a Bell operating company 
such that no exchange area includes points within more than 1 
metropolitan statistical area, consolidated metropolitan statistical 
area, or State, except as expressly permitted under the AT&T Consent 
Decree; or
    (2) Established or modified by a Bell operating company after 
February 8, 1996 and approved by the Commission.
    Local Exchange Carrier (LEC). A LEC is any person that is engaged in 
the provision of telephone exchange service or exchange access. Such 
term does not include a person insofar as such person is engaged in the 
provision of a commercial mobile service under section 332(c) of the 
Act, except to the extent that the Commission finds that such service 
should be included in the definition of the such term.
    Maintenance and repair. Maintenance and repair involves the exchange 
of information between telecommunications carriers where one initiates a 
request for maintenance or repair of existing products and services or 
unbundled network elements or combination thereof from the other with 
attendant acknowledgements and status reports.
    Meet point. A meet point is a point of interconnection between two 
networks, designated by two telecommunications carriers, at which one 
carrier's responsibility for service begins and the other carrier's 
responsibility ends.
    Meet point interconnection arrangement. A meet point interconnection 
arrangement is an arrangement by which each telecommunications carrier 
builds and maintains its network to a meet point.
    Mobile wireless service. A mobile wireless service is any mobile 
wireless telecommunications service, including any commercial mobile 
radio service.
    Multi-functional equipment. Multi-functional equipment is equipment 
that combines one or more functions that are necessary for 
interconnection or access to unbundled network elements with one or more 
functions that would not meet that standard as stand-alone functions.
    Network element. A network element is a facility or equipment used 
in the provision of a telecommunications service. Such term also 
includes, but is not limited to, features, functions, and capabilities 
that are provided by means of such facility or equipment, including but 
not limited to, subscriber numbers, databases, signaling systems, and 
information sufficient for billing and collection or used in the 
transmission, routing, or other provision of a telecommunications 
service.
    Operator services. Operator services are any automatic or live 
assistance to a consumer to arrange for billing or completion of a 
telephone call. Such services include, but are not limited to, busy line 
verification, emergency interrupt, and operator-assisted directory 
assistance services.
    Physical collocation. Physical collocation is an offering by an 
incumbent LEC that enables a requesting telecommunications carrier to:
    (1) Place its own equipment to be used for interconnection or access 
to unbundled network elements within or upon an incumbent LEC's 
premises;
    (2) Use such equipment to interconnect with an incumbent LEC's 
network facilities for the transmission and routing of telephone 
exchange service, exchange access service, or both, or to gain access to 
an incumbent LEC's unbundled network elements for the provision of a 
telecommunications service;

[[Page 20]]

    (3) Enter those premises, subject to reasonable terms and 
conditions, to install, maintain, and repair equipment necessary for 
interconnection or access to unbundled elements; and
    (4) Obtain reasonable amounts of space in an incumbent LEC's 
premises, as provided in this part, for the equipment necessary for 
interconnection or access to unbundled elements, allocated on a first-
come, first-served basis.
    Premises. Premises refers to an incumbent LEC's central offices and 
serving wire centers; all buildings or similar structures owned, leased, 
or otherwise controlled by an incumbent LEC that house its network 
facilities; all structures that house incumbent LEC facilities on public 
rights-of-way, including but not limited to vaults containing loop 
concentrators or similar structures; and all land owned, leased, or 
otherwise controlled by an incumbent LEC that is adjacent to these 
central offices, wire centers, buildings, and structures.
    Pre-ordering and ordering. Pre-ordering and ordering includes the 
exchange of information between telecommunications carriers about: 
current or proposed customer products and services; or unbundled network 
elements, or some combination thereof. This information includes loop 
qualification information, such as the composition of the loop material, 
including but not limited to: fiber optics or copper; the existence, 
location and type of any electronic or other equipment on the loop, 
including but not limited to, digital loop carrier or other remote 
concentration devices, feeder/distribution interfaces, bridge taps, load 
coils, pair-gain devices, disturbers in the same or adjacent binder 
groups; the loop length, including the length and location of each type 
of transmission media; the wire gauge(s) of the loop; and the electrical 
parameters of the loop, which may determine the suitability of the loop 
for various technologies.
    Provisioning. Provisioning involves the exchange of information 
between telecommunications carriers where one executes a request for a 
set of products and services or unbundled network elements or 
combination thereof from the other with attendant acknowledgements and 
status reports.
    Rural telephone company. A rural telephone company is a LEC 
operating entity to the extent that such entity:
    (1) Provides common carrier service to any local exchange carrier 
study area that does not include either:
    (i) Any incorporated place of 10,000 inhabitants or more, or any 
part thereof, based on the most recently available population statistics 
of the Bureau of the Census; or
    (ii) Any territory, incorporated or unincorporated, included in an 
urbanized area, as defined by the Bureau of the Census as of August 10, 
1993;
    (2) Provides telephone exchange service, including exchange access, 
to fewer than 50,000 access lines;
    (3) Provides telephone exchange service to any local exchange 
carrier study area with fewer than 100,000 access lines; or
    (4) Has less than 15 percent of its access lines in communities of 
more than 50,000 on February 8, 1996.
    Service control point. A service control point is a computer 
database in the public switched network which contains information and 
call processing instructions needed to process and complete a telephone 
call.
    Service creation environment. A service creation environment is a 
computer containing generic call processing software that can be 
programmed to create new advanced intelligent network call processing 
services.
    Service provider. A service provider is a provider of 
telecommunications services or a provider of information services.
    Signal transfer point. A signal transfer point is a packet switch 
that acts as a routing hub for a signaling network and transfers 
messages between various points in and among signaling networks.
    State. The term state includes the District of Columbia and the 
Territories and possessions.
    State commission. A state commission means the commission, board, or 
official (by whatever name designated) which under the laws of any state 
has regulatory jurisdiction with respect to intrastate operations of 
carriers. As referenced in this part, this term may

[[Page 21]]

include the Commission if it assumes responsibility for a proceeding or 
matter, pursuant to section 252(e)(5) of the Act or Sec. 51.320. This 
term shall also include any person or persons to whom the state 
commission has delegated its authority under sections 251 and 252 of the 
Act and this part.
    State proceeding. A state proceeding is any administrative 
proceeding in which a state commission may approve or prescribe rates, 
terms, and conditions including, but not limited to, compulsory 
arbitration pursuant to section 252(b) of the Act, review of a Bell 
operating company statement of generally available terms pursuant to 
section 252(f) of the Act, and a proceeding to determine whether to 
approve or reject an agreement adopted by arbitration pursuant to 
section 252(e) of the Act.
    Technically feasible. Interconnection, access to unbundled network 
elements, collocation, and other methods of achieving interconnection or 
access to unbundled network elements at a point in the network shall be 
deemed technically feasible absent technical or operational concerns 
that prevent the fulfillment of a request by a telecommunications 
carrier for such interconnection, access, or methods. A determination of 
technical feasibility does not include consideration of economic, 
accounting, billing, space, or site concerns, except that space and site 
concerns may be considered in circumstances where there is no 
possibility of expanding the space available. The fact that an incumbent 
LEC must modify its facilities or equipment to respond to such request 
does not determine whether satisfying such request is technically 
feasible. An incumbent LEC that claims that it cannot satisfy such 
request because of adverse network reliability impacts must prove to the 
state commission by clear and convincing evidence that such 
interconnection, access, or methods would result in specific and 
significant adverse network reliability impacts.
    Telecommunications carrier. A telecommunications carrier is any 
provider of telecommunications services, except that such term does not 
include aggregators of telecommunications services (as defined in 
section 226 of the Act). A telecommunications carrier shall be treated 
as a common carrier under the Act only to the extent that it is engaged 
in providing telecommunications services, except that the Commission 
shall determine whether the provision of fixed and mobile satellite 
service shall be treated as common carriage. This definition includes 
CMRS providers, interexchange carriers (IXCs) and, to the extent they 
are acting as telecommunications carriers, companies that provide both 
telecommunications and information services. Private Mobile Radio 
Service providers are telecommunications carriers to the extent they 
provide domestic or international telecommunications for a fee directly 
to the public.
    Telecommunications service. The term telecommunications service 
refers to the offering of telecommunications for a fee directly to the 
public, or to such classes of users as to be effectively available 
directly to the public, regardless of the facilities used.
    Telephone exchange service. A telephone exchange service is:
    (1) A service within a telephone exchange, or within a connected 
system of telephone exchanges within the same exchange area operated to 
furnish to subscribers intercommunicating service of the character 
ordinarily furnished by a single exchange, and which is covered by the 
exchange service charge, or
    (2) A comparable service provided through a system of switches, 
transmission equipment, or other facilities (or combination thereof) by 
which a subscriber can originate and terminate a telecommunications 
service.
    Telephone toll service. The term telephone toll service refers to 
telephone service between stations in different exchange areas for which 
there is made a separate charge not included in contracts with 
subscribers for exchange service.
    Unreasonable dialing delay. For the same type of calls, dialing 
delay is ``unreasonable'' when the dialing delay experienced by the 
customer of a competing provider is greater than that experienced by a 
customer of the LEC providing dialing parity, or nondiscriminatory 
access to operator services or directory assistance.

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    Triennial Review Order. The Triennial Review Order means the 
Commission's Report and Order and Order on Remand and Further Notice of 
Proposed Rulemaking in CC Docket Nos. 01-338, 96-98, and 98-147.
    Triennial Review Remand Order. The Triennial Review Remand Order is 
the Commission's Order on Remand in CC Docket Nos. 01-338 and 04-313 
(released February 4, 2005).
    Virtual collocation. Virtual collocation is an offering by an 
incumbent LEC that enables a requesting telecommunications carrier to:
    (1) Designate or specify equipment to be used for interconnection or 
access to unbundled network elements to be located within or upon an 
incumbent LEC's premises, and dedicated to such telecommunications 
carrier's use;
    (2) Use such equipment to interconnect with an incumbent LEC's 
network facilities for the transmission and routing of telephone 
exchange service, exchange access service, or both, or for access to an 
incumbent LEC's unbundled network elements for the provision of a 
telecommunications service; and
    (3) Electronically monitor and control its communications channels 
terminating in such equipment.
    Wire center. A wire center is the location of an incumbent LEC local 
switching facility containing one or more central offices, as defined in 
the Appendix to part 36 of this chapter. The wire center boundaries 
define the area in which all customers served by a given wire center are 
located.

[61 FR 45619, Aug. 29, 1996, as amended at 61 FR 47348, Sept. 6, 1996; 
64 FR 23241, Apr. 30, 1999; 65 FR 1344, Jan. 10, 2000; 65 FR 2550, Jan. 
18, 2000; 65 FR 54438, Sept. 8, 2000; 66 FR 43521, Aug. 20, 2001; 68 FR 
52293, Sept. 2, 2003; 70 FR 8952, Feb. 24, 2005]