§ 52.20 47 CFR Ch. I (10–1–09 Edition)

§ 52.20 Thousands-block number pool- forth in the Appendix to this part, as ing. well as those areas identified as one of (a) Definition. Thousands-block num- the largest 100 MSAs on subsequent up- ber pooling is a process by which the dates to the U.S. Census reports. 10,000 numbers in a central office code (b) The term broadband PCS has the (NXX) are separated into ten sequen- same meaning as that term is defined tial blocks of 1,000 numbers each (thou- in § 24.5 of this chapter. sands-blocks), and allocated separately (c) The term cellular service has the within a . same meaning as that term is defined (b) General requirements. Pursuant to in § 22.99 of this chapter. the Commission’s adoption of thou- (d) The term covered CMRS means sands-block number pooling as a man- broadband PCS, cellular, and 800/900 datory nationwide numbering resource MHz SMR licensees that hold geo- optimization strategy, all carriers, ex- graphic area licenses or are incumbent cept those exempted by the Commis- SMR wide area licensees, and offer sion, must participate in thousands- real-time, two-way switched voice block number pooling where it is im- service, are interconnected with the plemented and in accordance with the public switched network, and utilize an national thousands-block number pool- in-network switching facility that en- ing framework and implementation ables such CMRS systems to reuse fre- schedule established by the Commis- quencies and accomplish seamless sion. hand-offs of subscriber calls. (c) Donation of thousands-blocks. (1) (e) The term database method means a All service providers required to par- number portability method that uti- ticipate in thousands-block number lizes one or more external databases pooling shall donate thousands-blocks for providing called party routing in- with ten percent or less contamination formation. to the thousands-block number pool for (f) The term downstream database the rate center within which the num- means a database owned and operated bering resources are assigned. by an individual carrier for the purpose (2) All service providers required to of providing number portability in con- participate in thousands-block number junction with other functions and serv- pooling shall be allowed to retain at ices. least one thousands-block per rate cen- (g) The term incumbent wide area SMR ter, even if the thousands-block is ten licensee has the same meaning as that percent or less contaminated, as an ini- term is defined in § 20.3 of this chapter. tial block or footprint block. (h) The term ‘‘interconnected VoIP (d) Thousands-Block Pooling Adminis- provider’’ is an entity that provides trator. (1) The Pooling Administrator interconnected VoIP service as that shall be a non-governmental entity term is defined in 47 CFR 9.3. that is impartial and not aligned with (i) The term IP Relay provider means any particular in- an entity that provides IP Relay as de- dustry segment, and shall comply with fined by 47 CFR 64.601. the same neutrality requirements that (j) The term local exchange carrier the NANPA is subject to under this means any person that is engaged in part. the provision of (2) The Pooling Administrator shall service or exchange access. For pur- maintain no more than a six-month in- poses of this subpart, such term does ventory of telephone numbers in each not include a person insofar as such thousands-block number pool. person is engaged in the provision of a [65 FR 37709, June 16, 2000, as amended at 66 commercial mobile service under 47 FR 9532, Feb. 8, 2001; 68 FR 43009, July 21, U.S.C. 332(c). 2003] (k) The term administrator (LNPA) means an inde- § 52.21 Definitions. pendent, non-governmental entity, not As used in this subpart: aligned with any particular tele- (a) The term 100 largest MSAs includes communications industry segment, the 100 largest MSAs as identified in whose duties are determined by the the 1990 U.S. Census reports, as set NANC.

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(l) The term location portability means communications service to another, the ability of users of telecommuni- without switching from one tele- cations services to retain existing tele- communications carrier to another. communications numbers without im- (t) The term service provider port- pairment of quality, reliability, or con- ability means the ability of users of venience when moving from one phys- services to retain, ical location to another. at the same location, existing tele- (m) The term long-term database meth- communications numbers without im- od means a database method that com- pairment of quality, reliability, or con- plies with the performance criteria set venience when switching from one tele- forth in § 52.3(a). communications carrier to another. (n) The term number portability means (u) The term transitional number port- the ability of users of telecommuni- ability measure means a method that al- cations services to retain, at the same lows one local exchange carrier to location, existing telecommunications transfer telephone numbers from its numbers without impairment of qual- network to the network of another ity, reliability, or convenience when telecommunications carrier, but does switching from one telecommuni- not comply with the performance cri- cations carrier to another. teria set forth in 52.3(a). Transitional (o) The term regional database means number portability measures are tech- an SMS database or an SMS/SCP pair nically feasible methods of providing that contains information necessary number portability including Remote for carriers to provide number port- Call Forwarding (RCF), Direct Inward ability in a region as determined by Dialing (DID), Route Indexing—Port- the NANC. ability Hub (RI-PH), Directory Number (p) The term Registered Internet-based Route Indexing (DNRI) and other com- TRS User has the meaning set forth in parable methods. 47 CFR 64.601. (v) The term VRS provider means an (q) The term service control point entity that provides VRS as defined by (SCP) means a database in the public 47 CFR 64.601. switched network which contains infor- (w) The term 2009 LNP Porting Inter- mation and call processing instructions vals Order refers to In the Matters of needed to process and complete a tele- Local Number Portability Porting In- phone call. The network switches ac- terval and Validation Requirements; cess an SCP to obtain such informa- Telephone Number Portability, WC tion. Typically, the information con- Docket No. 07–244, CC Docket No. 95– tained in an SCP is obtained from the 116, Report and Order and Further No- SMS. tice of Proposed Rulemaking, FCC 09– (r) The term service management sys- 41 (2009). tem (SMS) means a database or com- puter system not part of the public [61 FR 38637, July 25, 1996. Redesignated at 61 FR 47353, Sept. 6, 1996, as amended at 61 FR switched network that, among other 47355, Sept. 6, 1996; 63 FR 68203, Dec. 10, 1998; things: 67 FR 6435, Feb. 12, 2002; 68 FR 43009, July 21, (1) Interconnects to an SCP and sends 2003; 73 FR 9481, Feb. 21, 2008; 73 FR 41293, to that SCP the information and call July 18, 2008; 74 FR 31638, July 2, 2009] processing instructions needed for a network switch to process and com- § 52.23 Deployment of long-term data- plete a telephone call; and base methods for number port- (2) Provides telecommunications car- ability by LECs. riers with the capability of entering (a) Subject to paragraphs (b) and (c) and storing data regarding the proc- of this section, all local exchange car- essing and completing of a telephone riers (LECs) must provide number port- call. ability in compliance with the fol- (s) The term service portability means lowing performance criteria: the ability of users of telecommuni- (1) Supports network services, fea- cations services to retain existing tele- tures, and capabilities existing at the communications numbers without im- time number portability is imple- pairment of quality, reliability, or con- mented, including but not limited to venience when switching from one tele- emergency services, CLASS features,

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