1、 ATIS-0300061 NPA CODE RELIEF PLANNING AND NOTIFICATION GUIDELINES Reissued with the resolution of Issue 850. April 20, 2018 Page 2 Copyright 2018 by the Alliance for Telecommunications Industry Solutions, Inc. All rights reserved. The NPA Code Relief Planning ATIS-0300046, Recommended Notification
2、Procedures to Industry for Changes in Access Network Architecture. NPA Code Relief Planning i.e. two-way 7-digit dialing across NPAs might involve several rate centers and many NXX codes in multiple NPAs. Additionally, the relief planning model used by NANPA cannot take into account the protected ro
3、utes when projecting the lives of new NPA relief alternatives because the model assumptions are based on the premise that all NXXs available for assignment can be assigned to all rate centers. A high number of protected routes may impact the availability of NXX codes in specific rate centers (usuall
4、y high-demand rate centers), which directly impacts the exhaust timeframe of an area code. As a result, NPA relief planning may start prematurely or may not permit for the standard intervals for relief implementation. In the long term, the plan shall result in the most effective use possible of all
5、codes serving a given area. Ideally, all of the codes in a given area shall exhaust about the same time in the case of splits. In practice, this may not be possible, but severe imbalances, for example, a difference in NPA lifetimes of more than 10 years, shall be avoided. 5.1 Determine the Expected
6、NPA Exhaust Period - Through the use of historical growth data as well as expected changes (e.g. pooling) to NXX demands in the future, NANPA should project to the best of its ability the expected quarter of exhaust of the NPA. Every practical source of data, including the NRUF survey results should
7、 be used as an aid in this projection. Projection results should be reported to the industry as soon as the NRUF or other analysis results are available. Once the earliest likely exhaust date is determined, NANPA should suggest a mandatory dialing date six months prior to the exhaust date if the rec
8、ommended relief is an overlay. If the recommended relief is a geographic split, the end of the recorded announcement period should be at least six months prior to the earliest likely exhaust date. 2Per letter dated 10-29-97 from NANC Chairman to INC Moderator. 3In the case of an NPA overlay, cross N
9、PA boundary calls originating from the overlay must be dialed on a 10-digit basis. NPA Code Relief Planning and, b) The NPA is not in jeopardy. 5.12 NPA Relief Planning Life Cycle The life cycle of an NPA relief planning and implementation project may vary widely, depending on the local regulatory p
10、rocess. It typically involves the following tasks or events: NANPAs notification of the start of the relief planning process to the industry; The industrys review of the IPD; The process of the industry reaching consensus on a relief recommendation(s) to the appropriate regulator; The filing of the
11、relief petition with the regulator; The regulatory decision process (which may include regulatory hearings as well as public hearings); and The order from the regulator. The timing between the above tasks varies, and these tasks or events may be interrupted or delayed. Typical delays or interruption
12、s may include: The industry postpones the filing of the relief petition; The relief petition becomes eligible for withdrawal (see Section 5.10); The regulator does not immediately act on the petition; After issuing a relief order, the regulator subsequently determines that relief is not needed and i
13、ssues an order of “suspension until further notice”; or The regulator dismisses the relief petition. NPA Code Relief Planning each state or province, each metropolitan area and each industry segment will have unique characteristics which could introduce concerns not included here. The following item
14、s are examples of issues which, based on past industry experiences, could create impediments to a successful and efficient implementation effort. 7.1 Regulatory Involvement - Involvement of the appropriate regulatory authority staff during NPA code relief planning may expedite the process of address
15、ing public policy concerns throughout the process. 7.2 Timing and Schedules - Issues related to timing and scheduling will vary with the type of relief method to be implemented as well as the level of difficulty of the required changes. In general, the relief implementation should be in place six mo
16、nths prior to the projected exhaust of the NPA, but in extraordinary situations, at least three months before the existing NPA would exhaust under the highest growth projections. 7.3 Customer Calling Patterns - Existing and planned local calling areas should be considered during the planning process
17、 and retained, wherever practical, along with their existing or planned dialing arrangements. This may prevent regulatory policy delays during implementation and/or unexpected changes to the final plan 7.4 Rate Center Consolidations Any pending rate center consolidation plans should be considered du
18、ring a relief planning meeting. Once a regulator makes a decision on rate center consolidation, the Relief Planner should obtain applicable documentation. 7.5 LNP Technical Considerations Any technical issues related to LNP should be considered during a relief planning meeting. Since the introductio
19、n of LNP, industry experience shows that 9See FCC 01-362 81-94. NPA Code Relief Planning and/or b) are materially affected by decisions made via the consensus process during NPA relief planning activities for the affected NPA. ANI CONVERSION The process by which the NPA portion of the calling partys
20、 automatic number identification (ANI) from end offices located in the new NPA changes from the old NPA to the new NPA. Audit The accumulation and evaluation of evidence about documented information of an auditee to determine and report on the degree of compliance with INC industry guidelines. Audit
21、ee The SP/NANPA/PA that is the subject of an audit. Auditor The FCC or its other designated agents perform audits of US numbering resources (FCC 00-429 90). State Commissions also may conduct audits. (FCC 01-362 101). CLASS Custom Local Area Signaling Service (CLASS) is one of an identified group of
22、 network-provided enhanced services. Note: A CLASS group for a given network usually includes several enhanced service offerings, such as incoming-call identification, call trace, call blocking, automatic return of the most recent incoming call, call redial, and selective forwarding and programming
23、to permit distinctive ringing for incoming calls. CO Code Administrator Entity(ies) responsible for the administration of the NXXs within an NPA. In the United States and its territories, this is currently the NANPA. See also 47 CFR 52.15. Code Holder An assignee of a pooled or non-pooled NXX that i
24、s assigned by the CO Code Administrator. The responsibilities of an assignee for a pooled NXX are defined in Section 4.2.1 of the Thousands Block Number (NXX-X) Pooling Administration Guidelines (TBPAG) and for a non pooled NXX are defined in Section 6.3 of the Central Office Code (NXX) Assignment G
25、uidelines (COCAG). A given Code Holder is identified in the LERG Routing Guide as the NPA-NXX-A (Assignee) OCN record holder. Conservation Consideration given to the efficient and effective use of a finite numbering resource in order to minimize the cost and need to expand its availability, while at
26、 the same time allowing the maximum flexibility in the introduction of new services, capabilities and features. Consensus Consensus is established when substantial agreement has been reached among Affected Parties or their designated representative participating in the consideration of the subject a
27、t hand. Substantial agreement means more than a simple majority, but not necessarily unanimity. Other interested members of the industry that are not Affected Parties shall have the NPA Code Relief Planning & Notification Guidelines ATIS-0300061 April 20, 2018 Page 25 opportunity to express their vi
28、ews and to influence the opinions of Affected Parties, but their opinions are not considered in determining whether consensus has been achieved. Under some circumstances, consensus is achieved when the minority no longer wishes to articulate its objection (An expanded version of this definition is a
29、vailable in the ATIS Operating Procedures). Exchange or Exchange Area - A geographical area established by a Bell Operating Company (BOC) for administration and pricing of telecommunications services in a specified area that usually embraces a city, town, or village and its environs. Jeopardy NPA A
30、jeopardy condition exists when the forecasted and/or actual demand for CO Code resources will exceed the known supply during the planning/implementation interval for relief. Accordingly, pending exhaust of CO Code resources within an NPA does not represent a jeopardy condition if NPA relief has been
31、 or can be planned and the additional CO Codes associated with the NPA will be implemented in time to satisfy the need for new CO codes. Mandatory Dialing Date As a result of NPA code relief activity, the date on which the permissive dialing period ends. In the case of an NPA split or boundary reali
32、gnment, the mandatory dialing date is when all calls to both the old and new NPA codes must be dialed with the correct NPA, and all customer number changes must be completed for customers assigned numbers from NXX codes that are moved to the new NPA. NANP (North American Numbering Plan) - A numberin
33、g architecture in which every station in the areas served by the NANP is identified by a unique ten-digit address consisting of a three digit NPA code, a three digit central office code of the form NXX, and a four digit line number of the form XXXX, where N represents the digits 2-9 and X represents
34、 any digit 0-9. It is the basic numbering scheme for the telecommunications networks located in American Samoa, Anguilla, Antigua, Bahamas, Barbados, Bermuda, British Virgin Islands, Canada, Cayman Islands, Dominica, Dominican Republic, Grenada, Jamaica, Montserrat, St. Kitts & Nevis, St. Lucia, St.
35、 Vincent, Turks & Caicos Islands, Trinidad & Tobago, and the United States (including Puerto Rico, the U.S. Virgin Islands, Guam, the Commonwealth of the Northern Mariana Islands) 47 CFR 52.5 (d). NANPA (North American Numbering Plan Administration) - The NANPA is responsible for the neutral adminis
36、tration of NANP numbering resources, subject to directives from regulatory authorities in the NANP member countries. (See also 47 CFR 52.7 (e).) The NANPA is an impartial non-governmental entity that is not aligned with any particular telecommunications industry segment.11Under contract to the FCC,
37、NANPAs responsibilities include assignment of NANP resources, and, in the U.S. and its territories, coordination of area code relief planning and collection of utilization and forecast data. See also 47 CFR 52.13. 11Administration of the North American Numbering Plan, Report and Order, CC Docket No.
38、 92-237, 11 FCC Rcd 2588, 2608 (1995) (NANP Order). NPA Code Relief Planning & Notification Guidelines ATIS-0300061 April 20, 2018 Page 26 NPA Numbering Plan Area, also called an area code. An NPA is the three digit code that occupies the A, B and C positions in the ten digit NANP format that applie
39、s throughout the areas served by the NANP. NPAs are of the form NXX, where N represents the digits 2-9 and X represents any digit 0-9. In the NANP, NPAs are classified as either geographic or non-geographic. a) Geographic NPAs are NPAs which correspond to discrete geographic areas served by the NANP
40、. b) Non-geographic NPAs are NPAs that do not correspond to discrete geographic areas, but which are instead assigned for services with attributes, functionalities or requirements that transcend specific geographic boundaries. The common examples are NPAs in the N00 format, e.g. 800. NPA Code Relief
41、 NPA code relief refers to an activity that must be performed when the CO Codes within an NPA near exhaust. Providing code relief to such an NPA normally takes the form of assigning a new NPA for an NPA split or overlay. Another option is changing the boundary of the existing NPA. NPA Relief Date Th
42、e date on which Central Office codes (NXXs) may be assigned in a new NPA as a result of area code relief activity. North American Numbering Plan Numbering Resource Utilization/Forecasting (NRUF) Report The NANPA gathers forecast and utilization information to monitor and project exhaust in individua
43、l NPAs/area codes as well as in the NANP overall. This semi-annual report includes number utilization information as well as a five-year forecast of demand by year. For more detailed information, see the INC NRUF Reporting Guidelines (ATIS-0300061). Permissive Dialing Period The time frame that begi
44、ns with the introduction of the new NPA and ends with mandatory dialing. During the permissive dialing period, a call can be completed with either the old or the new dialing pattern. Pooling Administrator (PA) The entity or entities responsible for administering a thousands-block number pool. (47 CF
45、R 52.7 (g). The Pooling Administrator is responsible for the neutral administration of thousands-blocks from Central Office (CO) Codes in areas where thousands-block number pooling has been ordered or implemented. The PA is an impartial non-governmental entity that is not aligned with any particular
46、 telecommunications industry segment and is under contract to the FCC. Protected Code A central office code assigned in one NPA that is not available for assignment in an adjacent NPA in order to permit 7-digit dialing across the NPA boundary. Protected Route A route where the local calling scope fr
47、om one or more rate centers to other rate centers across NPA boundaries permits either 7- or 7 and 10-digit dialing across the NPA boundary. In the case of a protected route with 7-digit dialing, a central office code assigned in one specific geographic area of an NPA is not available for assignment
48、 in a specific geographic NPA Code Relief Planning & Notification Guidelines ATIS-0300061 April 20, 2018 Page 27 area of an adjacent NPA, but the code may be assigned outside the identified geographic area of the adjacent NPA or local calling scope. Rate Center - Rate Center is used for numbering re
49、source applications and reports to associate telephone numbers with a geographic area, as defined by the relevant regulatory agency. A Rate Center is also a uniquely defined point located within an exchange area from which mileage measurements are determined. These measurements can be used with the tariffs in the message rating processes. Records Conversion The process by which all appropriate records are converted to
