ATIS 0300072-2002 North American Numbering Plan (NANP) Expansion Reference Document.pdf
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1、 ATIS-0300072 NORTH AMERICAN NUMBERING PLAN (NANP) EXPANSION REFERENCE DOCUMENT August 17, 2002 Copyright 2002 by the Alliance for Telecommunications Industry Solutions, Inc. All rights reserved. The INC NANP Expansion Reference Document dated August 17, 2002 (former document number INC 02-0729-30)
2、is copyrighted, published and distributed by ATIS on behalf of the Industry Numbering Committee (INC). Except as expressly permitted, no part of this publication may be reproduced or distributed in any form, including electronic media or otherwise, without the prior express written permission of ATI
3、S. Participants in the INC and other parties are hereby authorized to reproduce this document and distribute it within their own business organizations for business purposes, provided that this notice continues to appear in the reproduced documentation. Resale is prohibited. For ordering information
4、, please contact: ATIS 1200 G Street N.W., Suite 500 Washington, DC 20005 (202) 628-6380 incatis.org A complete listing of INC Documents is available on the ATIS Web Site at: http:/www.atis.org/inc/docs/.asp ATIS is the leading technical planning and standards development organization committed to t
5、he rapid development of global, market-driven standards for the information, entertainment and communications industry. More than 250 companies actively formulate standards in ATIS 18 Committees, covering issues including: IPTV, Service Oriented Networks, Energy Efficiency, IP-Based and Wireless Tec
6、hnologies, Quality of Service, and Billing and Operational Support. In addition, numerous Incubators, Focus and Exploratory Groups address emerging industry priorities including “Green”, IP Downloadable Security, Next Generation Carrier Interconnect, IPv6 and Convergence. ATIS is the North American
7、Organizational Partner for the 3rd Generation Partnership Project (3GPP), a member and major U.S. contributor to the International Telecommunication Union (ITU) Radio and Telecommunications Sectors, and a member of the Inter-American Telecommunication Commission (CITEL). For more information please
8、visit . - The Industry Numbering Committee (INC) provides an open forum to address and resolve industry-wide issues associated with planning, administration, allocation, assignment and use of North American Numbering Plan (NANP) numbering resources within the NANP area. This document is maintained u
9、nder the direction of ATIS and the INC. Suggestions for improvement of this document are welcome. They should be sent to the Alliance for Telecommunications Industry Solutions, INC Staff, 1200 G Street NW, Suite 500, Washington, DC 20005. All changes to this document shall be made through the INC is
10、sue resolution process and adopted by the INC as set forth in the ATIS Operating Procedures. - Notice of Disclaimer ii) portability with pooling will at a minimum cover the top one hundred MSAs in the U.S.; iii) portability and pooling are restricted to a rate center; iv) portability will apply to a
11、ll geographic numbers used in a wireline/wireless environment; v) location portability will be supported throughout any given portability pooling area and will not be restricted to rate centers; and vi) While service provider portability refers to the ability of end users to retain the same telephon
12、e number as they change from one service provider to another, service portability refers to the ability of users of telecommunications services to retain existing telecommunications numbers without impairment of quality, reliability or convenience when switching from one telecommunications service t
13、o another service (i.e., POTS to ISDN) provided by the same telecommunications carrier. r. The N restriction (i.e., 2 through 9) will be removed from the existing D digit in the Central Office (CO) code field coincident with the implementation of the NANP expansion plan s. The conditions defined in
14、the INC Uniform Dialing Plan will be implemented before the NANP expansion plan is implemented. 3.0 NANP Functionality The NANP supports the provision of a basic set of functionalities which are described in Section 3.1. The key function provided by the NANP number set itself is user access and, use
15、r derived information relevant to that access (e.g., a 213 number is located in Los Angeles, an 800 call is “free“, etc.). The ability to use the NANP number to derive the specific information required to perform traditional functions is a product of systematic intelligence provided in the networks
16、infrastructure. In short, the numbering plan is an enabler, and, not a direct provider of most network functions. However, some of the networks most fundamental capabilities are supported in this manner (i.e., rating, routing, billing, etc.). Therefore, when considering the merits of existing and fu
17、ture NANP based “functionalities,“ one must consider the impact on existing or new network infrastructure (i.e., switching, billing systems, etc.) to support such functionality. 3.1 Existing Functions - The existing NANP supports the following functionalities: Terminal Identification - A NANP number
18、 uniquely identifies the network service access point/interface for each PSTN terminal in terms of identifying the local switch and the specific switch facilities associated with that terminal. Personal Identification - When a NANP number is used for personal identification, it uniquely identifies a
19、n individual/ person. Call delivery/routing is controlled by a service profile management capability which directs/routes the calls to a terminating point (typically identified by another NANP number) chosen by the called party. Special Access Code (SAC) 500 is currently available for this type of a
20、pplication. Service Identification - Service identification using NANP numbers is the association between a number and a service. An example is that calls to 800 numbers are “toll-free“ to the calling party. Geographic Significance - For example, the assignment of NPA codes to a specific/discrete ge
21、ographic area allows callers to determine, and, associate a number with the called geographic location. Terminal and Personal Mobility - NANP numbers enable networks to identify mobile terminals and mobile subscribers (either those who are traced through the terminal roaming, or, personal mobility s
22、ervices PCS). Roaming - The current NANP enables wireless roaming. Rating/Billing Information (related to distance sensitivity) - For example, in the US every geographic NANP number is associated with a specific rate center. Rate centers provide geographic location information which is used by the n
23、etworks billing systems to derive the distance between the calling and called party that is used in calculating the cost of a call. Account Information - The NANP number is widely used by network operators to identify customers with their accounts. Once identified by the NANP number, customer accoun
24、t information such as equipment installed, discount plans, credit rating, etc. information is available. Routing Information (digit analysis, trunk group selection) - The network utilizes the dialed NANP number to determine how to route each call. Digit analysis of the NANP number is performed at ea
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