ANSI ATIS 1000112A-2006 Subsystem Number Assignment Guidelines (Supplement to ATIS-1000112-2005).pdf

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1、 AMERICAN NATIONAL STANDARD FOR TELECOMMUNICATIONS ATIS-1000112.a.2006(R2011) Subsystem Number Assignment Guidelines ATIS is the leading technical planning and standards development organization committed to the rapid development of global, market-driven standards for the information, entertainment

2、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 Technologies, Quality of Service, and Billing and Operational Support. In addition, numerous I

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14、ED IN THIS DOCUMENT IS AT THE RISK OF THE USER. NOTE - The users attention is called to the possibility that compliance with this standard may require use of an invention covered by patent rights. By publication of this standard, no position is taken with respect to whether use of an invention cover

15、ed by patent rights will be required, and if any such use is required no position is taken regarding the validity of this claim or any patent rights in connection therewith. ATIS-1000112.a.2006(R2011), Subsystem Number Assignment Guidelines Is an American National Standard developed by the ATIS Pack

16、et Technologies and Systems Committee (PTSC). Published by Alliance for Telecommunications Industry Solutions 1200 G Street, NW, Suite 500 Washington, DC 20005 Copyright 2011 by Alliance for Telecommunications Industry Solutions All rights reserved. No part of this publication may be reproduced in a

17、ny form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. For information contact ATIS at 202.628.6380. ATIS is online at . Printed in the United States of America. ATIS-1000112.a.2006 (Supplement to ATIS-1000112-2005) American National Standard

18、for Telecommunications SUBSYSTEM NUMBER ASSIGNMENT GUIDELINES Secretariat Alliance for Telecommunications Industry Solutions Approved June 12, 2006 American National Standards Institute, Inc. Abstract This supplement to ATIS-10000112.2005 reassigns some of the subsystem number code points previously

19、 shown as spare to be ANSI standard. These code points may be used to support applications which require internetwork messaging, but which do not qualify for international standardization. This addendum also provides the administrative procedures for requesting and assigning these subsystem number c

20、ode points. ATIS-1000112.a.2006 ii FOREWORD The information contained in this Foreword is not part of this American National Standard (ANS) and has not been processed in accordance with ANSIs requirements for an ANS. As such, this Foreword may contain material that has not been subjected to public r

21、eview or a consensus process. In addition, it does not contain requirements necessary for conformance to the Standard. The administrative procedures in this supplement are loosely modeled on the corresponding procedures for assigning internetwork Translation Type code values. As such, references to

22、United States CCS networks should be taken to refer to those networks that employ ANSI SS7 signaling for non-ISUP messaging. It is assumed that other, non-U.S. networks will follow the same guidelines and procedures as United States CCS networks and will use the same code point values. The expectati

23、on is that addenda to ATIS-10000111 through ATIS-10000115 will be published as necessary to promptly document the assignment of any new code points or code point values in these standards. The Alliance for Telecommunication Industry Solutions (ATIS) serves the public through improved understanding b

24、etween carriers, customers, and manufacturers. The Packet Technologies and Systems Committee (PTSC) - formerly T1S1 - develops and recommends standards and technical reports related to services, architectures, and signaling, in addition to related subjects under consideration in other North American

25、 and international standards bodies. PTSC coordinates and develops standards and technical reports relevant to telecommunications networks in the U.S., reviews and prepares contributions on such matters for submission to U.S. ITU-T and U.S. ITU-R Study Groups or other standards organizations, and re

26、views for acceptability or per contra the positions of other countries in related standards development and takes or recommends appropriate actions. ANSI guidelines specify two categories of requirements: mandatory and recommendation. The mandatory requirements are designated by the word shall and r

27、ecommendations by the word should. Where both a mandatory requirement and a recommendation are specified for the same criterion, the recommendation represents a goal currently identifiable as having distinct compatibility or performance advantages. Suggestions for improvement of this document are we

28、lcome. They should be sent to the Alliance for Telecommunications Industry Solutions, PTSC Secretariat, 1200 G Street NW, Suite 500, Washington, DC 20005. The Interoperability (IOP) Subcommittee was responsible for the development of this document. AMERICAN NATIONAL STANDARD ATIS-1000112.a.2006 Amer

29、ican National Standard for Telecommunications Subsystem Number Assignment Guidelines 1 1 CHANGES TO EXISTING TEXT The changes made to the existing ATIS-10000112.2005 are shown below: 1.1 Add new Annex D to ATIS-10000112.2005, Chapter 3: Annex D (normative) D Guidelines and Procedures for Assigning I

30、nternetwork Subsystem Number Code Values D.1 Introduction This Annex contains the administrative procedures for requesting an internetwork subsystem number code value and also contains the criteria and guidelines for the assignment of subsystem number code values to be used by the United States CCS

31、networks for internetwork messaging. D.2 Assumptions The following assumptions have been made: 1. These guidelines and procedures apply to subsystem numbers in the internetwork range only. The usage of subsystem numbers in the international or network specific range is not affected. 2. A particular

32、application is addressed by the combination of Destination Point Code and subsystem number. Therefore, the use of a (national or international) standard subsystem number at a particular Point Code where the corresponding (national or international) application is not implemented will not lead to rou

33、ting failure or misrouting of messages. D.3 Procedures for Requesting a Subsystem Number Code Value Assignment A request for assignment of a new standard a subsystem number code value must be submitted to the PTSC. This request must contain a proposal for use and must be submitted by contribution or

34、 by liaison to the PTSC. The PTSC can only assign a subsystem number code ATIS-1000112.a.2006 2 value in response to such a request. The minimum required content of a request is described below: 1. Application Description: The application should be described in a high level fashion. This statement m

35、ust unambiguously describe the new application. The application need not be a standard application. 2. Internetwork Needs: The statement must explain why the application requires MTP internetwork messaging currently or in the near future, and why Global Title Translation is less desirable for derivi

36、ng the subsystem number used to address the application within the destination node. D.4 Guidelines for Assigning Standard Internetwork Subsystem Number Code Values 1. Only subsystem number code values in the internetwork range can be assigned. 2. At most one subsystem number code value can be assig

37、ned to an Application Process. In addition, subsystem functionality must be sufficiently narrow that any reasonable implementation will not be divisible into functions that could fail separately (requiring separate subsystem management). 3. In order to assign a subsystem number for a particular appl

38、ication, the application must currently require or in the future require internetwork MTP routing. The assignment of subsystem number values is given in ATIS-10000112.2005, Chapter 3, clause 3.4.2.1. D.5 Guidelines for Using Subsystem Number Code Values 1. Network providers may initially implement s

39、ervices within the network specific range. If a particular service evolves to the point that it requires an internetwork subsystem number, the network providers must use - at the interface - the assigned internetwork value. 2. A descending order of assignment is recommended for network specific valu

40、es. ATIS-1000112.a.2006 3 1.2 Replace ATIS-10000112.2005, Chapter 3, clause 3.4.2.1 with the following text: 3.4.2.1 Subsystem number The subsystem number (SSN) identifies a SCCP user function and, when provided, consists of one octet coded as follows: Bits 87654321 00000000 SSN not known/not used 0

41、0000001 SCCP Management 00000010 reserved 00000011 ISDN User Part 00000100 OMAP 00000101 Mobile Application Part (MAP)500000110 Home Location Register (HLR)500000111 Visited Location Register (VLR)500001000 Mobile Switching Center (MSC)500001001 Equipment Identification Register (EIR)500001010 Authe

42、ntication Center (AC)500001011 Reserved (used in ITU-T for ISDN supplementary services) 00001100 Reserved for international use 00001101 Reserved (used in ITU-T for broadband ISDN edge-to-edge applications) 00001110 Reserved (used in ITU-T for TC test responder) 00001111 to Reserved for internationa

43、l use 00011111 00100000 to Reserved for ANSI assignment for national | internetwork applications 01100000 01100001 to Reserved for ANSI use 100000000 10000001 to Network-specific applications 11111110 11111111 Reserved for expansion Network specific subsystem numbers should be assigned in descending

44、 order starting with “11111110.“ 5These codes are assigned to the MAP application defined by EIA/TIA for North American networks. ATIS-1000112.a.2006 4 Guidelines and procedures for assigning internetwork subsystem number code values are described in ATIS-10000112.2005, Chapter 3, normative Annex D.

45、 Subsystem number codes are assigned as described in ATIS-10000112.2005, Chapter 3, normative Annex D. 1.3 Add the following sentence at the end of ATIS-10000112.2005 Chapter 6, clause 3.2.1: Detailed procedures for requesting standardization of a subsystem number are given in ATIS-10000112.2005, Chapter 3, normative Annex D.