V5.2-User Adaptation Layer (V5UA)
RFC 3807
Document | Type |
RFC - Proposed Standard
(June 2004; No errata)
Updates RFC 3057
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Authors | Eva Weilandt , Neeraj Khanchandani , Sira Rao | ||
Last updated | 2015-10-14 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 3807 (Proposed Standard) | |
Action Holders |
(None)
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||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Jon Peterson | ||
Send notices to | (None) |
Network Working Group E. Weilandt Request for Comments: 3807 N. Khanchandani Updates: 3057 S. Rao Category: Standards Track Nortel Networks June 2004 V5.2-User Adaptation Layer (V5UA) Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (2004). Abstract This document defines a mechanism for the backhauling of V5.2 messages over IP using the Stream Control Transmission Protocol (SCTP). This protocol may be used between a Signaling Gateway (SG) and a Media Gateway controller (MGC). It is assumed that the SG receives V5.2 signaling over a standard V5.2 interface. This document builds on the ISDN User Adaptation Layer Protocol (RFC 3057). It defines all necessary extensions to the IUA Protocol needed for the V5UA protocol implementation. Weilandt, et al. Standards Track [Page 1] RFC 3807 V5.2-User Adaptation Layer (V5UA) June 2004 Table of Contents 1. Introduction ................................................. 2 1.1. Scope .................................................. 3 1.2. Terminology ............................................ 3 1.3. V5.2 Overview .......................................... 5 1.4. Distribution of responsibilities between MGC and SG .... 7 1.5. Client/Server Model .................................... 7 1.6. Addition to boundary primitives ........................ 7 1.6.1. V5 specific boundary primitives ................ 7 2. Conventions .................................................. 9 3. SCTP Stream Management ....................................... 10 4. Proposed V5.2 Backhaul Architecture .......................... 10 4.1. V5UA Message Header .................................... 11 4.2. V5 Naming Conventions for Interface Identifier ......... 12 4.3. V5 Additions to IUA Boundary Primitives ................ 13 4.4. Link Status Messages ................................... 14 4.5. Sa-Bit Messages ........................................ 16 4.6. Error Indication Message ............................... 17 5. Procedures ................................................... 18 5.1. V5 Layer 1 failure ..................................... 18 5.2. Loss of V5UA peer ...................................... 19 5.3. C-channel overload on SG ............................... 19 6. Examples ..................................................... 20 6.1. Link Identification Procedure (successful) ............. 20 7. Security Considerations ...................................... 21 8. IANA Considerations .......................................... 21 8.1. SCTP Payload Protocol Identifier ....................... 21 8.2. V5UA Port Number ....................................... 22 9. Acknowledgements ............................................. 22 10. References ................................................... 22 10.1. Normative References ................................... 22 10.2. Informative References ................................. 23 11. Authors' Addresses ........................................... 23 12. Full Copyright Statement ..................................... 24 1. Introduction This document describes a method of implementing V5.2 backhaul messaging over IP using a modified version of the ISDN User Adaptation Layer Protocol (IUAP) [1]. V5UA builds on top of IUA, defining the necessary extensions to IUA for a V5.2 implementation. Since V5UA is meant to be an extension to IUAP, everything defined in [1] is also valid for V5UA unless otherwise specified in this document. Weilandt, et al. Standards Track [Page 2] RFC 3807 V5.2-User Adaptation Layer (V5UA) June 2004 This document does not describe the V5 standard itself. The V5 protocol is defined by ETSI standards [2,3]. Any description of the V5 protocol in this document is meant to make the text easier to understand. 1.1. Scope There is a need for Switched Circuit Network (SCN) signaling protocol delivery from a V5.2 Signaling Gateway (SG) to a Media Gateway Controller (MGC), analogous to the implementation of the ISDN Q.921Show full document text