Signaling System 7 (SS7) Message Transfer Part 2 (MTP2) - User Adaptation Layer
RFC 3331
| Document | Type | RFC - Proposed Standard (September 2002; Errata) | |
|---|---|---|---|
| Authors | Brian Bidulock , Ken Morneault , Ram Dantu , Greg Sidebottom , Jacob Heitz | ||
| 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 3331 (Proposed Standard) | |
| Action Holders |
(None)
|
||
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Scott Bradner | ||
| IESG note | Responsible: RFC Editor | ||
| Send notices to | (None) | ||
Network Working Group K. Morneault
Request for Comments: 3331 Cisco Systems
Category: Standards Track R. Dantu
NetRake
G. Sidebottom
Signatus Technologies
B. Bidulock
OpenSS7
J. Heitz
Lucent
September 2002
Signaling System 7 (SS7) Message Transfer Part 2 (MTP2) -
User Adaptation Layer
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 (2002). All Rights Reserved.
Abstract
This document defines a protocol for the backhauling of Signaling
System 7 Message Transfer Part 2 (SS7 MTP2) User signalling messages
over IP using the Stream Control Transmission Protocol (SCTP). This
protocol would be used between a Signalling Gateway (SG) and Media
Gateway Controller (MGC). It is assumed that the SG receives SS7
signalling over a standard SS7 interface using the SS7 Message
Transfer Part (MTP) to provide transport. The Signalling Gateway
would act as a Signalling Link Terminal.
Morneault, et. al. Standards Track [Page 1]
RFC 3331 SS7 MTP2 User Adaptation Layer September 2002
Table of Contents
1. Introduction.............................................. 2
1.1 Scope.................................................. 3
1.2 Terminology............................................ 3
1.3 M2UA Overview.......................................... 5
1.4 Services Provided by the M2UA Adaptation Layer......... 7
1.5 Functions Provided by the M2UA Layer................... 9
1.6 Definition of the M2UA Boundaries..................... 12
2. Conventions.............................................. 16
3. Protocol Elements........................................ 16
3.1 Common Message Header................................. 16
3.2 M2UA Message Header................................... 22
3.3 M2UA Messages......................................... 23
4. Procedures............................................... 58
4.1 Procedures to Support the M2UA-User Layer............. 58
4.2 Receipt of Primitives from the Layer Management....... 59
4.3 AS and ASP State Maintenance.......................... 61
4.4 Link Key Management Procedures........................ 73
5. Examples of MTP2 User Adaptation (M2UA) Procedures....... 75
5.1 Establishment of associations between SGP and MGC..... 75
examples
5.2 ASP Traffic Fail-over Examples........................ 77
5.3 SGP to MGC, MTP Level 2 to MTP Level 3 Boundary
Procedures............................................ 78
6. Timer Values............................................. 85
7. Security Considerations.................................. 85
7.1 Threats................................................ 85
7.2 Protecting Confidentiality............................. 86
8. IANA Considerations...................................... 86
8.1 SCTP Payload Protocol Identifier....................... 86
8.2 M2UA Protocol Extensions............................... 86
9. Acknowledgements......................................... 87
10. References............................................... 88
Appendix A: Signalling Network Architecture.................. 90
Authors' Addresses........................................... 92
Full Copyright Statement..................................... 94
1. Introduction
This document defines a protocol for the backhauling of SS7 [1] MTP2
User [2] [3] [4] (i.e. MTP3) signalling messages over IP using the
Stream Control Transmission Protocol (SCTP) [8]. This protocol would
be used between a Signalling Gateway (SG) and Media Gateway
Controller (MGC).
Morneault, et. al. Standards Track [Page 2]
RFC 3331 SS7 MTP2 User Adaptation Layer September 2002
1.1 Scope
There is a need for Switched Circuit Network (SCN) signalling
protocol delivery from a Signalling Gateway (SG) to a Media Gateway
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