Gateway Control Protocol Version 1
RFC 3525

Document Type RFC - Historic (June 2003; Errata)
Obsoleted by RFC 5125
Obsoletes RFC 3015
Last updated 2015-10-14
Stream IETF
Formats plain text pdf html bibtex
Stream WG state (None)
Document shepherd No shepherd assigned
IESG IESG state RFC 3525 (Historic)
Consensus Boilerplate Unknown
Telechat date
Responsible AD Scott Bradner
Send notices to (None)
Network Working Group                                          C. Groves
Request for Comments: 3525                                   M. Pantaleo
Obsoletes: 3015                                              LM Ericsson
Category: Standards Track                                    T. Anderson
                                                              Consultant
                                                               T. Taylor
                                                         Nortel Networks
                                                                 Editors
                                                               June 2003

                  Gateway Control Protocol Version 1

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 (2003).  All Rights Reserved.

Abstract

   This document defines the protocol used between elements of a
   physically decomposed multimedia gateway, i.e., a Media Gateway and a
   Media Gateway Controller.  The protocol presented in this document
   meets the requirements for a media gateway control protocol as
   presented in RFC 2805.

   This document replaces RFC 3015.  It is the result of continued
   cooperation between the IETF Megaco Working Group and ITU-T Study
   Group 16.  It incorporates the original text of RFC 3015, modified by
   corrections and clarifications discussed on the Megaco
   E-mail list and incorporated into the Study Group 16 Implementor's
   Guide for Recommendation H.248.  The present version of this document
   underwent  ITU-T Last Call as Recommendation H.248 Amendment 1.
   Because of ITU-T renumbering, it was published by the ITU-T as
   Recommendation H.248.1 (03/2002), Gateway Control Protocol Version 1.

   Users of this specification are advised to consult the H.248 Sub-
   series Implementors' Guide at http://www.itu.int/itudoc/itu-
   t/com16/implgd for additional corrections and clarifications.

Groves, et al.              Standards Track                     [Page 1]
RFC 3525                Gateway Control Protocol               June 2003

Conventions used in this document

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

Table of Contents

   1 Scope.........................................................5
     1.1 Changes From RFC 3015.....................................5
     1.2 Differences From ITU-T Recommendation H.248.1 (03/2002)...5
   2 References....................................................6
     2.1 Normative references......................................6
     2.2 Informative references....................................9
   3 Definitions..................................................10
   4 Abbreviations................................................11
   5 Conventions..................................................12
   6 Connection model.............................................13
     6.1 Contexts.................................................16
     6.2 Terminations.............................................17
       6.2.1 Termination dynamics.................................21
       6.2.2 TerminationIDs.......................................21
       6.2.3 Packages.............................................22
       6.2.4 Termination properties and descriptors...............23
       6.2.5 Root Termination.....................................25
   7 Commands.....................................................26
     7.1 Descriptors..............................................27
       7.1.1 Specifying parameters................................27
       7.1.2 Modem descriptor.....................................28
       7.1.3 Multiplex descriptor.................................28
       7.1.4 Media descriptor.....................................29
       7.1.5 TerminationState descriptor..........................29
       7.1.6 Stream descriptor....................................30
       7.1.7 LocalControl descriptor..............................31
       7.1.8 Local and Remote descriptors.........................32
       7.1.9 Events descriptor....................................35
       7.1.10 EventBuffer descriptor..............................38
       7.1.11 Signals descriptor..................................38
       7.1.12 Audit descriptor....................................40
       7.1.13 ServiceChange descriptor............................41
       7.1.14 DigitMap descriptor.................................41
Show full document text