Media Gateway Control Protocol Architecture and Requirements
RFC 2805

 
Document Type RFC - Informational (April 2000; No errata)
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Network Working Group                                          N. Greene
Request for Comments: 2805                               Nortel Networks
Category: Informational                                       M. Ramalho
                                                           Cisco Systems
                                                                B. Rosen
                                                                 Marconi
                                                              April 2000

      Media Gateway Control Protocol Architecture and Requirements

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2000).  All Rights Reserved.

Abstract

   This document describes protocol requirements for the Media Gateway
   Control Protocol between a Media Gateway Controller and a Media
   Gateway.

Greene, et al.               Informational                      [Page 1]
RFC 2805            MG Control Protocol Requirements          April 2000

Table of Contents

   1.  Introduction ..............................................  3
   2.  Terminology ...............................................  3
   3.  Definitions ...............................................  3
   4.  Specific functions assumed within the MG ..................  5
   5.  Per-Call Requirements .....................................  6
      5.1.  Resource Reservation .................................  6
      5.2.  Connection Requirements ..............................  7
      5.3.  Media Transformations ................................  8
      5.4.  Signal/Event Processing and Scripting ................  9
      5.5.  QoS/CoS .............................................. 10
      5.6.  Test Support ......................................... 11
      5.7.  Accounting ........................................... 11
      5.8.  Signalling Control ................................... 11
   6.  Resource Control .......................................... 12
      6.1.  Resource Status Management ........................... 12
      6.2.  Resource Assignment .................................. 13
   7.  Operational/Management Requirements ....................... 13
      7.1.  Assurance of Control/Connectivity .................... 13
      7.2.  Error Control ........................................ 14
      7.3.  MIB Requirements ..................................... 15
   8.  General Protocol Requirements ............................. 15
      8.1.  MG-MGC Association Requirements ...................... 16
      8.2.  Performance Requirements ............................. 17
   9.  Transport ................................................. 17
      9.1.  Assumptions made for underlying network .............. 17
      9.2.  Transport Requirements ............................... 18
   10.  Security Requirements .................................... 18
   11.  Requirements specific to particular bearer types ......... 19
      11.1.  Media-specific Bearer types ......................... 20
         11.1.1.  Requirements for TDM PSTN (Circuit) ............ 20
         11.1.2.  Packet Bearer type ............................. 22
         11.1.3.  Bearer type requirements for ATM ............... 23
      11.2.  Application-Specific Requirements ................... 26
         11.2.1.  Trunking Gateway ............................... 26
         11.2.2.  Access Gateway ................................. 27
         11.2.3.  Trunking/Access Gateway with fax ports ......... 27
         11.2.4.  Trunking/Access Gateway with text telephone .... 28
         11.2.5.  Network Access Server .......................... 29
         11.2.6.  Restricted Capability Gateway .................. 30
         11.2.7.  Multimedia Gateway ............................. 31
         11.2.8.  Audio Resource Function ........................ 32
         11.2.9. Multipoint Control Units ........................ 42
   12.  References ............................................... 43
   13.  Acknowledgements ......................................... 43
   14.  Authors' Addresses ....................................... 44
   15.  Full Copyright Statement ................................. 45

Greene, et al.               Informational                      [Page 2]
RFC 2805            MG Control Protocol Requirements          April 2000

1.  Introduction

   This document describes requirements to be placed on the Media
   Gateway Control Protocol. When the word protocol is used on its own
   in this document it implicitly means the Media Gateway Control
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