Media Gateway Control Protocol (MGCP) Version 1.0
RFC 3435
| Document | Type |
RFC - Informational
(January 2003; Errata)
Updated by RFC 3661
Obsoletes RFC 2705
Was draft-andreasen-mgcp-rfc2705bis (individual in tsv area)
|
|
|---|---|---|---|
| Last updated | 2013-03-02 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 3435 (Informational) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Scott Bradner | ||
| Send notices to | <arango@thumper.bellcore.com>, <andrew.dugan@L3.com> | ||
Network Working Group F. Andreasen
Request for Comments: 3435 B. Foster
Obsoletes: 2705 Cisco Systems
Category: Informational January 2003
Media Gateway Control Protocol (MGCP)
Version 1.0
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 (2003). All Rights Reserved.
IESG Note
This document is being published for the information of the
community. It describes a protocol that is currently being deployed
in a number of products. Implementers should be aware of RFC 3015,
which was developed in the IETF Megaco Working Group and the ITU-T
SG16 and which is considered by the IETF and ITU-T to be the
standards-based (including reviewed security considerations) way to
meet the needs that MGCP was designed to address.
Abstract
This document describes an application programming interface and a
corresponding protocol (MGCP) which is used between elements of a
decomposed multimedia gateway. The decomposed multimedia gateway
consists of a Call Agent, which contains the call control
"intelligence", and a media gateway which contains the media
functions, e.g., conversion from TDM voice to Voice over IP.
Media gateways contain endpoints on which the Call Agent can create,
modify and delete connections in order to establish and control media
sessions with other multimedia endpoints. Also, the Call Agent can
instruct the endpoints to detect certain events and generate signals.
The endpoints automatically communicate changes in service state to
the Call Agent. Furthermore, the Call Agent can audit endpoints as
well as the connections on endpoints.
Andreasen & Foster Informational [Page 1]
RFC 3435 MGCP 1.0 January 2003
The basic and general MGCP protocol is defined in this document,
however most media gateways will need to implement one or more MGCP
packages, which define extensions to the protocol suitable for use
with specific types of media gateways. Such packages are defined in
separate documents.
Table of Contents
1. Introduction.................................................5
1.1 Relation with the H.323 Standards............................7
1.2 Relation with the IETF Standards.............................8
1.3 Definitions..................................................9
1.4 Conventions used in this Document............................9
2. Media Gateway Control Interface.............................10
2.1 Model and Naming Conventions................................10
2.1.1 Types of Endpoints..........................................10
2.1.2 Endpoint Identifiers........................................14
2.1.3 Calls and Connections.......................................16
2.1.4 Names of Call Agents and Other Entities.....................22
2.1.5 Digit Maps..................................................23
2.1.6 Packages....................................................26
2.1.7 Events and Signals..........................................28
2.2 Usage of SDP................................................33
2.3 Gateway Control Commands....................................33
2.3.1 Overview of Commands........................................33
2.3.2 EndpointConfiguration.......................................36
2.3.3 NotificationRequest.........................................37
2.3.4 Notify......................................................44
2.3.5 CreateConnection............................................46
2.3.6 ModifyConnection............................................52
2.3.7 DeleteConnection (from the Call Agent)......................54
2.3.8 DeleteConnection (from the gateway).........................58
2.3.9 DeleteConnection (multiple connections from the Call Agent) 59
2.3.10 AuditEndpoint...............................................60
2.3.11 AuditConnection.............................................65
2.3.12 RestartInProgress...........................................66
2.4 Return Codes and Error Codes................................69
2.5 Reason Codes................................................74
2.6 Use of Local Connection Options and Connection Descriptors..75
2.7 Resource Reservations.......................................77
3. Media Gateway Control Protocol..............................77
Show full document text