RFC 2705 (rfc2705) - Page 2 of 134
Media Gateway Control Protocol (MGCP) Version 1
Alternative Format: Original Text Document
RFC 2705 Media Gateway Control Protocol (MGCP) October 1999
* The interface section presents a conceptual overview of the MGCP,
presenting the naming conventions, the usage of the session
description protocol SDP, and the procedures that compose MGCP:
Notifications Request, Notification, Create Connection, Modify
Connection, Delete Connection, AuditEndpoint, AuditConnection and
RestartInProgress.
* The protocol description section presents the MGCP encodings,
which are based on simple text formats, and the transmission
procedure over UDP.
* The security section presents the security requirement of MGCP,
and its usage of IP security services (IPSEC).
* The event packages section provides an initial definition of
packages and event names.
* The description of the changes made in combining SGCP 1.1 and IPDC
to create MGCP 1.0.
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
2. Media Gateway Control Interface ........................... 9
2.1. Model and naming conventions. ........................ 10
2.1.1. Types of endpoints .............................. 10
2.1.1.1. Digital channel (DS0) ...................... 11
2.1.1.2. Analog line ................................ 11
2.1.1.3. Annoucement server access point ............ 12
2.1.1.4. Interactive Voice Response access point .... 12
2.1.1.5. Conference bridge access point ............. 13
2.1.1.6. Packet relay ............................... 13
2.1.1.7. Wiretap access point ....................... 14
2.1.1.8. ATM "trunk side" interface. ................ 14
2.1.2. Endpoint identifiers ............................ 15
2.1.3. Calls and connections ........................... 17
2.1.3.1. Names of calls ............................. 20
2.1.3.2. Names of connections ....................... 20
2.1.3.3. Management of resources, attributes of ..... 20
2.1.3.4. Special case of local connections .......... 23
2.1.4. Names of Call Agents and other entities ......... 23
2.1.5. Digit maps ...................................... 24
2.1.6. Names of events ................................. 26
2.2. Usage of SDP ......................................... 29
2.3. Gateway Control Commands ............................. 30
Arango, et al. Informational