RFC 3441 (rfc3441) - Page 2 of 50
Asynchronous Transfer Mode (ATM) Package for the Media Gateway Control Protocol (MGCP)
Alternative Format: Original Text Document
RFC 3441 ATM MGCP Package January 2003
11.0 Acknowledgements..............................................49
12.0 Author's Address..............................................49
13.0 Full Copyright Statement......................................50
1.0 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 BCP 14, RFC 2119.
MGCP identifiers are case-insensitive. This includes package names,
event names, local connection options and other elements of the MGCP
header.
2.0 Introduction
The Media Gateway Control Protocol or MGCP [36] is used to control
voice media gateways from external call control elements. Even
though the bearer network might be IP, ATM, TDM or a mix of these,
MGCP is transported over IP. Packages such as the MGCP CAS packages
[38] are modular sets of parameters such as connection options,
signal, event and statistics definitions that can be used to extend
it into specific contexts. A related, IP-based mechanism for the
description of ATM connections [18] has been generated by the IETF
MMUSIC group. Due to the IP-centric nature of all aspects of the
MGCP device control protocol, and for consistency with other MGCP
package definitions, it is desirable to publish the MGCP ATM package
in an IETF document.
MGCP [36] allows the auditing of endpoints for package versions
supported. The package version for the MGCP ATM package, as
specified in this document, is 0. Even if the ATM package is the
default package for some endpoints, the package prefix "atm" shall
not be omitted in local connection option names, event names, signal
names etc. If the ATM package is the default package for an
endpoint, it will be listed as the first package in the audit
response list. It is not necessary for the MGCP ATM package to be
the default package for ATM to be supported on an endpoint.
The ATM package in this document consists of Local Connection Options
(Section 3.0), Events and Signals (Section 4.0) and ATM Statistics
Parameters (Section 5.0). Section 6.1 has guidelines for consistency
in the use of Local Connection Options. Section 6.2 describes codec
and profile negotiation. Section 7.0 addresses security
considerations.
Kumar Informational