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