Network Access Serve & Voice on IP Device Control
charter-ietf-navdec-01

This BOF will explore the possibility of establishing a navdec working
group.  The proposed charter for the working group follows: 

The working group will develop an informational RFC detailing the
architecture and requirements for controlling PSTN (Public Switched
Telephone Network) Media Gateways from external control elements such as
a media gateway controller. A PSTN media gateway is a network element
that provides conversion between the audio information carried on
telephone circuits and data packets carried over the Internet or over
other packet networks.  This work will be done in consultation with
other IETF working groups looking at similar issue.  The working group
will also ensure that good information conduits exist with groups in
other standards groups with expertise in the relevant PSTN technology.

This working group will also define standards track protocol(s) for
controlling PSTN (Public Switched Telephone Network) Media Gateways from
external control elements such as a media gateway controller.

Examples of PSTN media gateways are:
  * Trunking gateways that interface between the telephone network and
a Voice over IP network. Such gateways typically manage a large
number of digital virtual circuits.
  * Access gateway that provide traditional analog or PRI line
interfaces to a Voice over IP network.
  * Network Access Servers that can attach a "modem" to a telephone
circuit and provide data access to the Internet.

This working group assumes a separation of call control where there is
call control "intelligence" outside the media gateways that is handled
by a media gateway controller. This allows for scalability and
simplified management: many media gateways within a domain can be
controlled by one media gateway controller.

This group will NOT work on media gateway controller to media gateway
controller protocols, nor on media gateway to media gateway protocols.