FYI. Some work occuring on ISDN Gateways using Sigtran and Megaco.

Cheers, Christian

-------- Original Message -------- Subject: I-D ACTION:draft-bouwen-megaco-isdn-bcp-00.txt Date: Tue, 21 Nov 2000 05:53:36 -0500 From: Internet-Drafts@ietf.org Reply-To: Internet-Drafts@ietf.org To: IETF-Announce: ;

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A New Internet-Draft is available from the on-line Internet-Drafts directories.

Title : Best Current Practice for Megaco-Sigtran Interaction in ISDN Access Gateways Author(s) : J. Bouwen Filename : draft-bouwen-megaco-isdn-bcp-00.txt Pages : 10 Date : 20-Nov-00

A Media Gateway with ISDN terminations will use both Megaco [1] and Sigtran protocols for communication with the Media Gateway Controller. In an ISDN Access Gateway the media carrying B-channels are controlled by the Media Gateway Controller using Megaco, while the User-to-Network signalling running over the D-channels will be relayed to the Media Gateway Controller using Sigtran protocols (IUA [3] over SCTP [2]). At the moment, in the absence of appropriate specifications, the Megaco and Sigtran protocols may interact in different ways in the Access Gateway, leaving room for non-interoperable solutions. This draft proposes a set of guidelines for the Megaco-Sigtran interworking, documenting a best current practice for ISDN Access Gateways.

A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-bouwen-megaco-isdn-bcp-00.txt

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A New Internet-Draft is available from the on-line Internet-Drafts directories.

Title : Extensions to Megaco to support Data in an ISDN D-channel Author(s) : J. Bouwen Filename : draft-bouwen-megaco-isdn-data-00.txt Pages : Date : 20-Nov-00

In ISDN interfaces the D-channel is used to transport the Q.931 signalling messages. In addition, the D-channel can transport packet data for user-to-user communication. The Megaco protocol specification has to be extended to support data in an ISDN D- channel. More specifically, ephemeral terminations on top of physical ISDN terminations have to be allowed, and support for the ISDN addressing scheme has to be added to refer to the data streams in the D-channel. This draft defines the required additional functionality, that could be part of the second version of the Megaco protocol.

A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-bouwen-megaco-isdn-data-00.txt

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A New Internet-Draft is available from the on-line Internet-Drafts directories.

Title : ISDN Package for Megaco Author(s) : J. Bouwen Filename : draft-bouwen-megaco-isdn-pack-00.txt Pages : 5 Date : 20-Nov-00

This draft introduces a Megaco package to support voip access gateways with ISDN terminations. The package defines TerminationState properties for ISDN terminations, and events/signals that are to be used for the layer 1 activation/deactivation procedure for ISDN basic interfaces.

A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-bouwen-megaco-isdn-pack-00.txt

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