ITU/IETF audio call announcement

Bryan Hill bhill at VIDEOSERVER.COM
Thu Mar 25 17:39:45 EST 1999

Note change in passcode!!!

The new passcode: 131313#

Sorry for any confusion. . . .

		-----Original Message-----
		From:	Bryan Hill 
		Sent:	Thursday, March 25, 1999 9:22 AM
		To:	ITU-SG16 (E-mail)
		Subject:	ITU/IETF audio call announcement

		To IETF Megaco participants, and ITU-T SG16 participants,
		As most of you know, both the IETF and the ITU have working
groups defining a device control protocol to be used between a media gateway
controller and a media gateway. In ETSI-Tiphon, this is called the
N-interface. Since November, there have been two different proposals on the
table in both Megaco and in the SG16 group (MGCP and MDCP). There has also
been a compromise proposal - MGCP-modified. MGCP and MDCP differ in many
areas, the main one being the connection model.
		A goal shared by many, is to coordinate the Megaco work with
the SG16 H.gcp work, and even to end up with ONE protocol, not two.
		At the Monterey ITU meeting, the MGCP/MDCP debate was
directed at the connection model, and at the IETF meeting in Minneapolis
last week, these debates continued. A design team was formed of authors of
MGCP, MDCP, and MGCP-modified. Brian Hill, the H.GCP editor and Glen
Freundlich were also present from SG16. The different connection models were
presented, discussed, dissected... and we ended up inventing brand new
terminology to allow us to explain a new connection model. While the terms
context and termination may not seem clear at first, they do allow us to
look at the problem anew, without the baggage of other proposals getting in
the way.  Brian Rosen presented the new connection model to the Megaco WG
last Tuesday (3/16), and to the ITU during the H.gcp audio call this past
Tuesday (3/23).  Since then, a group of us has been fleshing out the model,
defining commands, .... People from BOTH SG16 and the IETF have been
involved. The result is the megaco protocol internet-draft that will be out
this week, and sent to both the megaco at
<mailto:megaco at>  and the itu-sg16 at
<mailto:itu-sg16 at>  mailing lists.  
		This internet-draft should be seen as a **working draft** -
it has a good introduction to the new connection model, and provides
descriptions of the commands, but certain sections contain editor notes that
document unresolved issues. And some sections may be left blank. Anyone who
would propose a different way to do something just needs to write it up and
send it to the mailing lists for discussion. 
		To foster collaboration, we are holding an audio call Monday
March 29th at 10am EST, to which all participants in megaco and SG16 are
invited. It will be a chance to air concerns and criticisms of the
internet-draft, so that working group chairs and document editors can get a
feel for the degree of agreement between the two groups. 
		*****The audio call cannot make any decisions. There will
certainly be people that won't be available for the call. 
		*****Comments sent to the mailing lists carry equal weight
to any discussions held in the audio call. 
		*****The minutes of the audio call will be published to the
mailing lists. 
		Ideally, the SG16 group would agree to as much of the
internet-draft as they can, and turn it into the current version of H.GCP.
The more we agree on between the two groups the better.
		DATE:	Monday, March 29/99
			TIME: 10amEST till 12pmEST
			NUMBER: 613-763-6338           
			PASSCODE: 131313#
			CHAIR: Nancy Greene

		problems joining? Call 613-765-CONF (613-765-2663)
		90 ports have been booked.
*	because of the potentially large # of people, no tones will be used
to mark people joining or leaving
*	to improve the voice quality, it is important to mute your phone
when you are not speaking - press 63 to mute, and 66 to unmute.

		Nancy Greene                          Bryan Hill
		ngreene at
<mailto:ngreene at>     bhill at
<mailto:bhill at>   


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