Change of address

Jim Toga jim.toga at INTEL.COM
Sun Feb 28 15:50:16 EST 1999


Most of the work items are grundge work to start with.  I'm willing to
tackle them until I start to run into issues that need others' comment.  How
would you like to start on the H.245 abstraction (interface ?:e)?

> -----Original Message-----
> From: Rex Coldren [SMTP:coldrenr at AGCS.COM]
> Sent: Friday, February 26, 1999 7:36 PM
> To:   ITU-SG16 at MAILBAG.INTEL.COM
> Subject:      Re: Development of Decomposed Gateway Architecture
>
> Tom,
>    Sorry to respond so late to this.  In the interest of keeping my
> mailbox close
> to manageable I deal with the quickies first.  Has anyone responded to
> this or
> are you taking these work items on yourself?  I am wondering whether there
> is
> something here that you want me to tackle.
>
> Rex
>
> Tom-PT Taylor wrote:
>
> > This note is to point out the follow-up work required in the light of
> the
> > Monterey meeting's adoption of the revised Gateway functional
> architecture
> > as shown in TD-34 (Monterey).  I am prepared to contribute to that work.
> > People may wish to comment on the priorities of definition of the
> different
> > interfaces.
> >
> > First point: I followed up Bob Callaghan's pointers to the layer 4
> > interfaces applicable to our J:c interface (per the TD-34 definition).
> The
> > relevant references are the SDL charts shown in Annex A of Q.931 and
> Annex H
> > of Q.764 respectively.  These show  the messages exchanged over the J:c
> > interface for their respective protocols, but do not show their content.
> So
> > that's one work item.
> >
> > Second point: Annex A of Q.931 shows messages going between a Q.931
> Protocol
> > Control block and two higher blocks: Call Control and Resource Control
> > respectively.  Annex H of Q.764 is more complicated: it shows Call
> Control
> > above the ISUP User Part, but three blocks within it: Signalling
> Procedure
> > Control, Call Processing Control, and Circuit Supervision Control.  I
> think
> > we should have a Call Control block in our picture, at the same level as
> our
> > High-Layer Resource Control.  I also think the ISUP Circuit Supervision
> > Control should report into High-Layer Resource Control rather than Call
> > Control.
> >
> > Third point: the messaging on our ?:b interface can probably be derived
> from
> > the Q.931 SDL.  The content also has to be worked out.  Another couple
> of
> > work items.
> >
> > Final point: how to determine the content of the ?:e (abstracted H.245)
> > interface and where it should flow?  Definitely some detailed work items
> > here.
> >
> > Tom Taylor
> > E-mail: taylor at nortelnetworks.com  (internally Tom-PT Taylor)
> > Tel.: +1 613 765 4167     (internally 395-4167)
> > FAX: +1 613 763 7236     (internally 393-7236)



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