Dear Colleagues,

The gateway audio call will be tomorrow Oct 20th from 11AM - 1PM EDT.

The dial in numbers are:

From the US: 1-800-857-5018 From outside the US: 1-712-271-0925

The Confirmation Number is: 2304944 Passcode: Mark Reid

Let me know if you have any questions or problems,

Mark Reid VideoServer Inc 1-781-505-2368

    -----Original Message-----
    From:   Mark Reid [SMTP:mreid@VIDEOSERVER.COM]
    Sent:   Friday, October 16, 1998 4:53 PM
    To:     ITU-SG16@mailbag.cps.intel.com
    Subject:

    Dear Colleagues,

    I would like to invite you to participate in an audio call,

Tuesday October 20th from 11AM to 1PM EST to discuss our work plan for the study of gateway decomposition as outlined in TD 89 (WP2).

    The goals of the audio call will be to identify what work items we

need to completed and in what order should we attack them. Once we have an agreed to work plan, we can talk about building an architecture document and the specific requirements of each interface.

    As a place to start the discussions, I think we need the following
    (referenced to TD 89):

    New Protocols:
    *****************
    Interface A - Device Control Interface

    New H.246 Annexes:
    ************************
    1) H.323 to Voice/Voiceband Terminals = The breakdown of the

media. How DTMF is converted to/from UserInputIndication messages, etc. (There is a draft of this in the current H.246 Annex B) 2) H.323 to SS7 (Similar to Q.699 - a Q.931 to ISUP conversion spec) 3) H.323 to Q.931 (Similar to the section in Annex A for H.320)

    Interface B, C, D
    ********************
    For the Proposed Interfaces B, C, and D. Given that the messages

passing across these interfaces must reflect all of the content of the signaling that the respective signaling functions receive from and send to extern entities, aren't these protocols modified or extended ISUP for Interface D, modified or extended Q.931 for Interface C, and modified or extended H.225 for Interface B? For C & D, can they be the real protocols if carried on a T1 and some derivation of them if running over TCP/IP?

    Please try and get all attendee requests in by Monday the 19th at

12:00 Noon EST so that I can make the proper arrangements. I will send port assignments later that day. Here is a summary of attendees so far:

    1) G. Thom
    2) S. Nayak
    3) R. Badri
    4) P Kallur
    5) K. Hedayat
    6) R Spitzer
    7) R Chopra
    8) A Amir
    9) R Even
    10) H Liu
    11) J Yeh
    12) R Radhika
    13) B Bell
    14) T Taylor
    15) G Freundlich
    16) M Reid/B Hill/G Kajos

    All comments welcome,

    Mark Reid
    1-781-505-2368
    mreid@videoserver.com

    Bryan Hill
    1-781-505-2159
    bhill@videoserver.com