FastStart and payload size

Francois Audet audet at NORTELNETWORKS.COM
Fri Mar 10 13:35:11 EST 2000

For those who may have missed it, here is the official announcement
of the BOF.

Dave Walker
SS8 Networks
Ottawa, Canada

-----Original Message-----
From: mbeaulie at [mailto:mbeaulie at]On
Behalf Of ietf-secretariat at
Subject: 47th IETF: SIP323 BOF

SIP and H.323 Interworking BOF (sip323)

Monday, March 27 at 1300-1500

CHAIRS: Joon Maeng <joon_maeng at>
        Dave Walker <drwalker at>


There are two competing standards in the industry for establishing and
managing real-time interactive media communications over IP.  One is the
proposed IETF standard, Session Initiation Protocol (RFC 2543), and the
other is the ITU recommendation, H.323.  Although they use the same
protocol (RTP) for media streaming, they cannot establish calls between
them.  In the absence of any formal interoperability standards, many
vendors are beginning to develop proprietary application gateways for
interworking between SIP and H.323.

In order to provide interoperability between the two standards, it is
urgent to define a common interworking specifications for the industry.
The recognition of the need for this interworking specification has lead
to calls for its development from both manufacturers and service
providers, individually and through industry consortia (such as IMTC)
and other bodies concerned with interoperability (such as ETSI).

In this BOF, we are going to discuss SIP and H.323 interworking issues,
execution plans and the scope of the work.


- Do we need SIP-H.323 interworking?
- Coordination with other groups?
- Scope of interworking
- Outcome of the work?
- Suggestions?

Helpful reading:
    - draft-singh-sip-h323-00.txt
    - SIP: Session Initiation Protocol (RFC 2543)
    - SDP: Session Description Protocol (RFC 2327)
    - ITU recommendations: H.323, H.225.0, H.245

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