Question on H.225- Annex G

Paul E. Jones paulej at PACKETIZER.COM
Wed Jun 7 02:28:52 EDT 2000


Archana,

That is certainly my interpretation:
 UDP Packet = {[TPKT][MESSAGE][TPKT][MESSAGE] ...}

Paul

----- Original Message -----
From: "Archana Nehru" <archie at TRILLIUM.COM>
To: <ITU-SG16 at mailbag.cps.intel.com>
Sent: Tuesday, June 06, 2000 5:24 PM
Subject: Question on H.225- Annex G


> hi all,
>
> I have a question about prefixing TPKT header to Annex-G messages sent
over
> UDP. Refer to section 1.8 of the Annex G specs which states:
>
> " In UDP IP implementations, messages shall also be prefixed with TPKT
> headers, to enable multiple messages per packet. The UDP packet length
field
> shall hold the total length of the payload, including all the messages and
> their TPKT headers."
>
> My interpretation of the above paragraph is the following:
> 1. ALL Annex-G messages (going over UDP) MUST be prefixed with
>    TPKT headers.
>
> 2. One UDP packet can contain multiple Annex-G messages and each one of
> these messages will have its OWN SEPARATE TPKT HEADER.
>
> Is this interpretation correct?
>
> I appreciate any help on this.
>
> Regards
> Archana
>
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