[martini] martini-gin-08, question on public-gruu

Martien Huysmans <martien.huysmans@ericsson.com> Tue, 28 September 2010 07:32 UTC

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From: Martien Huysmans <martien.huysmans@ericsson.com>
To: "martini@ietf.org" <martini@ietf.org>
Date: Tue, 28 Sep 2010 09:33:08 +0200
Thread-Topic: martini-gin-08, question on public-gruu
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Subject: [martini] martini-gin-08, question on public-gruu
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Ch 7.1.1 describes that a UA behind a SIP-PBX can receive the following contact header

   Contact: <sip:line-1@>;

Assume this UA (UA1) send an INVITE to UA2 where UA1 includes in it's contact the above public GRUU.
Assume that UA1 and UA2 are both registered with the same SIP-PBX.
Next UA2 uses the above public GRUU in an out-of-dialog INVITE request to UA2. That INVITE would look like

INVITE sip:+12145550102@ssp.example.com;gr=urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6;sg=00:05:03:5e:70:a6 SIP/2.0

As the SIP-PBX is not authoritative for the ssp.example.com domain, the SIP-PBX will route the request to the SSP,
where the RURI is updated and the following INVITE is send to the SIP-PBX.

INVITE sip:+12145550102@;sg=00:05:03:5e:70:a6 SIP/2.0.

Is this how it will work?

Regards Martien

System Engineer

Ericssonstraat 2
5121 ML RIJEN, Netherlands
Phone +31 161 24 9941
Fax +31 (0)161 24 99 22
Mobile +31 6 5120 3734


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