Hi All,

I have one query regarding signaling requirement for sigComp.

Section 5 of RFC 3486 states procedure to be followed at proxy on receiving
SIP response messages. It states "A proxy performing record-route inspects
the record-route header field in the response and the contact header field
in the request that triggered this response". It implies that proxy should
know the contact header field in the request message. But a stateless proxy
will not have any context of request message that triggered this response. 

My query is whether sigComp is meant to be supported only by state full
proxy or not? IMO, the modification of record-route described in this
paragraph can easily be done during forwarding request message itself.

Thanks for your help.

Regards
Prashant

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