[moved to the SIP implementors list!!]
Please, please, please start posting on the correct list.
Repeatedly choosing the wrong one makes it unlikely
that you will receive any further helpful responses.
Send "newbie" questions about SIP to SIP-implementors
You can find the info for that list here:
http://www.cs.columbia.edu/~hgs/sip/list.html
> Basically, I am concern about the statement
>
> "Typically, only the first request within a call traverses
> all proxies,
> while subsequent requests are exchanged directly between user agents"
After the initial request, and it's reponse, have passed
between the 2 end points they have enough information
about each other be able to exchange further requests
directly. This information is present in the Contact
header of the INVITE and 200 responses. If a proxy wants
to stay on the signalling path it adds an entry to the
Record-Route header when proxying.
Cheers,
Neil
--
Ubiquity Software Corporation, UK http://www.ubiquity.net
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