[SIPForum-discussion] very imp question about route & recordroute
William Prusty
williamp at TechMahindra.com
Mon Apr 23 08:06:25 UTC 2007
Thank a lot srinivas. Plz make me clarify one thing more
If A doesn't know IP address of p1 then how the invite
request will reached at B
________________________________
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Srinivas .
Sent: Monday, April 23, 2007 11:05 AM
To: mwilliam prusty; discussion at sipforum.org
Subject: Re: [SIPForum-discussion] very imp question about route &
recordroute
William my comments inline
________________________________
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of mwilliam prusty
Sent: Saturday, April 21, 2007 10:20 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] very imp question about route & record
route
can any body tell that
suppose the call setup is lke A p1 p2 B
here A is user agent client. B is user agent server. p1 & p2 are proxy.
1.let A has generated an INVITE request to B . in which case the invite
request generated by A will conatin ROUTE header field.????
[Srinivas] Generally , proxy P1 gets IP address of B from location
server also if there are any proxies in between.
Proxy P1 (generate INVITE) fills route and send INVITE.
User A can fill route set only if it knows the proxies between user A
and user B.
2. let p1 has rcved the INVITE request containg ROUTE heder field.
is it mandatory that the invite from point p1 to p2 will conatin RECORD
ROUTE heder field.????? if yes why if not why???
[Srinivas] In some cases, it may be useful for proxies in the SIP
signaling path to see all the messages pass between the endpoints for
the session. In that case it will add RECORD ROUTE. If it don't want to
be in the path, it will not add the RECORD ROUTE.
plz anser
diago sigline
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