[SIPForum-discussion] Hi

[Singh, Indresh (SNL US)]

-----Original Message-----
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Taduru Hariprasad
Sent: Friday, March 30, 2007 5:20 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] Hi

Hi,

I started to learn sip. Currently going thru rfc 3261. Can i have th
answers for the
following doubts.

1) BRANCH and CSeq parameters will get change for every transaction?

>> Yes. 

2) How Ack is treated as one transaction if the final response is 200-ok
for
   an INVITE?

>> Yes. But it is a unique transaction and it's cseq is same as
INVITE-200OK. Just the branch-identifier is different.

3) How to detect loops and overcome them?

>> By checking if the ipAddress of your box is there in one of the i/c
via headers. But after this you have to differentiate between loop and
spiraling before you can say loop detected. 

And also please mension/attach the docs if you have for my referrence.

>> Everything in RFC-3261 :)

Thanks
Hari
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