[SIPForum-discussion] doubt in Example-3.7 of RFC 3665

[pankaj jain]

Hi,
I was going through RFC 3665 -- Basic Call Flow Examples: 3.7 - Session with
re-INVITE (IP Address
Change)<http://www.tech-invite.com/SIP/3665/Ti-SIP%203665-3.7%20%28v1.1%29.pdf>
The CSeq header in 1st INVITE (Alice to Bob) is 1
The CSeq header in 2nd INVITE (Bob to Alice) is 14
and The CSeq header in BYE (Alice to Bob) is 2

My questions are:
Shouldn't CSeq be monotonically increasing in a call?
is CSeq similar to TCP seq number where both parties maintain their own
sequence numbers?

-- 
Thanks
Pankaj Jain
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