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

[Robert Sparks]

The CSeq sequence is scoped to each endpoint (Alice keeps a  
monotonically increasing sequence and Bob keeps a _separate_  
monotonically increasing sequence in this dialog).

RjS

On Mar 21, 2007, at 10:34 AM, pankaj jain wrote:

> Hi,
> I was going through RFC 3665 -- Basic Call Flow Examples: 3.7 -  
> Session with re-INVITE (IP Address Change)
> 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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