[SIPForum-discussion] Is there any way to distinguish between a new REGISTER message and a refreshing REGISTER message?

[Kunal Narula]

Yes, cseq number will increase count by one as re-registering message is a
new transaction.

On Wed, Oct 28, 2015 at 5:53 PM, Ugo <ugogio87 at gmail.com> wrote:

> Is there any way to distinguish between a new REGISTER message and a
> refreshing REGISTER message?
>
> I have noticed that in some scenarios I can identify a REGISTER message
> which represents a refresh of the user registration through the parameter
> "expires=0" of the Contact header.  However, this does not work when the
> REGISTER message to refresh a user registration is similar to a new
> registration message.
>
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> *Ugo Giordano, Ph.D. Student*
> Department of Electrical Engineering and  Information Technologies
> University of Naples "Federico II"
> Via Claudio, 21 - 80125 Napoli - Italy
>
> Institutional e-mail: ugo.giordano at unina.it
> *Skype: *ugo.giordano87
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-- 
GOD BLESS U
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