Subject: Re: [Sip] Contact header for PSTN 2 IP call

From: "Jitender Arora" <[email-masked]>
Date: Mon, 23 Dec 2002 11:26:26 -0500

Hi ,

          Assume that u are using the ISUP on the PSTN side , so on recieving the IAM ,at the Media Gateway u find that this is a SIP call ( PhonetoNet call) ...

           U will send an invite out to the SIP Proxy ,with following content ....

           INVITE sip:phonenumber@host ( Host will depend on the Proxy , to which u are sending the Request and how your proxy is configured to )
           From :  sip:Mediagatewayname@host

           Similarly other headers are also required ......

           The contact will be :

            contact:sip:Mediagatewayname@host:portnumber

Regards,
Jitender
 
--

On Mon, 23 Dec 2002 11:03:17  
 Rinchen Tundup wrote:
>
>Hi,
>I have a question ! What will be the contact header in the sip message
>when an PSTN to IP call is made via a media gateway ? Since PSTN phone
>is not a SIP entity and cannot have a SIP URI.
>Should it be sip:[email-masked]? or something else?
>pls help
>
>
>Rinchen
>
>
>
>--
>Rinchen Tundup
>
>
>

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