[SIPForum-discussion] doubt about "contact field"

[Knupp, Varlei Fernandes]

Hi to all,

I have a doubt about "contact field".

The proxy send a "INVITE" message =INVITE sip:33133010 at 192.168.2.100:5060 SIP/2.0 to Gateway

The gateway send  a "session progress" message to proxy, but this message has contact field = Contact: <sip:1100 at 192.168.2.100>

The User disconnect the call.

The proxy send a "CANCEL" message to gateway = CANCEL sip:1100 at 192.168.2.100:5060 SIP/2.0 

So the gateway reject the message.

Who is correct?
- The Gateway because reject the call because the proxy changed the header in the message CANCEL
- The Proxy because when the gateway sent contact field = <sip:1100 at 192.168.2.100> the header CANCEL message now is  CANCEL sip:1100 at 192.168.2.100:5060 SIP/2.0.

thanks a lot


Varlei Fernandes Knupp

SIEMENS Communications

Customer Services Enterprise

RCC São Paulo - Technical Support

Tel.: +55 11 3817 2659

Fax: +55 11 3817 2613

varlei.knupp at siemens.com <blocked::mailto:varlei.knupp at siemens.com>




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