When are MGCP messages required? 

In order to create RTP streams, is it not mandatory that CRCX happens once
SIP INVITE is initiated? How does this work?

I captured ethereal traces of a normal SIP call flow on machine A. I could
see RTP messages but not MGCP messages. Is it fine?

The Connection Information parameter in the SDP had machine A's ip address
and I could see that RTP messages also use the same port specified in the
"m" line.

 

Regards,

Sunil

 

 

 

 

 

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