Hello all,

According to 3GPP specs, when 488 (warning + sdp) is received for the sent 
INVITE with SDP offer, a fresh INVITE has to be sent from IMS node with new 
offer contains the media codecs as received in 488 response.

Now in case of a SIP -> SIP call, IMS node sends outgoing SIP invite with offer 
and receives 488 response which contains warning header and SDP of 488 rsp 
contains the allowed set of media codecs + media port.

Is it possible to receive such a SDP of 488 without media port?
If the media port contained in response, what could be the possible use of it 
in IMS node?

Thanks for your help.

Thanks & Regards,
Saravanan E
We can't solve problems by using the same kind of thinking we used when we 
created them. - Albert Einstein


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