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Early media and remote ringback

edited Jan 14, 2013 3:11PM in Acme Packet (MOSC) 1 commentAnswered

Hi, 

 

I'm having some issues with early media and remote ringback from a sip-interconnect. The problem seems to be the lack of P-Early-Media header in the provisional response with SDP from the SIP-IC

 

Our MGC adds P-Early-Media:supported in the initial invite and remains in the invite sent to SIP-IC. In other call-scenarios the call traverse our AS and PEM-header is removed in that case remote-ringback works.

 

Also if I create a hmr to add PEM-header and apply it to in-manipulationid for the SIP-IC session-agent the remote ringback works.

 

So I wonder how SBC reacts if PEM is present I the initial invite but lacking in the provisional response?

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