[Serusers] Parrallel forking using SER and Mediaproxy

[Ramu Yadav]

Hi all,

I am experiencing some problems while configuring SER in order to
fork between different contacts (a SIP UA and a SIP Gateway)  and passing
through a mediaproxy:

The scenario is the following: (3 calls)

UA1 -> SER : INVITE sip:ramu at xyz.com

SER forks:

SER -> UA2 : INVITE sip:ramu@[local-ip]     {SDP is changed by
mediaproxy module}
SER -> GW: INVITE sip:PSTN-NUMBER@[gateway-ip]   {SDP is changed by
mediaproxy module}
SER -> GW: INVITE sip:PSTN-NUMBER@[gateway-ip]   {SDP is changed by
mediaproxy module

GW -> SER: 183 Session Progress 
SER  -> UA1: 183 Session Progress {SDP is changed by mediaproxy module}   
Audio session with the mediaproxy is Active
GW  -> SER: 183 Session Progress 
SER  -> UA1: 183 Session Progress {SDP is changed by mediaproxy module}   
Audio session with the mediaproxy is Active
UA2 -> SER: 180 Ringing
SER -> UA1:  180 Ringing

UA2 -> SER: 200 OK 
SER -> UA1: 200 OK {SDP is changed by mediaproxy module}
Audio session with the mediaproxy is Active.
SER -> GW: CANCEL 
....

The call gets connected, but the problem is that the audio session is mute:  

onreply_route[1] {

    if (status=~"(183)|2[0-9][0-9]") {
        if (client_nat_test("1")) {
            fix_contact();
        };
        use_media_proxy();
    };

};

Can you help me on this ?

Thank you a lot in advance,

-- 
Ramu Yadav