---------- Forwarded message ---------- From: Ramu Yadav contactramu@gmail.com Date: Jul 28, 2005 9:17 PM Subject: Parrallel forking using SER and Mediaproxy To: serusers@lists.iptel.org

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