Standard rule applied here is - 1. You have sent INVITE with G711A. 2. In 183, you have received SDP (most probably mode=sendonly) and codec mentioned is G711A.
Hence you are ready to receive and play G711A payload (even this is allowed before you receive 183) Regards, Kamal -----Original Message----- From: sip-implementors-boun...@lists.cs.columbia.edu [mailto:sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of Rodriguez Merchan, Pedro Julian Sent: Thursday, March 18, 2010 4:51 PM To: Sip-implementors@lists.cs.columbia.edu Subject: [Sip-implementors] Managing sip Session progress 183. Hi, Im having some problems managing a softphone when receive a session Progress indication instead a Ringing message. My enviroment is : Analog--------FXO---FXS-------Asterisk---------------SIP-------------my softphone. Phone + TDM card When i make a call from my softphone we see this messages: |Time | 173.25.3.23 | | | | 173.25.3.33 | |14,629 | INVITE SDP ( g711A GSM) |SIP From: sip:10...@173.25.3.33:5060 To:sip:916269...@173.25.3.33:5060 | |(5060) ------------------> (5060) | |14,630 | 100 Trying| |SIP Status | |(5060) <------------------ (5060) | |17,890 | 183 Session Progress SDP ( g711A) |SIP Status | |(5060) <------------------ (5060) | |17,890 | RTP (g711A) |RTP Num packets:1058 Duration:21.138s SSRC:0x3FFE0FFF | |(1393) <------------------ (10582) | |18,171 | 200 OK SDP ( g711A) |SIP Status | |(5060) <------------------ (5060) | |19,170 | 200 OK SDP ( g711A) |SIP Status | |(5060) <------------------ (5060) | |20,170 | 200 OK SDP ( g711A) |SIP Status | |(5060) <------------------ (5060) | |20,675 | ACK | |SIP Request | |(5060) ------------------> (5060) | The RTP that you can see is an in band tone signaling. This is the reason to receive an RTP before the 200 OK message. My question is the next: What must i do when i receive the SESSION PROGRESS instead the RINGING? Is there any operative defined for this case anywhere ¿ I see that others comercial phone manage this case ok as you see here, but i want a Standard answer. |Time | 173.25.3.23 | | | | 173.25.3.33 | |13,126 | INVITE SDP ( g711A telephone-event) |SIP From: sip:10...@173.25.3.33 To:sip:916269...@173.25.3.33 | |(42476) ------------------> (5060) | |13,127 | 100 Trying| |SIP Status | |(42476) <------------------ (5060) | |16,387 | 183 Session Progress SDP ( g711A telephone-eve... |SIP Status | |(42476) <------------------ (5060) | |16,387 | RTP (g711A) |RTP Num packets:1995 Duration:39.877s SSRC:0x5BD74EFB | |(25792) <------------------ (10590) | |16,422 | RTP (g711A) |RTP Num packets:23 Duration:0.429s SSRC:0x7B1CFD63 | |(25792) ------------------> (10590) | |16,867 | 200 OK SDP ( g711A telephone-event) |SIP Status | |(42476) <------------------ (5060) | |16,872 | RTP (g711A) |RTP Num packets:1963 Duration:39.240s SSRC:0x7B1CFD63 | |(25792) ------------------> (10590) | |17,072 | ACK | |SIP Request | |(42476) ------------------> (5060) | |56,275 | BYE | |SIP Request | |(42476) ------------------> (5060) | |56,276 | 200 OK | |SIP Status | |(42476) <------------------ (5060) | Thank you , very much. Pedro Julián Rodríguez Transporte Ferroviario C/ Mar Egeo 4, 1ª Planta C.P. 28830 San Fernando de Henares Madrid (España) T +34 916 269 814 T +34 916 269 250 F +34 916 268 868 pjrmerc...@indra.es www.indra.es _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
