[Freeswitch-users] Media Not Heard When Bridging 2 Calls with same Gateway

Thu Aug 20 06:00:52 PDT 2009

Hi

How are you bridging the calls in FS (which api call or C function are  
you using)?

Mathieu Rene
Avant-Garde Solutions Inc
Office: + 1 (514) 664-1044 x100
Cell: +1 (514) 664-1044 x200
mrene at avgs.ca

On 20-Aug-09, at 3:29 AM, Matthew Fong wrote:

> I'm trying to get FreeSWITCH to bridge two channels together through  
> the same external gateway, but I'm having issues hearing audio. Both  
> legs if setup independently and forwarded to 5000 (test ivr) work  
> fine for both inbound and outbound media, but when I try to bridge  
> them together, everything seems fine in FreeSWITCH, but neither  
> party can hear the other speak. I'm thinking the external gateway  
> might be having some issues because I've been able to bridge 2  
> channels together through the same gateway on different providers,  
> but thought I'd also try to seek some help here. FreeSWITCH should  
> be handling the media for both channels, so I can't figure out why  
> if Leg A and Leg B work independently, but not if they are bridged  
> together. Is there a setting somewhere in FS that I'm missing?
>
> Below is a ngrep of the SIP interactions if it's useful. Thanks for  
> the help.
>
> --matt
>
> interface: eth0 (172.24.200.0/255.255.255.0)
> filter: (ip or ip6) and ( port 5060 )
>
> U 2009/08/20 07:11:34.038686 216.81.56.198:5080 -> 38.98.58.148:5060
> INVITE sip:914159927717 at 38.98.58.148 SIP/2.0.
> Via: SIP/2.0/UDP 216.81.56.198:5080;rport;branch=z9hG4bK2gvHUU5aXjXZg.
> Max-Forwards: 70.
> From: "FreeSWITCH" <sip:0000000000 at 216.81.56.198>;tag=ZtFvjeFQmXvpp.
> To: <sip:914159927717 at 38.98.58.148>.
> Call-ID: 88c12fa5-07fb-122d-cc93-00e0813368fe.
> CSeq: 119257811 INVITE.
> Contact: <sip:gw+epik.com at 216.81.56.198:5080;transport=udp>.
> User-Agent: FreeSWITCH-mod_sofia/1.0.trunk-14417.
> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, PRACK, MESSAGE, SUBSCRIBE,  
> NOTIFY, REFER, UPDATE, REGISTER, INFO.
> Supported: timer, precondition, path, replaces.
> Allow-Events: talk, refer.
> Content-Type: application/sdp.
> Content-Disposition: session.
> Content-Length: 293.
> Remote-Party-ID: "FreeSWITCH" <sip: 
> 0000000000 at 216.81.56.198>;party=calling;screen=yes;privacy=off.
> .
> v=0.
> o=FreeSWITCH 1250727594 1250727595 IN IP4 216.81.56.198.
> s=FreeSWITCH.
> c=IN IP4 216.81.56.198.
> t=0 0.
> m=audio 24700 RTP/AVP 0 8 3 101 13.
> a=rtpmap:0 PCMU/8000.
> a=rtpmap:8 PCMA/8000.
> a=rtpmap:3 GSM/8000.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-16.
> a=rtpmap:13 CN/8000.
> a=ptime:20.
>
>
> U 2009/08/20 07:11:34.128331 38.98.58.148:5060 -> 216.81.56.198:5080
> SIP/2.0 100 Trying.
> From: "FreeSWITCH" <sip:0000000000 at 216.81.56.198>;tag=ZtFvjeFQmXvpp.
> To: <sip:914159927717 at 38.98.58.148>;tag=F725.2C49.
> Call-ID: 88c12fa5-07fb-122d-cc93-00e0813368fe.
> CSeq: 119257811 INVITE.
> Via: SIP/2.0/UDP 216.81.56.198:5080;rport;branch=z9hG4bK2gvHUU5aXjXZg.
> Contact: <sip:914159927717 at 38.98.58.148:5060>.
> Content-Length: 0.
> .
>
>
> U 2009/08/20 07:11:34.338105 38.98.58.148:5060 -> 216.81.56.198:5080
> SIP/2.0 183 Session Progress.
> From: "FreeSWITCH" <sip:0000000000 at 216.81.56.198>;tag=ZtFvjeFQmXvpp.
> To: <sip:914159927717 at 38.98.58.148>;tag=F725.2C49.
> Call-ID: 88c12fa5-07fb-122d-cc93-00e0813368fe.
> CSeq: 119257811 INVITE.
> Via: SIP/2.0/UDP 216.81.56.198:5080;rport;branch=z9hG4bK2gvHUU5aXjXZg.
> Contact: <sip:914159927717 at 38.98.58.148:5060>.
> Allow:  
> INVITE 
> ,BYE 
> ,INFO,PRACK,CANCEL,ACK,OPTIONS,SUBSCRIBE,NOTIFY,REGISTER,REFER,UPDATE.
> Content-Type: application/sdp.
> Content-Length: 227.
> .
> v=0.
> o=BroadSoft 23178 23178 IN IP4 10.10.10.11.
> s=M6 Call.
> c=IN IP4 38.98.58.148.
> t=0 0.
> m=audio 42554 RTP/AVP 0 101.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-15.
> a=ptime:20.
> a=sendrecv.
> a=rtcp:6461 IN IP4 10.10.24.50.
>
>
> U 2009/08/20 07:11:42.239312 38.98.58.148:5060 -> 216.81.56.198:5080
> SIP/2.0 200 OK.
> From: "FreeSWITCH" <sip:0000000000 at 216.81.56.198>;tag=ZtFvjeFQmXvpp.
> To: <sip:914159927717 at 38.98.58.148>;tag=F725.2C49.
> Call-ID: 88c12fa5-07fb-122d-cc93-00e0813368fe.
> CSeq: 119257811 INVITE.
> Via: SIP/2.0/UDP 216.81.56.198:5080;rport;branch=z9hG4bK2gvHUU5aXjXZg.
> Contact: <sip:914159927717 at 38.98.58.148:5060>.
> Session-Expires: 1800;refresher=uas.
> Allow:  
> INVITE 
> ,BYE 
> ,INFO,PRACK,CANCEL,ACK,OPTIONS,SUBSCRIBE,NOTIFY,REGISTER,REFER,UPDATE.
> Supported: timer.
> Content-Type: application/sdp.
> Content-Length: 227.
> .
> v=0.
> o=BroadSoft 23178 23178 IN IP4 10.10.10.11.
> s=M6 Call.
> c=IN IP4 38.98.58.148.
> t=0 0.
> m=audio 42554 RTP/AVP 0 101.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-15.
> a=ptime:20.
> a=sendrecv.
> a=rtcp:6461 IN IP4 10.10.24.50.
>
>
> U 2009/08/20 07:11:42.240828 216.81.56.198:5080 -> 38.98.58.148:5060
> ACK sip:914159927717 at 38.98.58.148:5060 SIP/2.0.
> Via: SIP/2.0/UDP 216.81.56.198:5080;rport;branch=z9hG4bK3SNaXppetUKjc.
> Max-Forwards: 70.
> From: "FreeSWITCH" <sip:0000000000 at 216.81.56.198>;tag=ZtFvjeFQmXvpp.
> To: <sip:914159927717 at 38.98.58.148>;tag=F725.2C49.
> Call-ID: 88c12fa5-07fb-122d-cc93-00e0813368fe.
> CSeq: 119257811 ACK.
> Contact: <sip:gw+epik.com at 216.81.56.198:5080;transport=udp>.
> Content-Length: 0.
> .
>
>
> U 2009/08/20 07:11:42.245678 216.81.56.198:5080 -> 38.98.58.148:5060
> INVITE sip:914154650027 at 38.98.58.148 SIP/2.0.
> Via: SIP/2.0/UDP 216.81.56.198:5080;rport;branch=z9hG4bK42e3yH7HQ494Q.
> Max-Forwards: 70.
> From: "FreeSWITCH" <sip:0000000000 at 216.81.56.198>;tag=038mm9ZtH6j9H.
> To: <sip:914154650027 at 38.98.58.148>.
> Call-ID: 8da57c9a-07fb-122d-cc93-00e0813368fe.
> CSeq: 119257815 INVITE.
> Contact: <sip:gw+epik.com at 216.81.56.198:5080;transport=udp>.
> User-Agent: FreeSWITCH-mod_sofia/1.0.trunk-14417.
> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, PRACK, MESSAGE, SUBSCRIBE,  
> NOTIFY, REFER, UPDATE, REGISTER, INFO.
> Supported: timer, precondition, path, replaces.
> Allow-Events: talk, refer.
> Content-Type: application/sdp.
> Content-Disposition: session.
> Content-Length: 293.
> Remote-Party-ID: "FreeSWITCH" <sip: 
> 0000000000 at 216.81.56.198>;party=calling;screen=yes;privacy=off.
> .
> v=0.
> o=FreeSWITCH 1250727504 1250727505 IN IP4 216.81.56.198.
> s=FreeSWITCH.
> c=IN IP4 216.81.56.198.
> t=0 0.
> m=audio 24798 RTP/AVP 0 8 3 101 13.
> a=rtpmap:0 PCMU/8000.
> a=rtpmap:8 PCMA/8000.
> a=rtpmap:3 GSM/8000.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-16.
> a=rtpmap:13 CN/8000.
> a=ptime:20.
>
>
> U 2009/08/20 07:11:42.333184 38.98.58.148:5060 -> 216.81.56.198:5080
> SIP/2.0 100 Trying.
> From: "FreeSWITCH" <sip:0000000000 at 216.81.56.198>;tag=038mm9ZtH6j9H.
> To: <sip:914154650027 at 38.98.58.148>;tag=F72E.2D4E.
> Call-ID: 8da57c9a-07fb-122d-cc93-00e0813368fe.
> CSeq: 119257815 INVITE.
> Via: SIP/2.0/UDP 216.81.56.198:5080;rport;branch=z9hG4bK42e3yH7HQ494Q.
> Contact: <sip:914154650027 at 38.98.58.148:5060>.
> Content-Length: 0.
> .
>
>
> U 2009/08/20 07:11:42.514501 38.98.58.148:5060 -> 216.81.56.198:5080
> SIP/2.0 183 Session Progress.
> From: "FreeSWITCH" <sip:0000000000 at 216.81.56.198>;tag=038mm9ZtH6j9H.
> To: <sip:914154650027 at 38.98.58.148>;tag=F72E.2D4E.
> Call-ID: 8da57c9a-07fb-122d-cc93-00e0813368fe.
> CSeq: 119257815 INVITE.
> Via: SIP/2.0/UDP 216.81.56.198:5080;rport;branch=z9hG4bK42e3yH7HQ494Q.
> Contact: <sip:914154650027 at 38.98.58.148:5060>.
> Allow:  
> INVITE 
> ,BYE 
> ,INFO,PRACK,CANCEL,ACK,OPTIONS,SUBSCRIBE,NOTIFY,REGISTER,REFER,UPDATE.
> Content-Type: application/sdp.
> Content-Length: 225.
> .
> v=0.
> o=BroadSoft 2035 2035 IN IP4 10.10.10.11.
> s=M6 Call.
> c=IN IP4 38.98.58.148.
> t=0 0.
> m=audio 46520 RTP/AVP 0 101.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-15.
> a=ptime:20.
> a=sendrecv.
> a=rtcp:6451 IN IP4 10.10.24.50.
>
>
> U 2009/08/20 07:11:46.190607 38.98.58.148:5060 -> 216.81.56.198:5080
> SIP/2.0 200 OK.
> From: "FreeSWITCH" <sip:0000000000 at 216.81.56.198>;tag=038mm9ZtH6j9H.
> To: <sip:914154650027 at 38.98.58.148>;tag=F72E.2D4E.
> Call-ID: 8da57c9a-07fb-122d-cc93-00e0813368fe.
> CSeq: 119257815 INVITE.
> Via: SIP/2.0/UDP 216.81.56.198:5080;rport;branch=z9hG4bK42e3yH7HQ494Q.
> Contact: <sip:914154650027 at 38.98.58.148:5060>.
> Session-Expires: 1800;refresher=uas.
> Allow:  
> INVITE 
> ,BYE 
> ,INFO,PRACK,CANCEL,ACK,OPTIONS,SUBSCRIBE,NOTIFY,REGISTER,REFER,UPDATE.
> Supported: timer.
> Content-Type: application/sdp.
> Content-Length: 225.
> .
> v=0.
> o=BroadSoft 2035 2035 IN IP4 10.10.10.11.
> s=M6 Call.
> c=IN IP4 38.98.58.148.
> t=0 0.
> m=audio 46520 RTP/AVP 0 101.
> a=rtpmap:101 telephone-event/8000.
> a=fmtp:101 0-15.
> a=ptime:20.
> a=sendrecv.
> a=rtcp:6451 IN IP4 10.10.24.50.
>
>
> U 2009/08/20 07:11:46.191161 216.81.56.198:5080 -> 38.98.58.148:5060
> ACK sip:914154650027 at 38.98.58.148:5060 SIP/2.0.
> Via: SIP/2.0/UDP 216.81.56.198:5080;rport;branch=z9hG4bK5B8U0crNmD0QK.
> Max-Forwards: 70.
> From: "FreeSWITCH" <sip:0000000000 at 216.81.56.198>;tag=038mm9ZtH6j9H.
> To: <sip:914154650027 at 38.98.58.148>;tag=F72E.2D4E.
> Call-ID: 8da57c9a-07fb-122d-cc93-00e0813368fe.
> CSeq: 119257815 ACK.
> Contact: <sip:gw+epik.com at 216.81.56.198:5080;transport=udp>.
> Content-Length: 0.
> .
>
>
> U 2009/08/20 07:11:55.139274 38.98.58.148:5060 -> 216.81.56.198:5080
> BYE sip:gw+epik.com at 216.81.56.198:5080 SIP/2.0.
> From: <sip:914159927717 at 38.98.58.148>;tag=F725.2C49.
> To: "FreeSWITCH" <sip:0000000000 at 216.81.56.198>;tag=ZtFvjeFQmXvpp.
> Call-ID: 88c12fa5-07fb-122d-cc93-00e0813368fe.
> CSeq: 4817 BYE.
> Max-Forwards: 70.
> Via: SIP/2.0/UDP  
> 38.98.58.148:5060;branch=z9hG4bK4A8C.F725.2C494819.943A6226.00000BC3.
> Via: SIP/2.0/UDP 10.10.10.11:5060;branch=z9hG4bK4A8C.F725.2C494819.
> Contact: <sip:914159927717 at 38.98.58.148:5060>.
> Allow:  
> INVITE 
> ,BYE 
> ,INFO,PRACK,CANCEL,ACK,OPTIONS,SUBSCRIBE,NOTIFY,REGISTER,REFER,UPDATE.
> Content-Length: 0.
> .
>
>
> U 2009/08/20 07:11:55.140390 216.81.56.198:5080 -> 38.98.58.148:5060
> SIP/2.0 200 OK.
> Via: SIP/2.0/UDP  
> 38.98.58.148:5060;branch=z9hG4bK4A8C.F725.2C494819.943A6226.00000BC3.
> Via: SIP/2.0/UDP 10.10.10.11:5060;branch=z9hG4bK4A8C.F725.2C494819.
> From: <sip:914159927717 at 38.98.58.148>;tag=F725.2C49.
> To: "FreeSWITCH" <sip:0000000000 at 216.81.56.198>;tag=ZtFvjeFQmXvpp.
> Call-ID: 88c12fa5-07fb-122d-cc93-00e0813368fe.
> CSeq: 4817 BYE.
> User-Agent: FreeSWITCH-mod_sofia/1.0.trunk-14417.
> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, PRACK, MESSAGE, SUBSCRIBE,  
> NOTIFY, REFER, UPDATE, REGISTER, INFO.
> Supported: timer, precondition, path, replaces.
> Content-Length: 0.
> .
>
>
> U 2009/08/20 07:11:55.145438 216.81.56.198:5080 -> 38.98.58.148:5060
> BYE sip:914154650027 at 38.98.58.148:5060 SIP/2.0.
> Via: SIP/2.0/UDP 216.81.56.198:5080;rport;branch=z9hG4bK6m1m278rHppaF.
> Max-Forwards: 70.
> From: "FreeSWITCH" <sip:0000000000 at 216.81.56.198>;tag=038mm9ZtH6j9H.
> To: <sip:914154650027 at 38.98.58.148>;tag=F72E.2D4E.
> Call-ID: 8da57c9a-07fb-122d-cc93-00e0813368fe.
> CSeq: 119257816 BYE.
> Contact: <sip:gw+epik.com at 216.81.56.198:5080;transport=udp>.
> User-Agent: FreeSWITCH-mod_sofia/1.0.trunk-14417.
> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, PRACK, MESSAGE, SUBSCRIBE,  
> NOTIFY, REFER, UPDATE, REGISTER, INFO.
> Supported: timer, precondition, path, replaces.
> Reason: Q.850;cause=16;text="NORMAL_CLEARING".
> Content-Length: 0.
> .
>
>
> U 2009/08/20 07:11:55.232064 38.98.58.148:5060 -> 216.81.56.198:5080
> SIP/2.0 200 OK.
> From: "FreeSWITCH" <sip:0000000000 at 216.81.56.198>;tag=038mm9ZtH6j9H.
> To: <sip:914154650027 at 38.98.58.148>;tag=F72E.2D4E.
> Call-ID: 8da57c9a-07fb-122d-cc93-00e0813368fe.
> CSeq: 119257816 BYE.
> Via: SIP/2.0/UDP 216.81.56.198:5080;rport;branch=z9hG4bK6m1m278rHppaF.
> Contact: <sip:914154650027 at 38.98.58.148:5060>.
> Allow:  
> INVITE 
> ,BYE 
> ,INFO,PRACK,CANCEL,ACK,OPTIONS,SUBSCRIBE,NOTIFY,REGISTER,REFER,UPDATE.
> Content-Length: 0.
> .
> _______________________________________________
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