The eyebeam has referenced a private address in the SDP ( 172.16.114.1 ), it is my understanding that since this IP is not routable, you'll never get any audio. I believe the purpose of RTPProxy is to bridge calls that are behind private IPs.
I believe you'll need an RTP Proxy or Media Proxy to fully support crossing NATs. David On 10-06-20 06:50 AM, JinKevin wrote: > Hi, > > My kamailio and application server are with Public IPs so the system > uses nathelper without RTPProxy. It works with the eyebeam behind the > ADSL router, but I cannot hear any voice ( ethereal capture on the PC > shows no RTP from the application server) when try it in a Hotel or > with a 3G data card. Below is the SIP messages for the issue, is there > anyway can fix the issuse? > ============Start=========================== > UAC ----> NAT/Firewall(FW) > > INVITE sip:[email protected] SIP/2.0 > Via: SIP/2.0/UDP > 172.16.114.1:51828;branch=z9hG4bK-d8754z-3870be05b936bf38-1---d8754z-;rport > Max-Forwards: 70 > Contact: <sip:[email protected]:12461> > To: "videoConf"<sip:[email protected]> > From: "2001"<sip:[email protected]>;tag=db06e72d > Call-ID: NzYwMzhjOTc5NWJlY2Q5YzFiN2JlZGNjNDlkNzMyNmU. > CSeq: 1 INVITE > Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, > SUBSCRIBE, INFO > Content-Type: application/sdp > User-Agent: eyeBeam release 1102q stamp 51814 > Content-Length: 230 > v=0 > o=- 7 2 IN IP4 172.16.114.1 > s=CounterPath eyeBeam 1.5 > c=IN IP4 172.16.114.1 > t=0 0 > m=audio 27384 RTP/AVP 18 101 > a=fmtp:18 annexb=yes > a=fmtp:101 0-15 > a=rtpmap:18 G729/8000 > a=rtpmap:101 telephone-event/8000 > a=sendrecv > > NAT/FW ---> Kamailio(KAM) > INVITE sip:[email protected] SIP/2.0 > Via: SIP/2.0/UDP > 113.108.Z.1:13945;branch=z9hG4bK-d8754z-3870be05b936bf38-1---d8754z-;rport > Call-ID: NzYwMzhjOTc5NWJlY2Q5YzFiN2JlZGNjNDlkNzMyNmU. > From: "2001"<sip:[email protected]:12302>;tag=db06e72d > To: "videoConf"<sip:[email protected]> > CSeq: 1 INVITE > Max-Forwards: 70 > Contact: <sip:[email protected]:13202> > Allow: INVITE,ACK,CANCEL,OPTIONS,BYE,REFER,NOTIFY,MESSAGE,SUBSCRIBE,INFO > User-Agent: eyeBeam release 1102q stamp 51814 > Content-Length: 230 > Content-Type: application/sdp > v=0 > o=- 7 2 IN IP4 172.16.114.1 > s=CounterPath eyeBeam 1.5 > c=IN IP4 113.108.Z.1 > t=0 0 > m=audio 14794 RTP/AVP 18 101 > a=fmtp:18 annexb=yes > a=fmtp:101 0-15 > a=rtpmap:18 G729/8000 > a=rtpmap:101 telephone-event/8000 > a=sendrecv > > NAT/FW ---> Kamailio(KAM) > INVITE sip:[email protected] SIP/2.0 > Via: SIP/2.0/UDP > 113.108.Z.1:13945;branch=z9hG4bK-d8754z-3870be05b936bf38-1---d8754z-;rport > Call-ID: NzYwMzhjOTc5NWJlY2Q5YzFiN2JlZGNjNDlkNzMyNmU. > From: "2001"<sip:[email protected]:12302>;tag=db06e72d > To: "videoConf"<sip:[email protected]> > CSeq: 1 INVITE > Max-Forwards: 70 > Contact: <sip:[email protected]:13202> > Allow: INVITE,ACK,CANCEL,OPTIONS,BYE,REFER,NOTIFY,MESSAGE,SUBSCRIBE,INFO > User-Agent: eyeBeam release 1102q stamp 51814 > Content-Length: 230 > Content-Type: application/sdp > v=0 > o=- 7 2 IN IP4 172.16.114.1 > s=CounterPath eyeBeam 1.5 > c=IN IP4 113.108.Z.1 > t=0 0 > m=audio 14794 RTP/AVP 18 101 > a=fmtp:18 annexb=yes > a=fmtp:101 0-15 > a=rtpmap:18 G729/8000 > a=rtpmap:101 telephone-event/8000 > a=sendrecv > > SIP/2.0 100 trying -- your call is important to us > Via: SIP/2.0/UDP > 172.16.114.1:51828;branch=z9hG4bK-d8754z-3870be05b936bf38-1---d8754z-;rport=12461 > Call-ID: NzYwMzhjOTc5NWJlY2Q5YzFiN2JlZGNjNDlkNzMyNmU. > From: "2001"<sip:[email protected]:5060>;tag=db06e72d > To: "videoConf"<sip:[email protected]> > CSeq: 1 INVITE > Server: kamailio (3.0.2 (sparc64/solaris)) > Content-Length: 0 > KAM ---> AS > INVITE sip:[email protected]:5060 SIP/2.0 > Record-Route: <sip:210.x.y.15;lr=on;nat=yes> > Via: SIP/2.0/UDP 210.x.y.15;branch=z9hG4bK316e.08d5.0 > Via: SIP/2.0/UDP > 113.108.Z.1:13945;branch=z9hG4bK-d8754z-3870be05b936bf38-1---d8754z-;rport=12461 > Call-ID: NzYwMzhjOTc5NWJlY2Q5YzFiN2JlZGNjNDlkNzMyNmU. > From: "2001"<sip:[email protected]:12302>;tag=db06e72d > To: "videoConf"<sip:[email protected]> > CSeq: 1 INVITE > Max-Forwards: 69 > Contact: <sip:[email protected]:12461> > Allow: INVITE,ACK,CANCEL,OPTIONS,BYE,REFER,NOTIFY,MESSAGE,SUBSCRIBE,INFO > User-Agent: eyeBeam release 1102q stamp 51814 > Content-Length: 257 > Content-Type: application/sdp > v=0 > o=- 7 2 IN IP4 113.108.Z.1 > s=CounterPath eyeBeam 1.5 > c=IN IP4 113.108.Z.1 > t=0 0 > m=audio 14794 RTP/AVP 18 101 > a=fmtp:18 annexb=yes > a=fmtp:101 0-15 > a=rtpmap:18 G729/8000 > a=rtpmap:101 telephone-event/8000 > a=sendrecv > a=oldmediaip:172.16.114.1 > > KAM ---> NAT/FW > SIP/2.0 180 Ringing > Via: SIP/2.0/UDP > 172.16.114.1:51828;branch=z9hG4bK-d8754z-3870be05b936bf38-1---d8754z-;rport=12461 > Record-Route: <sip:210.x.y.15;lr;nat=yes> > Call-ID: NzYwMzhjOTc5NWJlY2Q5YzFiN2JlZGNjNDlkNzMyNmU. > From: "2001"<sip:[email protected]:5060>;tag=db06e72d > To: > "videoConf"<sip:[email protected]>;tag=a72e08e3-09d3-4cd2-a0d2-d33113440310 > CSeq: 1 INVITE > Allow: INVITE,ACK,BYE,CANCEL,PRACK,NOTIFY,INFO,OPTIONS,UPDATE > Supported: 100rel,timer,precondition > Contact: <sip:[email protected]:5060;transport=udp> > Content-Length: 0 > AS ---> KAM > > SIP/2.0 200 Ok > Via: SIP/2.0/UDP 210.x.y.15;branch=z9hG4bK316e.08d5.0 > Via: SIP/2.0/UDP > 113.108.Z.1:13945;branch=z9hG4bK-d8754z-3870be05b936bf38-1---d8754z-;rport=12461 > Record-Route: <sip:210.x.y.15;lr=on;nat=yes> > To: "videoConf" > <sip:[email protected]>;tag=a72e08e3-09d3-4cd2-a0d2-d33113440310 > From: "2001" <sip:[email protected]:12302>;tag=db06e72d > Call-ID: NzYwMzhjOTc5NWJlY2Q5YzFiN2JlZGNjNDlkNzMyNmU. > CSeq: 1 INVITE > Content-Length: 222 > Content-Type: application/sdp > Session-Expires: 1800;refresher=uas > Require: timer > Allow: INVITE,ACK,BYE,CANCEL,PRACK,NOTIFY,INFO,OPTIONS,UPDATE > Supported: 100rel, timer,precondition > Contact: <sip:[email protected]:5060;transport=udp> > v=0 > o=- 15638 1276800468 IN IP4 210.x.y.8 > s=- > c=IN IP4 210.x.y.11 > t=0 0 > m=audio 30654 RTP/AVP 18 101 > a=fmtp:18 annexb=yes > a=fmtp:101 0-15 > a=ptime:20 > a=rtpmap:18 G729/8000 > a=rtpmap:101 telephone-event/8000 > > KAM -----> NAT/FW > SIP/2.0 200 Ok > Via: SIP/2.0/UDP > 113.108.Z.1:13945;branch=z9hG4bK-d8754z-3870be05b936bf38-1---d8754z-;rport=12461 > Record-Route: <sip:210.x.y.15;lr=on;nat=yes> > To: "videoConf" > <sip:[email protected]>;tag=a72e08e3-09d3-4cd2-a0d2-d33113440310 > From: "2001" <sip:[email protected]:12302>;tag=db06e72d > Call-ID: NzYwMzhjOTc5NWJlY2Q5YzFiN2JlZGNjNDlkNzMyNmU. > CSeq: 1 INVITE > Content-Length: 222 > Content-Type: application/sdp > Session-Expires: 1800;refresher=uas > Require: timer > Allow: INVITE,ACK,BYE,CANCEL,PRACK,NOTIFY,INFO,OPTIONS,UPDATE > Supported: 100rel, timer,precondition > Contact: <sip:[email protected]:5060;transport=udp> > v=0 > o=- 15638 1276800468 IN IP4 210.x.y.8 > s=- > c=IN IP4 210.x.y.11 > t=0 0 > m=audio 30654 RTP/AVP 18 101 > a=fmtp:18 annexb=yes > a=fmtp:101 0-15 > a=ptime:20 > a=rtpmap:18 G729/8000 > a=rtpmap:101 telephone-event/8000 > > NAT/FW ----> UAC > SIP/2.0 200 Ok > Via: SIP/2.0/UDP > 172.16.114.1:51828;branch=z9hG4bK-d8754z-3870be05b936bf38-1---d8754z-;rport=12461 > Record-Route: <sip:210.x.y.15;lr;nat=yes> > Call-ID: NzYwMzhjOTc5NWJlY2Q5YzFiN2JlZGNjNDlkNzMyNmU. > From: "2001"<sip:[email protected]:5060>;tag=db06e72d > To: > "videoConf"<sip:[email protected]>;tag=a72e08e3-09d3-4cd2-a0d2-d33113440310 > CSeq: 1 INVITE > Session-Expires: 1800;refresher=uas > Require: timer > Allow: INVITE,ACK,BYE,CANCEL,PRACK,NOTIFY,INFO,OPTIONS,UPDATE > Supported: 100rel,timer,precondition > Contact: <sip:[email protected]:5060;transport=udp> > Content-Length: 222 > Content-Type: application/sdp > v=0 > o=- 15638 1276800468 IN IP4 210.x.y.8 > s=- > c=IN IP4 210.x.y.11 > t=0 0 > m=audio 30654 RTP/AVP 18 101 > a=fmtp:18 annexb=yes > a=fmtp:101 0-15 > a=ptime:20 > a=rtpmap:18 G729/8000 > a=rtpmap:101 telephone-event/8000 > > UAC ---> NAT/FW > ACK sip:[email protected]:5060;transport=udp SIP/2.0 > Via: SIP/2.0/UDP > 172.16.114.1:51828;branch=z9hG4bK-d8754z-ff50226f4e20b91c-1---d8754z-;rport > Max-Forwards: 70 > Route: <sip:210.x.y.15;lr;nat=yes> > Contact: <sip:[email protected]:12461> > To: > "videoConf"<sip:[email protected]>;tag=a72e08e3-09d3-4cd2-a0d2-d33113440310 > From: "2001"<sip:[email protected]:5060>;tag=db06e72d > Call-ID: NzYwMzhjOTc5NWJlY2Q5YzFiN2JlZGNjNDlkNzMyNmU. > CSeq: 1 ACK > User-Agent: eyeBeam release 1102q stamp 51814 > Content-Length: 0 > > NAT/FW ----> KAM > > ACK sip:[email protected]:5060;transport=udp SIP/2.0 > Via: SIP/2.0/UDP > 113.108.Z.1:13945;branch=z9hG4bK-d8754z-ff50226f4e20b91c-1---d8754z-;rport > Route: <sip:210.x.y.15;lr;nat=yes> > Call-ID: NzYwMzhjOTc5NWJlY2Q5YzFiN2JlZGNjNDlkNzMyNmU. > From: "2001"<sip:[email protected]:12302>;tag=db06e72d > To: > "videoConf"<sip:[email protected]>;tag=a72e08e3-09d3-4cd2-a0d2-d33113440310 > CSeq: 1 ACK > Max-Forwards: 70 > Contact: <sip:[email protected]:13202> > User-Agent: eyeBeam release 1102q stamp 51814 > Content-Length: 0 > > KAM ----> AS > > ACK sip:[email protected]:5060;transport=udp SIP/2.0 > Via: SIP/2.0/UDP 210.x.y.15;branch=0 > Via: SIP/2.0/UDP > 113.108.Z.1:13945;branch=z9hG4bK-d8754z-ff50226f4e20b91c-1---d8754z-;rport=12461 > Call-ID: NzYwMzhjOTc5NWJlY2Q5YzFiN2JlZGNjNDlkNzMyNmU. > From: "2001"<sip:[email protected]:12302>;tag=db06e72d > To: > "videoConf"<sip:[email protected]>;tag=a72e08e3-09d3-4cd2-a0d2-d33113440310 > CSeq: 1 ACK > Max-Forwards: 69 > Contact: <sip:[email protected]:12461> > User-Agent: eyeBeam release 1102q stamp 51814 > Content-Length: 0 > ==============End================ > > > Thanks, > Kevin > > > 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