<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:tahoma,new york,times,serif;font-size:10pt"><div>Hi list, I want to comment some problems of nat that I have, I have two connected remote UAC in a same location <br><br>UAC 202 REMOTE A <br>UAC 123 REMOTE A<br><br>if the UAC 123 calls to UAC 202 there is not bidirectional audio <br><br>UAC 204 REMOTE B<br>UAC 122 REMOTE C<br><br>if the UAC 122 calls to UAC 202 if there is bidirectional audio<br><br>some help like I can solve this problem?, the remote clients in site A they are behind a nat symetrics<br><br>I am using rtpproxy version 1.1 and openser 1.3.2 <br><br><br>log sip<br><br><pre>U +2.975758 190.212.49.86:58944 -> 190.184.22.152:5060<br>SIP/2.0 200 OK <br>Via: SIP/2.0/UDP 190.184.22.152:5060;branch=z9hG4bK74f3.13c6ec23.0 <br>Via: SIP/2.0/UDP 192.168.10.37:5060;rport=63451;received=190.212.49.86;branch=z9hG4bK33571797d7d31cb0
<br>Record-Route: <sip:190.184.22.152;lr=on;ftag=0966ab4346392f45> <br>From: "ricardo-elim" <sip:123@190.184.22.152>;tag=0966ab4346392f45 <br>To: <sip:202@190.184.22.152>;tag=15c74eb7e1a2ae92 <br>Call-ID: 4dfa1b96e314c165@192.168.10.37 <br>CSeq: 17345 INVITE <br>User-Agent: Grandstream GXP2020 1.1.6.16 <br>Contact: <sip:202@192.168.10.40:5064;transport=udp> <br>Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK,MESSAGE <br>Content-Type: application/sdp <br>Supported: replaces, timer <br>Content-Length: 214 <br> <br>v=0 <br>o=202 8000 8000 IN IP4 192.168.10.40 <br>s=SIP Call <br>c=IN IP4 192.168.10.40 <br>t=0 0 <br>m=audio 5004 RTP/AVP 18 101 <br>a=sendrecv <br>a=rtpmap:18 G729/8000 <br>a=ptime:20 <br>a=rtpmap:101 telephone-event/8000 <br>a=fmtp:101 0-11 <br><br>#<br>U +0.000475 190.184.22.152:5060 -> 190.212.49.86:63451<br>SIP/2.0 200 OK <br>Via: SIP/2.0/UDP
192.168.10.37:5060;rport=63451;received=190.212.49.86;branch=z9hG4bK33571797d7d31cb0 <br>Record-Route: <sip:190.184.22.152;lr=on;ftag=0966ab4346392f45> <br>From: "ricardo-elim" <sip:123@190.184.22.152>;tag=0966ab4346392f45 <br>To: <sip:202@190.184.22.152>;tag=15c74eb7e1a2ae92 <br>Call-ID: 4dfa1b96e314c165@192.168.10.37 <br>CSeq: 17345 INVITE <br>User-Agent: Grandstream GXP2020 1.1.6.16 <br>Contact: <sip:202@190.212.49.86:58944;transport=udp;nat=yes> <br>Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK,MESSAGE <br>Content-Type: application/sdp <br>Supported: replaces, timer <br>Content-Length: 234 <br>P-hint: onreply_route|force_rtp_proxy <br>P-hint: Onreply-route - fixcontact <br> <br>v=0 <br>o=202 8000 8000 IN IP4 192.168.10.40 <br>s=SIP Call <br>c=IN IP4 190.184.22.152 <br>t=0 0 <br>m=audio 35036 RTP/AVP 18 101 <br>a=sendrecv <br>a=rtpmap:18 G729/8000 <br>a=ptime:20 <br>a=rtpmap:101
telephone-event/8000 <br>a=fmtp:101 0-11 <br>a=nortpproxy:yes <br><br>#<br>U +0.241543 190.212.49.86:63451 -> 190.184.22.152:5060<br>ACK sip:202@190.212.49.86:58944;transport=udp;nat=yes SIP/2.0 <br>Via: SIP/2.0/UDP 192.168.10.37:5060;branch=z9hG4bKa26522558c582a68 <br>Route: <sip:190.184.22.152;lr=on;ftag=0966ab4346392f45> <br>From: "ricardo-elim" <sip:123@190.184.22.152>;tag=0966ab4346392f45 <br>To: <sip:202@190.184.22.152>;tag=15c74eb7e1a2ae92 <br>Contact: <sip:123@192.168.10.37:5060;transport=udp> <br>Supported: path <br>Proxy-Authorization: Digest username="123", realm="190.184.22.152", algorithm=MD5, uri="sip:202@190.184.22.152", nonce="49485f8958ba6dc4e39ee5893d15ea3e60ae19ad", response="afb5db07f3a90d4cfc6ea483fd120404" <br>Call-ID: 4dfa1b96e314c165@192.168.10.37 <br>CSeq: 17345 ACK <br>User-Agent: Grandstream BT200 1.1.6.16 <br>Max-Forwards: 70 <br>Allow:
INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK <br>Content-Length: 0 <br> <br><br>#<br>U +0.000334 190.184.22.152:5060 -> 190.212.49.86:58944<br>ACK sip:202@190.212.49.86:58944;transport=udp SIP/2.0 <br>Record-Route: <sip:190.184.22.152;lr=on;ftag=0966ab4346392f45> <br>Via: SIP/2.0/UDP 190.184.22.152;branch=z9hG4bK74f3.13c6ec23.2 <br>Via: SIP/2.0/UDP 192.168.10.37:5060;rport=63451;received=190.212.49.86;branch=z9hG4bKa26522558c582a68 <br>From: "ricardo-elim" <sip:123@190.184.22.152>;tag=0966ab4346392f45 <br>To: <sip:202@190.184.22.152>;tag=15c74eb7e1a2ae92 <br>Contact: <sip:123@190.212.49.86:63451;transport=udp;nat=yes> <br>Supported: path <br>Proxy-Authorization: Digest username="123", realm="190.184.22.152", algorithm=MD5, uri="sip:202@190.184.22.152", nonce="49485f8958ba6dc4e39ee5893d15ea3e60ae19ad", response="afb5db07f3a90d4cfc6ea483fd120404" <br>Call-ID: 4dfa1b96e314c165@192.168.10.37 <br>CSeq:
17345 ACK <br>User-Agent: Grandstream BT200 1.1.6.16 <br>Max-Forwards: 69 <br>Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK <br>Content-Length: 0 <br> <br><br>#<br>U +0.383479 190.184.22.152:5060 -> 190.212.49.86:58944<br>OPTIONS sip:190.212.49.86:58944 SIP/2.0 <br>Via: SIP/2.0/UDP 190.184.22.152:5060;branch=0 <br>From: sip:pinger@190.184.22.152;tag=d7259e51 <br>To: sip:190.212.49.86:58944 <br>Call-ID: 1f9f65c1-fcccdef2-674a@190.184.22.152 <br>CSeq: 1 OPTIONS <br>Content-Length: 0 <br> <br><br>#<br>U +0.173847 190.212.49.86:58944 -> 190.184.22.152:5060<br>SIP/2.0 200 OK <br>Via: SIP/2.0/UDP 190.184.22.152:5060;branch=0 <br>From: sip:pinger@190.184.22.152;tag=d7259e51 <br>To: sip:190.212.49.86:58944;tag=15c74eb7e1a2ae92 <br>Call-ID: 1f9f65c1-fcccdef2-674a@190.184.22.152 <br>CSeq: 1 OPTIONS <br>User-Agent: Grandstream GXP2020 1.1.6.16 <br>Contact: <sip:202@192.168.10.40:5064;transport=udp> <br>Allow:
INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK,MESSAGE <br>Supported: replaces, timer <br>Content-Length: 0 <br> <br><br>#<br>U +0.826048 190.184.22.152:5060 -> 190.212.35.160:50273<br>OPTIONS sip:190.212.35.160:50273 SIP/2.0 <br>Via: SIP/2.0/UDP 190.184.22.152:5060;branch=0 <br>From: sip:pinger@190.184.22.152;tag=e7259e51 <br>To: sip:190.212.35.160:50273 <br>Call-ID: 1f9f65c1-0dccdef2-774a@190.184.22.152 <br>CSeq: 1 OPTIONS <br>Content-Length: 0 <br> <br><br>#<br>U +0.192726 190.212.35.160:50273 -> 190.184.22.152:5060<br>SIP/2.0 200 OK <br>Via: SIP/2.0/UDP 190.184.22.152:5060;branch=0 <br>From: sip:pinger@190.184.22.152;tag=e7259e51 <br>To: sip:190.212.35.160:50273;tag=c2c330e1c7bae7ba <br>Call-ID: 1f9f65c1-0dccdef2-774a@190.184.22.152 <br>CSeq: 1 OPTIONS <br>User-Agent: Grandstream GXP2000 1.1.6.16 <br>Contact: <sip:203@192.168.0.16:5060;transport=udp;user=phone> <br>Allow:
INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK,MESSAGE <br>Supported: replaces, timer <br>Content-Length: 0 <br> <br><br>#<br>U +1.807039 192.168.11.1:5060 -> 192.168.11.30:5060<br>OPTIONS sip:192.168.11.30:5060 SIP/2.0 <br>Via: SIP/2.0/UDP 192.168.11.1:5060;branch=0 <br>From: sip:pinger@190.184.22.152;tag=f7259e51 <br>To: sip:192.168.11.30:5060 <br>Call-ID: 1f9f65c1-1dccdef2-974a@192.168.11.1 <br>CSeq: 1 OPTIONS <br>Content-Length: 0 <br></pre><br><br>regards <br><br>rickygm<br></div></div><br>
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