[Serusers] FW: Looping and sending of multiple ACK request
Jan Janak
jan at iptel.org
Fri May 28 16:27:50 CEST 2004
I guess the problem is in this:
if (method=="ACK"){
sl_send_reply("", "ACK");
break;
};
What is this supposed to do ? You must not send any replies to ACK.
Jan.
On 26-05 19:18, Shirley Toh wrote:
> > Hi,
> >
> > Please help! I am trying to forward calls to PSTN gateway. But I run the
> > ser code below, the call went through for the PSTN gateway but I can see
> > multiple request of ACK. Anyone know what is happening ...thanks.!! Please
> > HELP.
> >
> > <<ser.txt>> <<error.txt>>
> > Regards,
> > Shirley
> route{
>
> # initial sanity checks -- messages with
> # max_forwards==0, or excessively long requests
> if (!mf_process_maxfwd_header("10")) {
> sl_send_reply("483","Too Many Hops");
> break;
> };
> if ( msg:len > max_len ) {
> sl_send_reply("513", "Message too big");
> break;
> };
>
>
> #!! Nathelper
> if (nat_uac_test("3")){
> if (method == "REGISTER" || !search("^Record-Route:")){
> log("LOG:Someone trying to register from private IP, rewriting\n");
> fix_nated_contact(); # Rewtite contact with source IP of signalling
> if(method== "INVITE"){
> fix_nated_sdp("1"); # Add direction-active to SDP
> };
> force_rport();
> setflag(6);
> };
> }else{
> fix_nated_contact();
> };
>
>
> # we record-route all messages -- to make sure that
> # subsequent messages will go through our proxy; that's
> # particularly good if upstream and downstream entities
> # use different transport protocol
> record_route();
> # loose-route processing
>
> if (loose_route()) {
> t_relay();
> break;
> };
>
> # if the request is for other domain use UsrLoc
> # (in case, it does not work, use the following command
> # with proper names and addresses in it)
> if (uri==myself) {
>
> if (method=="REGISTER") {
> save("location");
> break;
> };
> };
>
> if (uri=~"sip:019[0-9]+ at myserver.com") {
> strip(1);
> rewritehostport("1.2.3.4:5060");
> t_relay();
> break;
> }
>
>
> if (method=="INVITE") {
> fix_nated_sdp("3");
> append_hf("P-hint:Invite");
> # native SIP destinations are handled using our USRLOC DB
> if (!lookup("location")) {
> sl_send_reply("", "Connecting");
> break;
> };
> };
>
> if (method=="ACK"){
> sl_send_reply("", "ACK");
> break;
> };
>
> if (isflagset(6)){
> force_rtp_proxy();
> append_hf("P-hint:Flag6");
> }else{
> force_rtp_proxy();
> t_on_reply("1");
> };
>
> # forward to current uri now; use stateful forwarding; that
> # works reliably even if we forward from TCP to UDP
> if (!t_relay()) {
> sl_reply_error();
> break;
> };
> }
>
> # all incoming replies for t_onrepli-ed transactions enter here
> onreply_route[1] {
> sdp_mangle_port("-12000");
> if (isflagset(6) && status=~"2[0-9][0-9]"){
> append_hf("First Route");
> fix_nated_contact();
> fix_nated_sdp("1");
> force_rtp_proxy();
> } else if (status=~"2[0-9][0-9]"){
> if (uri=~"sip:019[0-9]+ at myserver.com") {
> append_hf("019");
> fix_nated_contact();
> fix_nated_sdp("3");
> }
> else{
> append_hf("2nd Route");
> fix_nated_contact();
> fix_nated_sdp("2");
> fix_nated_sdp("3");
> force_rtp_proxy();
> }
> };
> }
>
>
>
> SEND >> 1.2.3.4:5060
> INVITE sip:testA at myserver.com SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C067A511D88A02005070100A6A
> From: Caliber Tech <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>
> Contact: <sip:testB at 203.125.211.234:5060>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> Max-Forwards: 70
> Content-Type: application/sdp
> User-Agent: myserver Product VersionOne
> Content-Length: 261
>
> v=0
> o=testB 17930046 17930046 IN IP4 203.125.211.234
> s=myserver Product
> c=IN IP4 203.125.211.234
> t=0 0
> m=audio 8000 RTP/AVP 4 98 97 0
> a=rtpmap:4 G723/8000
> a=rtpmap:98 iLBC/8000
> a=rtpmap:97 speex/8000
> a=rtpmap:0 telephone-event/8000
> a=fmtp:0 0-15
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 100 trying -- your call is important to us
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hG4bKD06873C067A511D88A02005070100A6A
> From: Caliber Tech <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> Server: Sip EXpress router (0.8.12-tcp_nonb (i386/linux))
> Content-Length: 0
> Warning: 392 1.2.3.4:5060 "Noisy feedback tells: pid=20027 req_src_ip=203.125.211.234 req_src_port=58447 in_uri=sip:testA at myserver.com out_uri=sip:testA at PSTN:5060 via_cnt==1"
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 100 Trying
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c067a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> User-agent: myserver Product VersionOne
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 100 Trying
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c067a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> User-agent: myserver Product VersionOne
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 183 Session Progress
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c067a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> Contact: "MEDIARING-ID" <sip:testA at PSTN:5060;transport=udp>
> Content-Length: 159
> Content-Type: application/sdp
>
> v=0
> o=voizBridge 17930046 17930046 IN IP4 PSTN
> s=myserver Product
> c=IN IP4 PSTN
> t=0 0
> m=audio 1732 RTP/AVP 4
> a=rtpmap:4 G723/8000
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 183 Session Progress
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c067a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> Contact: "MEDIARING-ID" <sip:testA at PSTN:5060;transport=udp>
> Content-Length: 159
> Content-Type: application/sdp
>
> v=0
> o=voizBridge 17930046 17930046 IN IP4 PSTN
> s=myserver Product
> c=IN IP4 PSTN
> t=0 0
> m=audio 1732 RTP/AVP 4
> a=rtpmap:4 G723/8000
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c067a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> Contact: "MEDIARING-ID" <sip:testA at PSTN:5060;transport=udp>
> Record-Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Content-Length: 159
> Content-Type: application/sdp
>
> v=0
> o=voizBridge 17930046 17930046 IN IP4 PSTN
> s=myserver Product
> c=IN IP4 PSTN
> t=0 0
> m=audio 1732 RTP/AVP 4
> a=rtpmap:4 G723/8000
>
>
> SEND >> 1.2.3.4:5060
> ACK sip:testA at PSTN:5060;transport=udp SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C167A511D88A02005070100A6A
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:5060>
> Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 ACK
> Max-Forwards: 70
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c067a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> Contact: "MEDIARING-ID" <sip:testA at PSTN:5060;transport=udp>
> Record-Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Content-Length: 159
> Content-Type: application/sdp
>
> v=0
> o=voizBridge 17930046 17930046 IN IP4 PSTN
> s=myserver Product
> c=IN IP4 PSTN
> t=0 0
> m=audio 1732 RTP/AVP 4
> a=rtpmap:4 G723/8000
>
>
> SEND >> 1.2.3.4:5060
> ACK sip:testA at PSTN:5060;transport=udp SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C167A511D88A02005070100A6A
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:5060>
> Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 ACK
> Max-Forwards: 70
> Content-Length: 0
>
>
> SEND >> 1.2.3.4:5060
> BYE sip:testA at PSTN:5060;transport=udp SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C267A511D88A02005070100A6A
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:5060>
> Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13293 BYE
> User-Agent: myserver Product VersionOne
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c267a511d88a02005070100a6a
> Record-Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13293 BYE
> User-agent: myserver Product VersionOne
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 200 OK
> Max-Forwards: 9
> Record-Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c267a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:58447>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13293 BYE
> User-agent: myserver Product VersionOne
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 200 OK
> Max-Forwards: 9
> Record-Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c267a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:58447>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13293 BYE
> User-agent: myserver Product VersionOne
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 100 Trying
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c067a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=9621243475442f10938a000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> User-agent: myserver Product VersionOne
> Content-Length: 0
>
>
> SEND >> 1.2.3.4:5060
> ACK sip:testA at PSTN:5060;transport=udp SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C167A511D88A02005070100A6A
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:5060>
> Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 ACK
> Max-Forwards: 70
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 183 Session Progress
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c067a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=9621243475442f10938a000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> Contact: "MEDIARING-ID" <sip:testA at PSTN:5060;transport=udp>
> Content-Length: 159
> Content-Type: application/sdp
>
> v=0
> o=voizBridge 17930046 17930046 IN IP4 PSTN
> s=myserver Product
> c=IN IP4 PSTN
> t=0 0
> m=audio 1734 RTP/AVP 4
> a=rtpmap:4 G723/8000
>
>
> SEND >> 1.2.3.4:5060
> ACK sip:testA at PSTN:5060;transport=udp SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C167A511D88A02005070100A6A
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:5060>
> Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 ACK
> Max-Forwards: 70
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c067a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=9621243475442f10938a000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> Contact: "MEDIARING-ID" <sip:testA at PSTN:5060;transport=udp>
> Record-Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Content-Length: 159
> Content-Type: application/sdp
>
> v=0
> o=voizBridge 17930046 17930046 IN IP4 PSTN
> s=myserver Product
> c=IN IP4 PSTN
> t=0 0
> m=audio 1734 RTP/AVP 4
> a=rtpmap:4 G723/8000
>
>
> SEND >> 1.2.3.4:5060
> ACK sip:testA at PSTN:5060;transport=udp SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C167A511D88A02005070100A6A
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:5060>
> Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 ACK
> Max-Forwards: 70
> Content-Length: 0
>
>
> SEND >> 203.125.211.233:5060
> REGISTER sip:203.125.211.233 SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C467A511D88A02005070100A6A
> From: van <sip:6567772238 at 203.125.211.233>
> To: van <sip:6567772238 at 203.125.211.233>
> Contact: "van" <sip:6567772238 at 203.125.211.234:5060>
> Call-ID: D068711367A511D88A02005070100A6A at 203.125.211.233
> CSeq: 4901 REGISTER
> Expires: 300
> Max-Forwards: 70
> User-Agent: myserver Product VersionOne
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> BYE sip:testB at 203.125.211.234:58447 SIP/2.0
> Max-Forwards: 10
> Record-Route: <sip:testB at 1.2.3.4;lr=on>
> Via: SIP/2.0/UDP 1.2.3.4;branch=z9hG4bK4c19.6fbff762.0
> Via: SIP/2.0/UDP PSTN:5060;rport=5060
> Via: SIP/2.0/UDP 202.8.41.94:5060
> From: <sip:testA at PSTN:5060>
> To: <sip:testB at PSTN:5060>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 BYE
> Content-Length: 0
> P-hint:Flag6
>
> SEND >> 1.2.3.4:5060
> SIP/2.0 200 Ok
> Via: SIP/2.0/UDP 1.2.3.4;branch=z9hG4bK4c19.6fbff762.0
> Via: SIP/2.0/UDP PSTN:5060;rport=5060
> Via: SIP/2.0/UDP 202.8.41.94:5060
> From: <sip:testA at PSTN:5060>;tag=890f823375442f108d06000000000000
> To: <sip:testB at PSTN:5060>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:5060>
> Record-Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 BYE
> User-Agent: myserver Product VersionOne
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> BYE sip:testB at 203.125.211.234:58447 SIP/2.0
> Max-Forwards: 10
> Record-Route: <sip:testB at 1.2.3.4;lr=on>
> Via: SIP/2.0/UDP 1.2.3.4;branch=z9hG4bK4c19.6fbff762.0
> Via: SIP/2.0/UDP PSTN:5060;rport=5060
> Via: SIP/2.0/UDP 202.8.41.94:5060
> From: <sip:testA at PSTN:5060>
> To: <sip:testB at PSTN:5060>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 BYE
> Content-Length: 0
> P-hint:Flag6
>
> SEND >> 1.2.3.4:5060
> SIP/2.0 200 Ok
> Via: SIP/2.0/UDP 1.2.3.4;branch=z9hG4bK4c19.6fbff762.0
> Via: SIP/2.0/UDP PSTN:5060;rport=5060
> Via: SIP/2.0/UDP 202.8.41.94:5060
> From: <sip:testA at PSTN:5060>;tag=890f823375442f108d06000000000000
> To: <sip:testB at PSTN:5060>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:5060>
> Record-Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 BYE
> User-Agent: myserver Product VersionOne
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 200 OK
> Max-Forwards: 9
> Record-Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c267a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:58447>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13293 BYE
> User-agent: myserver Product VersionOne
> Content-Length: 0
>
>
> SEND >> 203.125.211.233:5060
> REGISTER sip:203.125.211.233 SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C467A511D88A02005070100A6A
> From: van <sip:6567772238 at 203.125.211.233>
> To: van <sip:6567772238 at 203.125.211.233>
> Contact: "van" <sip:6567772238 at 203.125.211.234:5060>
> Call-ID: D068711367A511D88A02005070100A6A at 203.125.211.233
> CSeq: 4901 REGISTER
> Expires: 300
> Max-Forwards: 70
> User-Agent: myserver Product VersionOne
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 200 OK
> Max-Forwards: 9
> Record-Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c267a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:58447>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13293 BYE
> User-agent: myserver Product VersionOne
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 100 Trying
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c067a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=cc039f3475442f108c19000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> User-agent: myserver Product VersionOne
> Content-Length: 0
>
>
> SEND >> 1.2.3.4:5060
> ACK sip:testA at PSTN:5060;transport=udp SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C167A511D88A02005070100A6A
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:5060>
> Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 ACK
> Max-Forwards: 70
> Content-Length: 0
>
>
> SEND >> 203.125.211.233:5060
> REGISTER sip:203.125.211.233 SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C467A511D88A02005070100A6A
> From: van <sip:6567772238 at 203.125.211.233>
> To: van <sip:6567772238 at 203.125.211.233>
> Contact: "van" <sip:6567772238 at 203.125.211.234:5060>
> Call-ID: D068711367A511D88A02005070100A6A at 203.125.211.233
> CSeq: 4901 REGISTER
> Expires: 300
> Max-Forwards: 70
> User-Agent: myserver Product VersionOne
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 183 Session Progress
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c067a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=cc039f3475442f108c19000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> Contact: "MEDIARING-ID" <sip:testA at PSTN:5060;transport=udp>
> Content-Length: 159
> Content-Type: application/sdp
>
> v=0
> o=voizBridge 17930046 17930046 IN IP4 PSTN
> s=myserver Product
> c=IN IP4 PSTN
> t=0 0
> m=audio 1737 RTP/AVP 4
> a=rtpmap:4 G723/8000
>
>
> SEND >> 1.2.3.4:5060
> ACK sip:testA at PSTN:5060;transport=udp SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C167A511D88A02005070100A6A
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:5060>
> Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 ACK
> Max-Forwards: 70
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 486 Busy Here
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c067a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=cc039f3475442f108c19000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> Contact: "MEDIARING-ID" <sip:testA at PSTN:5060;transport=udp>
> Content-Length: 0
>
>
> SEND >> 1.2.3.4:5060
> ACK sip:testA at PSTN:5060;transport=udp SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C167A511D88A02005070100A6A
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:5060>
> Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 ACK
> Max-Forwards: 70
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 200 OK
> Max-Forwards: 9
> Record-Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c267a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:58447>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13293 BYE
> User-agent: myserver Product VersionOne
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 100 Trying
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c067a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=c053dc3475442f108a48000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> User-agent: myserver Product VersionOne
> Content-Length: 0
>
>
> SEND >> 1.2.3.4:5060
> ACK sip:testA at PSTN:5060;transport=udp SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C167A511D88A02005070100A6A
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:5060>
> Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 ACK
> Max-Forwards: 70
> Content-Length: 0
>
>
> SEND >> 203.125.211.233:5060
> REGISTER sip:203.125.211.233 SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C467A511D88A02005070100A6A
> From: van <sip:6567772238 at 203.125.211.233>
> To: van <sip:6567772238 at 203.125.211.233>
> Contact: "van" <sip:6567772238 at 203.125.211.234:5060>
> Call-ID: D068711367A511D88A02005070100A6A at 203.125.211.233
> CSeq: 4901 REGISTER
> Expires: 300
> Max-Forwards: 70
> User-Agent: myserver Product VersionOne
> Content-Length: 0
>
>
> RECEIVE << 1.2.3.4:5060
> SIP/2.0 100 Trying
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport=58447;branch=z9hg4bkd06873c067a511d88a02005070100a6a
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=739b193575442f109940000000000000
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 INVITE
> User-agent: myserver Product VersionOne
> Content-Length: 0
>
>
> SEND >> 1.2.3.4:5060
> ACK sip:testA at PSTN:5060;transport=udp SIP/2.0
> Via: SIP/2.0/UDP 203.125.211.234:5060;rport;branch=z9hG4bKD06873C167A511D88A02005070100A6A
> From: "Caliber Tech" <sip:testB at myserver.com>;tag=170752194
> To: <sip:testA at myserver.com>;tag=890f823375442f108d06000000000000
> Contact: <sip:testB at 203.125.211.234:5060>
> Route: <sip:testA at 1.2.3.4;ftag=170752194;lr=on>
> Call-ID: D06873BF-67A5-11D8-8A02-005070100A6A at 192.168.0.142
> CSeq: 13292 ACK
> Max-Forwards: 70
> Content-Length: 0
>
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