Dear List,

SER at Public IP : 212.154.104.198 and operating good, there's no firewall or etc. PSTN Gateway located at Public IP : 212.154.59.48 and operating good, there's no firewall or etc. There are two ATA's for testing purpose, both are behind NAT (Zoom X4 ADSL Modem/Gateway) but please note that port forwarding is done from router so when a user dials another one, the voice traffce flows directly between users, not on SER and again no problem for parties while calling each other, they can hear/speak.

Gateway already set up to accept calls from SER's IP. When i try to dial a cellular/landline number as i can see results from ngrep utility, SER routes the call to Gateway and step by step it's , INVITE, RINGING... i hear ringing tone, and then internet connection for computers/servers/voip devices in the ATA's sides are cut and ADSL modems halts, i have to switch it off and on. after a time, not more then 10 seconds my cellular rings, i open it and there's no voice since the connection was lost with ATA's... Finally, i can say that routing is working but why my internet connection is lost everytime when i try to make a cellular/landline call...

I've tried to setup a STUN Server Setting in ATA's, i've tried with a public STUN Server 66.7.238.210:3478 again that did not solved my problem.

Anyone have an idea ?

Thanks, Ozan Blotter

My SER version is 0.9.4 and below is my SER.CFG

check_via=no # (cmd. line: -v) dns=no # (cmd. line: -r) rev_dns=no # (cmd. line: -R) port=5060 children=4 fifo="/tmp/openser_fifo"

loadmodule "/usr/lib/openser/modules/sl.so" loadmodule "/usr/lib/openser/modules/tm.so" loadmodule "/usr/lib/openser/modules/rr.so" loadmodule "/usr/lib/openser/modules/maxfwd.so" loadmodule "/usr/lib/openser/modules/usrloc.so" loadmodule "/usr/lib/openser/modules/registrar.so" loadmodule "/usr/lib/openser/modules/textops.so"

modparam("usrloc", "db_mode", 0) modparam("rr", "enable_full_lr", 1)

route{

if (!mf_process_maxfwd_header("10")) { sl_send_reply("483","Too Many Hops"); break; }; if (msg:len >= 8192 ) { sl_send_reply("513", "Message too big"); break; };

if (!method=="REGISTER") record_route();

if (loose_route()) { append_hf("P-hint: rr-enforced\r\n"); route(1); break; };

if (!uri==myself) { append_hf("P-hint: outbound\r\n"); route(1); break; };

if (method=="REGISTER") {

save("location"); break; };

if (lookup("aliases")) { if(!uri==myself) { append_hf("P-hint: outbound alias\r\n"); route(1); break; } }

if (uri=~"^sip:9053[0-9]*@*") { rewritehost("212.154.XX.YY"); # prefix("201"); route(1); break; };

if (!lookup("location")) { sl_send_reply("404", "Not Found"); break; };

append_hf("P-hint: usrloc applied\r\n"); route(1); }

route[1] { if (!t_relay()) { sl_reply_error(); }; }

This is NGREP log for a cellular call :

[root@n212-154-104-198 openser]# ngrep 90532 port 5060 interface: eth0 (212.154.104.196/255.255.255.252) filter: ip and ( port 5060 ) match: 90532 ### U 85.96.192.140:5060 -> 212.154.104.198:5060 INVITE sip:905325123580@212.154.104.198 SIP/2.0..Via: SIP/2.0/UDP 85.96.192 .140:5060;branch=z9hG4bKaae6e7e772518fac..Max-Forwards: 70..To: <sip:905325 123580@212.154.104.198>..From: sip:8334843600@212.154.104.198;user=phone; tag=xIjNyIDMxID..Call-ID: 7626671D19D1212@85.96.192.140..CSeq: 1 INVITE..Co ntact: sip:8334843600@85.96.192.140:5060..Session-Expires: 100;refresher= uac..Supported: timer..Content-Type: application/sdp..Content-Length: 191.. ..v=0..o=8334843600 0 0 IN IP4 85.96.192.140..s=-..c=IN IP4 85.96.192.140.. t=0 0..m=audio 15034 RTP/AVP 18 18..a=rtpmap:18 G729/8000..a=sendrecv..a=rt pmap:18 G729/8000..a=sendrecv..a=ptime:20.. # U 212.154.104.198:5060 -> 85.96.192.140:5060 SIP/2.0 100 trying -- your call is important to us..Via: SIP/2.0/UDP 85.96. 192.140:5060;branch=z9hG4bKaae6e7e772518fac..To: <sip:905325123580@212.154. 104.198>..From: sip:8334843600@212.154.104.198;user=phone;tag=xIjNyIDMxID ..Call-ID: 7626671D19D1212@85.96.192.140..CSeq: 1 INVITE..Server: OpenSer ( 0.9.4 (i386/linux))..Content-Length: 0..Warning: 392 212.154.104.198:5060 " Noisy feedback tells: pid=1969 req_src_ip=85.96.192.140 req_src_port=5060 in_uri=sip:905325123580@212.154.104.198 out_uri=sip:905325123580@212.154.59 .48 via_cnt==1".... # U 212.154.104.198:5060 -> 212.154.59.48:5060 INVITE sip:905325123580@212.154.59.48 SIP/2.0..Record-Route: <sip:212.154.1 04.198;ftag=xIjNyIDMxID;lr=on>..Via: SIP/2.0/UDP 212.154.104.198;branch=z9h G4bK1bbb.81b58062.0..Via: SIP/2.0/UDP 85.96.192.140:5060;branch=z9hG4bKaae6 e7e772518fac..Max-Forwards: 16..To: sip:905325123580@212.154.104.198..Fro m: sip:8334843600@212.154.104.198;user=phone;tag=xIjNyIDMxID..Call-ID: 76 26671D19D1212@85.96.192.140..CSeq: 1 INVITE..Contact: <sip:8334843600@85.96 .192.140:5060>..Session-Expires: 100;refresher=uac..Supported: timer..Conte nt-Type: application/sdp..Content-Length: 191....v=0..o=8334843600 0 0 IN I P4 85.96.192.140..s=-..c=IN IP4 85.96.192.140..t=0 0..m=audio 15034 RTP/AVP 18 18..a=rtpmap:18 G729/8000..a=sendrecv..a=rtpmap:18 G729/8000..a=sendrec v..a=ptime:20.. # U 212.154.59.48:5060 -> 212.154.104.198:5060 SIP/2.0 100 Trying..Via: SIP/2.0/UDP 212.154.104.198:5060;branch=z9hG4bK1bb b.81b58062.0..Via: SIP/2.0/UDP 85.96.192.140:5060;branch=z9hG4bKaae6e7e7725 18fac..Record-Route: sip:212.154.104.198;ftag=xIjNyIDMxID;lr=on..From: <s ip:8334843600@212.154.104.198;user=phone>;tag=xIjNyIDMxID..To: <sip:9053251 23580@212.154.104.198>;tag=ff0551002a01ff10ff0000ffffffff1e..Call-ID: 76266 71D19D1212@85.96.192.140..CSeq: 1 INVITE..Contact: <sip:905325123580@212.15 4.59.48;user=phone>..Server: MERA MSIP v.1.0.1..Content-Length: 0.... ## U 212.154.59.48:5060 -> 212.154.104.198:5060 SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 212.154.104.198:5060;branch=z9hG4bK1b bb.81b58062.0..Via: SIP/2.0/UDP 85.96.192.140:5060;branch=z9hG4bKaae6e7e772 518fac..Record-Route: sip:212.154.104.198;ftag=xIjNyIDMxID;lr=on..From: < sip:8334843600@212.154.104.198;user=phone>;tag=xIjNyIDMxID..To: <sip:905325 123580@212.154.104.198>;tag=ff0551002a01ff10ff0000ffffffff1e..Call-ID: 7626 671D19D1212@85.96.192.140..CSeq: 1 INVITE..Contact: <sip:905325123580@212.1 54.59.48;user=phone>..Server: MERA MSIP v.1.0.1..Content-Length: 0.... # U 212.154.104.198:5060 -> 85.96.192.140:5060 SIP/2.0 180 Ringing..Via: SIP/2.0/UDP 85.96.192.140:5060;branch=z9hG4bKaae6 e7e772518fac..Record-Route: sip:212.154.104.198;ftag=xIjNyIDMxID;lr=on..F rom: sip:8334843600@212.154.104.198;user=phone;tag=xIjNyIDMxID..To: <sip: 905325123580@212.154.104.198>;tag=ff0551002a01ff10ff0000ffffffff1e..Call-ID : 7626671D19D1212@85.96.192.140..CSeq: 1 INVITE..Contact: <sip:905325123580 @212.154.59.48;user=phone>..Server: MERA MSIP v.1.0.1..Content-Length: 0... . ##