== Using SIP RTP TOS bits 184 == Using SIP RTP CoS mark 5 == Using UDPTL TOS bits 184 == Using UDPTL CoS mark 5 -- Executing [0887865299@fax_out:1] Dial("SIP/t38-wgl-00000001", "SIP/Priority_out/0887865299,15") in new stack == Using SIP RTP TOS bits 184 == Using SIP RTP CoS mark 5 == Using UDPTL TOS bits 184 == Using UDPTL CoS mark 5 Audio is at 192.168.3.18 port 17388 Adding codec 0x8 (alaw) to SDP Adding non-codec 0x1 (telephone-event) to SDP Reliably Transmitting (no NAT) to 213.126.197.130:5060: INVITE sip:0887865299@213.126.197.130 SIP/2.0 Via: SIP/2.0/UDP 192.168.3.18:5060;branch=z9hG4bK576cad13;rport Max-Forwards: 70 From: "root" ;tag=as6db9baaf To: Contact: Call-ID: 591394cc6430e1a9146dcb8c636f8f2b@192.168.3.18 CSeq: 102 INVITE User-Agent: Asterisk PBX 1.6.1.12 Date: Mon, 21 Dec 2009 14:57:49 GMT Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO Supported: replaces, timer Content-Type: application/sdp Content-Length: 264 v=0 o=root 1746061467 1746061467 IN IP4 192.168.3.18 s=Asterisk PBX 1.6.1.12 c=IN IP4 192.168.3.18 t=0 0 m=audio 17388 RTP/AVP 8 101 a=rtpmap:8 PCMA/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecv --- -- Called Priority_out/0887865299 wglpbx*CLI> <--- SIP read from UDP://213.126.197.130:5060 ---> SIP/2.0 100 Trying Via: SIP/2.0/UDP 192.168.3.18:5060;branch=z9hG4bK576cad13;rport From: "root" ;tag=as6db9baaf To: Call-ID: 591394cc6430e1a9146dcb8c636f8f2b@192.168.3.18 CSeq: 102 INVITE Content-Length: 0 <-------------> --- (7 headers 0 lines) --- wglpbx*CLI> <--- SIP read from UDP://213.126.197.130:5060 ---> SIP/2.0 200 OK Session-Expires: 3600;refresher=uas Require: timer Via: SIP/2.0/UDP 192.168.3.18:5060;branch=z9hG4bK576cad13;rport To: ;tag=3470396272-161793 From: "root" ;tag=as6db9baaf Call-ID: 591394cc6430e1a9146dcb8c636f8f2b@192.168.3.18 CSeq: 102 INVITE Allow: INVITE, BYE, OPTIONS, CANCEL, ACK, REGISTER, NOTIFY, INFO, REFER, SUBSCRIBE, PRACK, UPDATE Contact: Call-Info: ;method="NOTIFY;Event=telephone-event;Duration=1000" Allow-Events: telephone-event Content-Type: application/sdp Content-Length: 211 v=0 o=AM00SBC01 6718 4416 IN IP4 213.126.197.130 s=sip call c=IN IP4 213.126.197.131 t=0 0 m=audio 20128 RTP/AVP 8 101 a=rtpmap:8 PCMA/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=ptime:20 <-------------> --- (14 headers 10 lines) --- Found RTP audio format 8 Found RTP audio format 101 Found audio description format PCMA for ID 8 Found audio description format telephone-event for ID 101 Capabilities: us - 0x8 (alaw), peer - audio=0x8 (alaw)/video=0x0 (nothing)/text=0x0 (nothing), combined - 0x8 (alaw) Non-codec capabilities (dtmf): us - 0x1 (telephone-event), peer - 0x1 (telephone-event), combined - 0x1 (telephone-event) Peer audio RTP is at port 213.126.197.131:20128 list_route: hop: set_destination: Parsing for address/port to send to set_destination: set destination to 213.126.197.130, port 5060 Transmitting (no NAT) to 213.126.197.130:5060: ACK sip:0887865299@213.126.197.130:5060 SIP/2.0 Via: SIP/2.0/UDP 192.168.3.18:5060;branch=z9hG4bK1d87aba7;rport Max-Forwards: 70 From: "root" ;tag=as6db9baaf To: ;tag=3470396272-161793 Contact: Call-ID: 591394cc6430e1a9146dcb8c636f8f2b@192.168.3.18 CSeq: 102 ACK User-Agent: Asterisk PBX 1.6.1.12 Content-Length: 0 --- -- SIP/Priority_out-00000002 answered SIP/t38-wgl-00000001 [Dec 21 15:57:57] NOTICE[28769]: chan_sip.c:11873 check_auth: Correct auth, but based on stale nonce received from '' [Dec 21 15:58:00] NOTICE[28769]: chan_sip.c:11873 check_auth: Correct auth, but based on stale nonce received from '' wglpbx*CLI> <--- SIP read from UDP://213.126.197.130:5060 ---> INVITE sip:t38-wgl@192.168.3.18 SIP/2.0 Max-Forwards: 68 Session-Expires: 3600;refresher=uac Supported: timer, 100rel To: "root" ;tag=as6db9baaf From: ;tag=3470396272-161793 Call-ID: 591394cc6430e1a9146dcb8c636f8f2b@192.168.3.18 CSeq: 2 INVITE Allow: INVITE, BYE, OPTIONS, CANCEL, ACK, REGISTER, NOTIFY, INFO, REFER, SUBSCRIBE, PRACK, UPDATE Via: SIP/2.0/UDP 213.126.197.130:5060;branch=z9hG4bKcfcf5ff72cfc98f52e2efb2981e96259 Contact: Call-Info: ;method="NOTIFY;Event=telephone-event;Duration=1000" Allow-Events: telephone-event Content-Type: application/sdp Content-Length: 360 v=0 o=AM00SBC01 6718 4417 IN IP4 213.126.197.130 s=sip call c=IN IP4 213.126.197.131 t=0 0 m=image 20128 udptl t38 a=T38FaxVersion:0 a=T38MaxBitRate:14400 a=T38FaxFillBitRemoval:0 a=T38FaxTranscodingMMR:0 a=T38FaxTranscodingJBIG:0 a=T38FaxRateManagement:transferredTCF a=T38FaxMaxBuffer:200 a=T38FaxMaxDatagram:72 a=T38FaxUdpEC:t38UDPRedundancy <-------------> --- (15 headers 15 lines) --- Sending to 213.126.197.130 : 5060 (no NAT) Got T.38 offer in SDP in dialog 591394cc6430e1a9146dcb8c636f8f2b@192.168.3.18 Capabilities: us - 0x8 (alaw), peer - audio=0x0 (nothing)/video=0x0 (nothing)/text=0x0 (nothing), combined - 0x0 (nothing) Non-codec capabilities (dtmf): us - 0x1 (telephone-event), peer - 0x0 (nothing), combined - 0x0 (nothing) Got T.38 Re-invite without audio. Keeping RTP active during T.38 session. <--- Transmitting (no NAT) to 213.126.197.130:5060 ---> SIP/2.0 100 Trying Via: SIP/2.0/UDP 213.126.197.130:5060;branch=z9hG4bKcfcf5ff72cfc98f52e2efb2981e96259;received=213.126.197.130 From: ;tag=3470396272-161793 To: "root" ;tag=as6db9baaf Call-ID: 591394cc6430e1a9146dcb8c636f8f2b@192.168.3.18 CSeq: 2 INVITE Server: Asterisk PBX 1.6.1.12 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO Supported: replaces, timer Require: timer Session-Expires: 1800;refresher=uac Contact: Content-Length: 0 <------------> [Dec 21 15:58:11] WARNING[28769]: udptl.c:766 calculate_far_max_ifp: (no tag): Cannot calculate far_max_ifp before far_max_datagram has been set. [Dec 21 15:58:11] WARNING[28840]: udptl.c:725 calculate_local_max_datagram: (SIP/0887865299): Cannot calculate local_max_datagram before local_max_ifp has been set. <--- Reliably Transmitting (no NAT) to 213.126.197.130:5060 ---> SIP/2.0 200 OK Via: SIP/2.0/UDP 213.126.197.130:5060;branch=z9hG4bKcfcf5ff72cfc98f52e2efb2981e96259;received=213.126.197.130 From: ;tag=3470396272-161793 To: "root" ;tag=as6db9baaf Call-ID: 591394cc6430e1a9146dcb8c636f8f2b@192.168.3.18 CSeq: 2 INVITE Server: Asterisk PBX 1.6.1.12 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO Supported: replaces, timer Require: timer Session-Expires: 1800;refresher=uac Contact: Content-Type: application/sdp Content-Length: 270 v=0 o=root 1746061467 1746061468 IN IP4 192.168.3.18 s=Asterisk PBX 1.6.1.12 c=IN IP4 192.168.3.18 t=0 0 m=image 4910 udptl t38 a=T38FaxVersion:0 a=T38MaxBitRate:2400 a=T38FaxRateManagement:transferredTCF a=T38FaxMaxDatagram:-1 a=T38FaxUdpEC:t38UDPRedundancy <------------> wglpbx*CLI> <--- SIP read from UDP://213.126.197.130:5060 ---> ACK sip:t38-wgl@192.168.3.18 SIP/2.0 Max-Forwards: 68 To: "root" ;tag=as6db9baaf From: ;tag=3470396272-161793 Call-ID: 591394cc6430e1a9146dcb8c636f8f2b@192.168.3.18 CSeq: 2 ACK Allow: INVITE, BYE, OPTIONS, CANCEL, ACK, REGISTER, NOTIFY, INFO, REFER, SUBSCRIBE, PRACK, UPDATE Via: SIP/2.0/UDP 213.126.197.130:5060;branch=z9hG4bK821d1d0d049639350130e372a84a4764 Contact: Content-Length: 0 <-------------> --- (10 headers 0 lines) --- [Dec 21 15:58:12] NOTICE[28769]: chan_sip.c:11873 check_auth: Correct auth, but based on stale nonce received from '' [Dec 21 15:58:15] NOTICE[28769]: chan_sip.c:11873 check_auth: Correct auth, but based on stale nonce received from '' [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191bfb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x811 for 0x19103b8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191b4b8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:22] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x190ffb8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191bfb8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191fcb8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x19195b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x19148b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x19113b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191aeb8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x1910fb8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x19139b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x4ba2e11b for 0x19135b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x19185b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191adb8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x2ed8f95 for 0x191edb8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191d5b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191cdb8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191adb8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191f1b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191e3b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x1913db8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x19189b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191bbb8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x19145b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191c9b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x1913eb8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x19143b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191ceb8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191c8b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x19137b8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x1915db8 [Dec 21 15:58:23] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191dbb8 [Dec 21 15:58:24] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x1919ab8 [Dec 21 15:58:24] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191c4b8 [Dec 21 15:58:24] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x19121b8 [Dec 21 15:58:24] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x19151b8 [Dec 21 15:58:24] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191c4b8 [Dec 21 15:58:27] NOTICE[28769]: chan_sip.c:11873 check_auth: Correct auth, but based on stale nonce received from '' [Dec 21 15:58:31] NOTICE[28769]: chan_sip.c:11873 check_auth: Correct auth, but based on stale nonce received from '' [Dec 21 15:58:31] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x19100b8 [Dec 21 15:58:31] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191fdb8 [Dec 21 15:58:31] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191c7b8 [Dec 21 15:58:38] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:38] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x19136b8 [Dec 21 15:58:38] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191e9b8 [Dec 21 15:58:42] NOTICE[28769]: chan_sip.c:11873 check_auth: Correct auth, but based on stale nonce received from '' [Dec 21 15:58:46] NOTICE[28769]: chan_sip.c:11873 check_auth: Correct auth, but based on stale nonce received from '' [Dec 21 15:58:50] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191feb8 [Dec 21 15:58:50] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x19136b8 [Dec 21 15:58:50] ERROR[28840]: astobj2.c:116 INTERNAL_OBJ: bad magic number 0x0 for 0x191e8b8 wglpbx*CLI> <--- SIP read from UDP://213.126.197.130:5060 ---> INVITE sip:t38-wgl@192.168.3.18 SIP/2.0 Max-Forwards: 68 Session-Expires: 3600;refresher=uac Supported: timer, 100rel To: "root" ;tag=as6db9baaf From: ;tag=3470396272-161793 Call-ID: 591394cc6430e1a9146dcb8c636f8f2b@192.168.3.18 CSeq: 3 INVITE Allow: INVITE, BYE, OPTIONS, CANCEL, ACK, REGISTER, NOTIFY, INFO, REFER, SUBSCRIBE, PRACK, UPDATE Via: SIP/2.0/UDP 213.126.197.130:5060;branch=z9hG4bKf2f1d9e886e13863498592bfa9b72061 Contact: Call-Info: ;method="NOTIFY;Event=telephone-event;Duration=1000" Allow-Events: telephone-event Content-Type: application/sdp Content-Length: 211 v=0 o=AM00SBC01 6718 4418 IN IP4 213.126.197.130 s=sip call c=IN IP4 213.126.197.131 t=0 0 m=audio 20128 RTP/AVP 8 101 a=rtpmap:8 PCMA/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=ptime:20 <-------------> --- (15 headers 10 lines) --- Sending to 213.126.197.130 : 5060 (no NAT) Found RTP audio format 8 Found RTP audio format 101 Found audio description format PCMA for ID 8 Found audio description format telephone-event for ID 101 Capabilities: us - 0x8 (alaw), peer - audio=0x8 (alaw)/video=0x0 (nothing)/text=0x0 (nothing), combined - 0x8 (alaw) Non-codec capabilities (dtmf): us - 0x1 (telephone-event), peer - 0x1 (telephone-event), combined - 0x1 (telephone-event) Peer audio RTP is at port 213.126.197.131:20128 wglpbx*CLI> <--- Transmitting (no NAT) to 213.126.197.130:5060 ---> SIP/2.0 100 Trying Via: SIP/2.0/UDP 213.126.197.130:5060;branch=z9hG4bKf2f1d9e886e13863498592bfa9b72061;received=213.126.197.130 From: ;tag=3470396272-161793 To: "root" ;tag=as6db9baaf Call-ID: 591394cc6430e1a9146dcb8c636f8f2b@192.168.3.18 CSeq: 3 INVITE Server: Asterisk PBX 1.6.1.12 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO Supported: replaces, timer equire: timer Session-Expires: 1800;refresher=uac Contact: Content-Length: 0 <------------> Audio is at 192.168.3.18 port 17388 Adding codec 0x8 (alaw) to SDP Adding non-codec 0x1 (telephone-event) to SDP <--- Reliably Transmitting (no NAT) to 213.126.197.130:5060 ---> SIP/2.0 200 OK Via: SIP/2.0/UDP 213.126.197.130:5060;branch=z9hG4bKf2f1d9e886e13863498592bfa9b72061;received=213.126.197.130 From: ;tag=3470396272-161793 To: "root" ;tag=as6db9baaf Call-ID: 591394cc6430e1a9146dcb8c636f8f2b@192.168.3.18 CSeq: 3 INVITE Server: Asterisk PBX 1.6.1.12 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO Supported: replaces, timer Require: timer Session-Expires: 1800;refresher=uac Contact: Content-Type: application/sdp Content-Length: 264 v=0 o=root 1746061467 1746061469 IN IP4 192.168.3.18 s=Asterisk PBX 1.6.1.12 c=IN IP4 192.168.3.18 t=0 0 m=audio 17388 RTP/AVP 8 101 a=rtpmap:8 PCMA/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 a=silenceSupp:off - - - - a=ptime:20 a=sendrecv <------------>