[Freeswitch-users] leg-B cuts off connection while transfer

Paul Zillmann mail at paulzillmann.de
Fri Jan 20 20:42:06 MSK 2017


Hello Folks,

a user hooked me on, that whenever he calls certain numbers, and was put
into hold (call is transfered), that legB sends a BYE after all.
Is this a misconfigure on the user's side - or is legB misconfigured?

The siptrace attatched seems to be okay - but what I don't understand
is, why is the second reinvite marked as recvonly.
I guess the second reinvited comes from legB because of the transfer was
accepted - but why reconly - and why does legB sends a BYE after that one?

Thanks a lot

   ------------------------------------------------------------------------
recv 1075 bytes from udp/[10.0.0.2]:5060 at 16:45:47.854134:
   ------------------------------------------------------------------------
   INVITE sip:022029****@172.16.10.11 SIP/2.0
   Via: SIP/2.0/UDP
10.0.0.2:5060;branch=z9hG4bK00de6a2e95dde611a221b1b68e4749c1;rport
   From: "PhonerLite" <sip:204 at 172.16.10.11>;tag=2258694084
   To: <sip:022029****@172.16.10.11>
   Call-ID: 00DE6A2E-95DD-E611-A220-B1B68E4749C1 at 10.0.0.2
   CSeq: 21 INVITE
   Contact: <sip:204 at 10.0.0.2:5060>
   Content-Type: application/sdp
   Allow: INVITE, ACK, BYE, CANCEL, INFO, MESSAGE, NOTIFY, OPTIONS,
REFER, UPDATE, PRACK
   Max-Forwards: 70
   P-Early-Media: supported
   User-Agent: SIPPER for PhonerLite
   Session-Expires: 1800
   Supported: 100rel, replaces, from-change, timer
   P-Preferred-Identity: <sip:204 at 172.16.10.11>
   Content-Length:   406

   v=0
   o=- 2104407805 1 IN IP4 10.0.0.2
   s=SIPPER for PhonerLite
   c=IN IP4 10.0.0.2
   t=0 0
   m=audio 5062 RTP/AVP 9 8 0 2 3 97 110 111 101
   a=rtpmap:9 G722/8000
   a=rtpmap:8 PCMA/8000
   a=rtpmap:0 PCMU/8000
   a=rtpmap:2 G726-32/8000
   a=rtpmap:3 GSM/8000
   a=rtpmap:97 iLBC/8000
   a=rtpmap:110 speex/8000
   a=rtpmap:111 speex/16000
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-16
   a=ssrc:1205340143
   a=sendrecv
   ------------------------------------------------------------------------
send 325 bytes to udp/[10.0.0.2]:5060 at 16:45:47.854518:
   ------------------------------------------------------------------------
   SIP/2.0 100 Trying
   Via: SIP/2.0/UDP
10.0.0.2:5060;branch=z9hG4bK00de6a2e95dde611a221b1b68e4749c1;rport=5060
   From: "PhonerLite" <sip:204 at 172.16.10.11>;tag=2258694084
   To: <sip:022029****@172.16.10.11>
   Call-ID: 00DE6A2E-95DD-E611-A220-B1B68E4749C1 at 10.0.0.2
   CSeq: 21 INVITE
   User-Agent: H6G Callserver
   Content-Length: 0

   ------------------------------------------------------------------------
send 1417 bytes to udp/[217.0.23.100]:5060 at 16:45:47.911364:
   ------------------------------------------------------------------------
   INVITE sip:022029****@tel.t-online.de SIP/2.0
   Via: SIP/2.0/UDP 172.16.10.11:5080;rport;branch=z9hG4bK782XNNX3Fm2Ur
   Route: <sip:217.0.23.100:5060;transport=udp;lr>
   Max-Forwards: 69
   From: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   To: <sip:022029****@tel.t-online.de>
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127509 INVITE
   Contact: <sip:gw+P at 172.16.10.11:5080;transport=udp;gw=P>
   User-Agent: H6G Callserver
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE,
REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
   Supported: timer, path, replaces
   Allow-Events: talk, hold, conference, presence, as-feature-event,
dialog, line-seize, call-info, sla, include-session-description,
presence.winfo, message-summary, refer
   Privacy: none
   Content-Type: application/sdp
   Content-Disposition: session
   Content-Length: 360
   P-Early-Media: supported
   X-FS-Support: update_display,send_info
   P-Asserted-Identity: "PhonerLite" <sip:0220224****@tel.t-online.de>
   P-Preferred-Identity: <sip:0220224****@tel.t-online.de>

   v=0
   o=FreeSWITCH 1484904625 1484904626 IN IP4 172.16.10.11
   s=FreeSWITCH
   c=IN IP4 172.16.10.11
   t=0 0
   m=audio 22522 RTP/AVP 8 0 110 111 101 102
   a=rtpmap:8 PCMA/8000
   a=rtpmap:0 PCMU/8000
   a=rtpmap:110 SPEEX/8000
   a=rtpmap:111 SPEEX/16000
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-16
   a=rtpmap:102 telephone-event/16000
   a=fmtp:102 0-16
   a=ptime:20
   ------------------------------------------------------------------------
recv 528 bytes from udp/[217.0.23.100]:5060 at 16:45:48.072425:
   ------------------------------------------------------------------------
   SIP/2.0 407 Proxy Authentication Required 02035034C
   Via: SIP/2.0/UDP
172.16.10.11:5080;received=91.13.238.143;rport=5080;branch=z9hG4bK782XNNX3Fm2Ur
   To:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_97483a920cc4ce8660c6c8f7126c6e9d
   From: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127509 INVITE
   Content-Length: 0
   Proxy-Authenticate: Digest
nonce="CFFDD4D3B7308258000000003356C90F",realm="tel.t-online.de",algorithm=MD5,qop="auth",stale=true

   ------------------------------------------------------------------------
send 426 bytes to udp/[217.0.23.100]:5060 at 16:45:48.072612:
   ------------------------------------------------------------------------
   ACK sip:022029****@tel.t-online.de SIP/2.0
   Via: SIP/2.0/UDP 172.16.10.11:5080;rport;branch=z9hG4bK782XNNX3Fm2Ur
   Route: <sip:217.0.23.100:5060;transport=udp;lr>
   Max-Forwards: 69
   From: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   To:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_97483a920cc4ce8660c6c8f7126c6e9d
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127509 ACK
   Content-Length: 0

   ------------------------------------------------------------------------
send 1702 bytes to udp/[217.0.23.100]:5060 at 16:45:48.073041:
   ------------------------------------------------------------------------
   INVITE sip:022029****@tel.t-online.de SIP/2.0
   Via: SIP/2.0/UDP 172.16.10.11:5080;rport;branch=z9hG4bK8HvpQge7cXrem
   Route: <sip:217.0.23.100:5060;transport=udp;lr>
   Max-Forwards: 69
   From: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   To: <sip:022029****@tel.t-online.de>
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127510 INVITE
   Contact: <sip:gw+P at 172.16.10.11:5080;transport=udp;gw=P>
   User-Agent: H6G Callserver
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE,
REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
   Supported: timer, path, replaces
   Allow-Events: talk, hold, conference, presence, as-feature-event,
dialog, line-seize, call-info, sla, include-session-description,
presence.winfo, message-summary, refer
   Proxy-Authorization: Digest username="jbvp-scharf at t-online.de",
realm="tel.t-online.de", nonce="CFFDD4D3B7308258000000003356C90F",
cnonce="Wqe3FFnKEjWDEkCNXBvrUw", algorithm=MD5,
uri="sip:022029****@tel.t-online.de",
response="f9665e5312227392a11b97914e11593d", qop=auth, nc=00000001
   Privacy: none
   Content-Type: application/sdp
   Content-Disposition: session
   Content-Length: 360
   P-Early-Media: supported
   X-FS-Support: update_display,send_info
   P-Asserted-Identity: "PhonerLite" <sip:0220224****@tel.t-online.de>
   P-Preferred-Identity: <sip:0220224****@tel.t-online.de>

   v=0
   o=FreeSWITCH 1484904625 1484904626 IN IP4 172.16.10.11
   s=FreeSWITCH
   c=IN IP4 172.16.10.11
   t=0 0
   m=audio 22522 RTP/AVP 8 0 110 111 101 102
   a=rtpmap:8 PCMA/8000
   a=rtpmap:0 PCMU/8000
   a=rtpmap:110 SPEEX/8000
   a=rtpmap:111 SPEEX/16000
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-16
   a=rtpmap:102 telephone-event/16000
   a=fmtp:102 0-16
   a=ptime:20
   ------------------------------------------------------------------------
recv 320 bytes from udp/[217.0.23.100]:5060 at 16:45:48.304747:
   ------------------------------------------------------------------------
   SIP/2.0 100 Trying
   Via: SIP/2.0/UDP
172.16.10.11:5080;received=91.13.238.143;rport=5080;branch=z9hG4bK8HvpQge7cXrem
   To: <sip:022029****@tel.t-online.de>
   From: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127510 INVITE
   Content-Length: 0

   ------------------------------------------------------------------------
recv 876 bytes from udp/[217.0.23.100]:5060 at 16:45:49.434461:
   ------------------------------------------------------------------------
   SIP/2.0 183 Session Progress
   Via: SIP/2.0/UDP
172.16.10.11:5080;received=91.13.238.143;rport=5080;branch=z9hG4bK8HvpQge7cXrem
   To:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_p65566t1484927148m25502c952768733s1_2334977008-822422466
   From: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127510 INVITE
   Contact: <sip:sgc_c at 217.0.23.100;transport=udp>
   Record-Route: <sip:217.0.23.100;transport=udp;lr>
   P-Early-Media: sendonly
   Supported: timer
   Content-Type: application/sdp
   Content-Length: 225
   Allow: NOTIFY, UPDATE, PRACK, OPTIONS, BYE, ACK, CANCEL, INVITE, REGISTER

   v=0
   o=- 1144933594 2336235026 IN IP4 217.0.23.100
   s=Basic Session
   c=IN IP4 217.0.4.167
   t=0 0
   m=audio 10224 RTP/AVP 8 101
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-15
   a=rtpmap:8 PCMA/8000
   a=ptime:20
   a=sendrecv
   ------------------------------------------------------------------------
send 1129 bytes to udp/[10.0.0.2]:5060 at 16:45:49.457465:
   ------------------------------------------------------------------------
   SIP/2.0 183 Session Progress
   Via: SIP/2.0/UDP
10.0.0.2:5060;branch=z9hG4bK00de6a2e95dde611a221b1b68e4749c1;rport=5060
   From: "PhonerLite" <sip:204 at 172.16.10.11>;tag=2258694084
   To: <sip:022029****@172.16.10.11>;tag=8XZN8mgHrg9aB
   Call-ID: 00DE6A2E-95DD-E611-A220-B1B68E4749C1 at 10.0.0.2
   CSeq: 21 INVITE
   Contact: <sip:022029****@172.16.10.11:5060;transport=udp>
   User-Agent: H6G Callserver
   Accept: application/sdp
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE,
REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
   Supported: timer, path, replaces
   Allow-Events: talk, hold, conference, presence, as-feature-event,
dialog, line-seize, call-info, sla, include-session-description,
presence.winfo, message-summary, refer
   Content-Type: application/sdp
   Content-Disposition: session
   Content-Length: 220
   P-Early-Media: sendonly
   P-Asserted-Identity: "[P] 022029****" <sip:022029****@172.16.10.11>

   v=0
   o=FreeSWITCH 1484896495 1484896496 IN IP4 172.16.10.11
   s=FreeSWITCH
   c=IN IP4 172.16.10.11
   t=0 0
   m=audio 30654 RTP/AVP 8 101
   a=rtpmap:8 PCMA/8000
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-16
   a=ptime:20
   ------------------------------------------------------------------------
recv 867 bytes from udp/[217.0.23.100]:5060 at 16:45:49.838384:
   ------------------------------------------------------------------------
   SIP/2.0 180 Ringing
   Via: SIP/2.0/UDP
172.16.10.11:5080;received=91.13.238.143;rport=5080;branch=z9hG4bK8HvpQge7cXrem
   To:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_p65566t1484927148m25502c952768733s1_2334977008-822422466
   From: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127510 INVITE
   Contact: <sip:sgc_c at 217.0.23.100;transport=udp>
   Record-Route: <sip:217.0.23.100;transport=udp;lr>
   P-Early-Media: sendonly
   Supported: timer
   Content-Type: application/sdp
   Content-Length: 225
   Allow: NOTIFY, UPDATE, PRACK, OPTIONS, BYE, ACK, CANCEL, INVITE, REGISTER

   v=0
   o=- 1144933594 2336235026 IN IP4 217.0.23.100
   s=Basic Session
   c=IN IP4 217.0.4.167
   t=0 0
   m=audio 10224 RTP/AVP 8 101
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-15
   a=rtpmap:8 PCMA/8000
   a=ptime:20
   a=sendrecv
   ------------------------------------------------------------------------
recv 1132 bytes from udp/[217.0.23.100]:5060 at 16:46:02.806318:
   ------------------------------------------------------------------------
   SIP/2.0 200 OK
   Via: SIP/2.0/UDP
172.16.10.11:5080;received=91.13.238.143;rport=5080;branch=z9hG4bK8HvpQge7cXrem
   To:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_p65566t1484927148m25502c952768733s1_2334977008-822422466
   From: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127510 INVITE
   Contact:
<sip:sgc_c at 217.0.23.100;transport=udp>;+g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel"
   Record-Route: <sip:217.0.23.100;transport=udp;lr>
   Session-Expires: 1800;refresher=uas
   Supported: timer
   Content-Type: application/sdp
   Content-Length: 225
   Session-ID: cf2f265e180b6a914ef96ffa72c934f5
   Authentication-Info:
qop=auth,rspauth="91a1f6e74a09e15ea0682500b4dc281f",cnonce="Wqe3FFnKEjWDEkCNXBvrUw",nc=00000001
   Allow: REGISTER, REFER, NOTIFY, SUBSCRIBE, PRACK, UPDATE, PUBLISH,
INFO, INVITE, ACK, OPTIONS, CANCEL, BYE

   v=0
   o=- 1144933594 2336235026 IN IP4 217.0.23.100
   s=Basic Session
   c=IN IP4 217.0.4.167
   t=0 0
   m=audio 10224 RTP/AVP 8 101
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-15
   a=rtpmap:8 PCMA/8000
   a=ptime:20
   a=sendrecv
   ------------------------------------------------------------------------
send 794 bytes to udp/[217.0.23.100]:5060 at 16:46:02.808824:
   ------------------------------------------------------------------------
   ACK sip:sgc_c at 217.0.23.100;transport=udp SIP/2.0
   Via: SIP/2.0/UDP 172.16.10.11:5080;rport;branch=z9hG4bK9tNFSBZaa6e1F
   Route: <sip:217.0.23.100;transport=udp;lr>
   Max-Forwards: 70
   From: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   To:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_p65566t1484927148m25502c952768733s1_2334977008-822422466
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127510 ACK
   Contact: <sip:gw+P at 172.16.10.11:5080;transport=udp;gw=P>
   Proxy-Authorization: Digest username="jbvp-scharf at t-online.de",
realm="tel.t-online.de", nonce="CFFDD4D3B7308258000000003356C90F",
cnonce="Wqe3FFnKEjWDEkCNXBvrUw", algorithm=MD5,
uri="sip:022029****@tel.t-online.de",
response="f9665e5312227392a11b97914e11593d", qop=auth, nc=00000001
   Content-Length: 0

   ------------------------------------------------------------------------
send 1118 bytes to udp/[10.0.0.2]:5060 at 16:46:02.826970:
   ------------------------------------------------------------------------
   SIP/2.0 200 OK
   Via: SIP/2.0/UDP
10.0.0.2:5060;branch=z9hG4bK00de6a2e95dde611a221b1b68e4749c1;rport=5060
   From: "PhonerLite" <sip:204 at 172.16.10.11>;tag=2258694084
   To: <sip:022029****@172.16.10.11>;tag=8XZN8mgHrg9aB
   Call-ID: 00DE6A2E-95DD-E611-A220-B1B68E4749C1 at 10.0.0.2
   CSeq: 21 INVITE
   Contact: <sip:022029****@172.16.10.11:5060;transport=udp>
   User-Agent: H6G Callserver
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE,
REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
   Require: timer
   Supported: timer, path, replaces
   Allow-Events: talk, hold, conference, presence, as-feature-event,
dialog, line-seize, call-info, sla, include-session-description,
presence.winfo, message-summary, refer
   Session-Expires: 1800;refresher=uac
   Content-Type: application/sdp
   Content-Disposition: session
   Content-Length: 220
   P-Asserted-Identity: "[P] 022029****" <sip:022029****@172.16.10.11>

   v=0
   o=FreeSWITCH 1484896495 1484896496 IN IP4 172.16.10.11
   s=FreeSWITCH
   c=IN IP4 172.16.10.11
   t=0 0
   m=audio 30654 RTP/AVP 8 101
   a=rtpmap:8 PCMA/8000
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-16
   a=ptime:20
   ------------------------------------------------------------------------
recv 399 bytes from udp/[10.0.0.2]:5060 at 16:46:02.859203:
   ------------------------------------------------------------------------
   ACK sip:022029****@172.16.10.11:5060;transport=udp SIP/2.0
   Via: SIP/2.0/UDP
10.0.0.2:5060;branch=z9hG4bK80af5b3795dde611a221b1b68e4749c1;rport
   From: "PhonerLite" <sip:204 at 172.16.10.11>;tag=2258694084
   To: <sip:022029****@172.16.10.11>;tag=8XZN8mgHrg9aB
   Call-ID: 00DE6A2E-95DD-E611-A220-B1B68E4749C1 at 10.0.0.2
   CSeq: 21 ACK
   Contact: <sip:204 at 10.0.0.2:5060>
   Max-Forwards: 70
   Content-Length: 0

   ------------------------------------------------------------------------
recv 1011 bytes from udp/[217.0.23.100]:5060 at 16:46:36.717056:
   ------------------------------------------------------------------------
   INVITE sip:gw+P at 172.16.10.11:5080;transport=udp;gw=P SIP/2.0
   Max-Forwards: 66
   Via: SIP/2.0/UDP
217.0.23.100:5060;branch=z9hG4bKg3Zqkv7iyntgqns9719p5933wldmbjr9y
   To: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   From:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_p65566t1484927148m25502c952768733s1_2334977008-822422466
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127511 INVITE
   Contact:
<sip:sgc_c at 217.0.23.100;transport=udp>;+g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel"
   Min-Se: 900
   Session-Expires: 1800;refresher=uac
   Supported: timer
   Supported: 100rel
   Content-Type: application/sdp
   Content-Length: 237
   Allow: REGISTER, REFER, NOTIFY, SUBSCRIBE, PRACK, UPDATE, PUBLISH,
INFO, INVITE, ACK, OPTIONS, CANCEL, BYE

   v=0
   o=- 1144933594 2336235027 IN IP4 217.0.23.100
   s=Basic Session
   c=IN IP4 217.0.4.167
   t=0 0
   a=sendonly
   m=audio 10224 RTP/AVP 8 101
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-15
   a=rtpmap:8 PCMA/8000
   a=ptime:20
   a=sendonly
   ------------------------------------------------------------------------
send 404 bytes to udp/[217.0.23.100]:5060 at 16:46:36.717365:
   ------------------------------------------------------------------------
   SIP/2.0 100 Trying
   Via: SIP/2.0/UDP
217.0.23.100:5060;branch=z9hG4bKg3Zqkv7iyntgqns9719p5933wldmbjr9y
   From:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_p65566t1484927148m25502c952768733s1_2334977008-822422466
   To: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127511 INVITE
   User-Agent: H6G Callserver
   Content-Length: 0

   ------------------------------------------------------------------------
send 975 bytes to udp/[217.0.23.100]:5060 at 16:46:36.969711:
   ------------------------------------------------------------------------
   SIP/2.0 200 OK
   Via: SIP/2.0/UDP
217.0.23.100:5060;branch=z9hG4bKg3Zqkv7iyntgqns9719p5933wldmbjr9y
   From:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_p65566t1484927148m25502c952768733s1_2334977008-822422466
   To: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127511 INVITE
   Contact: <sip:gw+P at 172.16.10.11:5080;transport=udp;gw=P>
   User-Agent: H6G Callserver
   Accept: application/sdp
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE,
REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
   Require: timer
   Supported: timer, path, replaces
   Session-Expires: 1800;refresher=uac
   Content-Type: application/sdp
   Content-Disposition: session
   Content-Length: 232

   v=0
   o=FreeSWITCH 1484904625 1484904627 IN IP4 172.16.10.11
   s=FreeSWITCH
   c=IN IP4 172.16.10.11
   t=0 0
   m=audio 22522 RTP/AVP 8 101
   a=rtpmap:8 PCMA/8000
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-16
   a=inactive
   a=ptime:20
   ------------------------------------------------------------------------
recv 540 bytes from udp/[217.0.23.100]:5060 at 16:46:37.038798:
   ------------------------------------------------------------------------
   ACK sip:gw+P at 172.16.10.11:5080;transport=udp;gw=P SIP/2.0
   Max-Forwards: 66
   Via: SIP/2.0/UDP
217.0.23.100:5060;branch=z9hG4bKg3Zqkv7ij54ucc23me1yvy9vdmn4y96yh
   To: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   From:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_p65566t1484927148m25502c952768733s1_2334977008-822422466
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127511 ACK
   Contact:
<sip:sgc_c at 217.0.23.100;transport=udp>;+g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel"
   Content-Length: 0

   ------------------------------------------------------------------------
recv 1011 bytes from udp/[217.0.23.100]:5060 at 16:46:49.474526:
   ------------------------------------------------------------------------
   INVITE sip:gw+P at 172.16.10.11:5080;transport=udp;gw=P SIP/2.0
   Max-Forwards: 66
   Via: SIP/2.0/UDP
217.0.23.100:5060;branch=z9hG4bKg3Zqkv7imeyt2ir9sutpj4jtyixqf4yq3
   To: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   From:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_p65566t1484927148m25502c952768733s1_2334977008-822422466
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127512 INVITE
   Contact:
<sip:sgc_c at 217.0.23.100;transport=udp>;+g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel"
   Min-Se: 900
   Session-Expires: 1800;refresher=uac
   Supported: timer
   Supported: 100rel
   Content-Type: application/sdp
   Content-Length: 237
   Allow: REGISTER, REFER, NOTIFY, SUBSCRIBE, PRACK, UPDATE, PUBLISH,
INFO, INVITE, ACK, OPTIONS, CANCEL, BYE

   v=0
   o=- 1144933594 2336235028 IN IP4 217.0.23.100
   s=Basic Session
   c=IN IP4 217.0.4.167
   t=0 0
   a=recvonly
   m=audio 10224 RTP/AVP 8 101
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-15
   a=rtpmap:8 PCMA/8000
   a=ptime:20
   a=recvonly
   ------------------------------------------------------------------------
send 404 bytes to udp/[217.0.23.100]:5060 at 16:46:49.474824:
   ------------------------------------------------------------------------
   SIP/2.0 100 Trying
   Via: SIP/2.0/UDP
217.0.23.100:5060;branch=z9hG4bKg3Zqkv7imeyt2ir9sutpj4jtyixqf4yq3
   From:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_p65566t1484927148m25502c952768733s1_2334977008-822422466
   To: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127512 INVITE
   User-Agent: H6G Callserver
   Content-Length: 0

   ------------------------------------------------------------------------
send 963 bytes to udp/[217.0.23.100]:5060 at 16:46:49.767507:
   ------------------------------------------------------------------------
   SIP/2.0 200 OK
   Via: SIP/2.0/UDP
217.0.23.100:5060;branch=z9hG4bKg3Zqkv7imeyt2ir9sutpj4jtyixqf4yq3
   From:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_p65566t1484927148m25502c952768733s1_2334977008-822422466
   To: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127512 INVITE
   Contact: <sip:gw+P at 172.16.10.11:5080;transport=udp;gw=P>
   User-Agent: H6G Callserver
   Accept: application/sdp
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE,
REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
   Require: timer
   Supported: timer, path, replaces
   Session-Expires: 1800;refresher=uac
   Content-Type: application/sdp
   Content-Disposition: session
   Content-Length: 220

   v=0
   o=FreeSWITCH 1484904625 1484904628 IN IP4 172.16.10.11
   s=FreeSWITCH
   c=IN IP4 172.16.10.11
   t=0 0
   m=audio 22522 RTP/AVP 8 101
   a=rtpmap:8 PCMA/8000
   a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-16
   a=ptime:20
   ------------------------------------------------------------------------
recv 540 bytes from udp/[217.0.23.100]:5060 at 16:46:49.837652:
   ------------------------------------------------------------------------
   ACK sip:gw+P at 172.16.10.11:5080;transport=udp;gw=P SIP/2.0
   Max-Forwards: 66
   Via: SIP/2.0/UDP
217.0.23.100:5060;branch=z9hG4bKg3Zqkv7ishs6rygvv7pvgg3qpcfprg24g
   To: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   From:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_p65566t1484927148m25502c952768733s1_2334977008-822422466
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127512 ACK
   Contact:
<sip:sgc_c at 217.0.23.100;transport=udp>;+g.3gpp.icsi-ref="urn%3Aurn-7%3A3gpp-service.ims.icsi.mmtel"
   Content-Length: 0

   ------------------------------------------------------------------------
recv 577 bytes from udp/[217.0.23.100]:5060 at 16:47:03.694027:
   ------------------------------------------------------------------------
   BYE sip:gw+P at 172.16.10.11:5080;transport=udp;gw=P SIP/2.0
   Max-Forwards: 66
   Via: SIP/2.0/UDP
217.0.23.100:5060;branch=z9hG4bKg3Zqkv7i241fgoep8n7wg8m5jfzdz6q59
   To: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   From:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_p65566t1484927148m25502c952768733s1_2334977008-822422466
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127513 BYE
   Reason: Q.850;cause=16;eri-location=0
   Content-Length: 0
   Allow: REGISTER, REFER, NOTIFY, SUBSCRIBE, PRACK, UPDATE, PUBLISH,
INFO, INVITE, ACK, OPTIONS, CANCEL, BYE

   ------------------------------------------------------------------------
send 541 bytes to udp/[217.0.23.100]:5060 at 16:47:03.706495:
   ------------------------------------------------------------------------
   SIP/2.0 200 OK
   Via: SIP/2.0/UDP
217.0.23.100:5060;branch=z9hG4bKg3Zqkv7i241fgoep8n7wg8m5jfzdz6q59
   From:
<sip:022029****@tel.t-online.de>;tag=h7g4Esbg_p65566t1484927148m25502c952768733s1_2334977008-822422466
   To: "PhonerLite" <sip:0220224****@tel.t-online.de>;tag=5e8p22t558t9N
   Call-ID: 5a8f1143-59ca-1235-1283-408d5c1beb53
   CSeq: 102127513 BYE
   User-Agent: H6G Callserver
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE,
REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
   Supported: timer, path, replaces
   Content-Length: 0

   ------------------------------------------------------------------------
send 538 bytes to udp/[10.0.0.2]:5060 at 16:47:03.709373:
   ------------------------------------------------------------------------
   BYE sip:204 at 10.0.0.2:5060 SIP/2.0
   Via: SIP/2.0/UDP 172.16.10.11;rport;branch=z9hG4bK7rN6peF2S5pUB
   Max-Forwards: 70
   From: <sip:022029****@172.16.10.11>;tag=8XZN8mgHrg9aB
   To: "PhonerLite" <sip:204 at 172.16.10.11>;tag=2258694084
   Call-ID: 00DE6A2E-95DD-E611-A220-B1B68E4749C1 at 10.0.0.2
   CSeq: 102127547 BYE
   User-Agent: H6G Callserver
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE,
REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
   Supported: timer, path, replaces
   Reason: Q.850;cause=16;eri-location=0
   Content-Length: 0




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