Some platform related issues

Huo
2013-10-28
2014-07-11
  • Huo
    Huo
    2013-10-28

    Hi

    First of all, I have to say that I really appreciated to work with this application. However, in my environment some issues occurred, which I wanted to report.

    • If the username and the public id aren't the same (or only the phone number is accepted as public id) the registration fails, because there is no way to specify those attributes separately
    • Using the softphone in Linux can create some troubles because of the entry 127.0.1.1 in the hosts file. Can be solved by using NetworkInterface.getNetworkInterfaces()
    • When starting a second call after finishing the first, the started call will ignore the message 407 on terminating and the call will stay open. This is caused by the checked attribute in the ByeHandler, it's not reset on successful response.
    • Doesn't happen often, but in some cases (InviteHandler received a error response or does reject the call) the RTP DatagramSockt is set null, but not closed. If there is a call received before the natural timeout of the Socket, an BindException will be thrown. I don't know why, but after this there are no messages received after this, so that every request times out.
    • And a last thing: That one was really tricky. I registered, that the server I had to communicate with, sometimes didn't accept an answer to a 407 401 Message and sent a new challenge. These were often grouped. After examinations of the packages I noticed that all rejected responses to a 407 or a 401 had a hexadecimal value in nc. I focused on this and found the following sentence in the RFC 3261 Documentation "Hexadecimal numeric characters are used in several protocol elements. Some elements (authentication) force hex alphas to be lower case." (Page 164). And after making the nc lowercase, it worked properly.
      Huo
     
    Last edit: Huo 2013-11-18
  • aassh
    aassh
    2014-07-10

    No, there is no re-invite at the end of distortion but some option msgs.. I've used three systems running CentOS 6.5 and each shows the same behaviour. But other interesting behavious it sometime shows is delay but in this case there is no voice distortion. I filtered rtp packets on wirshark and played it, there voice was perfect. so there is no problem in network, pbx or anyother. Here is the log of last call..

    //////////////////////////////////////////////////////////////////////

    INVITE sip:111111@192.168.178.18:51323;transport=UDP SIP/2.0
    Via: SIP/2.0/UDP 192.168.178.15:5060;branch=z9hG4bK6135783e;rport
    Max-Forwards: 70
    From: "zoiperUser" sip:222205@192.168.178.15;tag=as04eede04
    To: sip:111111@192.168.178.18:51323;transport=UDP
    Contact: sip:222205@192.168.178.15:5060
    Call-ID: 5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060
    CSeq: 102 INVITE
    User-Agent: FPBX-2.11.0(11.10.2)
    Date: Thu, 10 Jul 2014 03:46:04 GMT
    Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
    Supported: replaces, timer
    P-Asserted-Identity: "zoiperUser" sip:222205@192.168.178.15
    Content-Type: application/sdp
    Content-Length: 287

    v=0
    o=root 1110713149 1110713149 IN IP4 192.168.178.15
    s=Asterisk PBX 11.10.2
    c=IN IP4 192.168.178.15
    t=0 0
    m=audio 12828 RTP/AVP 0 8 3 101
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=rtpmap:3 GSM/8000
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-16
    a=ptime:20
    a=sendrecv

    2014-07-10 08:46:00,152 DEBUG [TransportManager 0] SM z9hG4bK6135783e|INVITE [InviteServerTransactionStateInit -> InviteServerTransactionStateProceeding] setState
    2014-07-10 08:46:00,152 DEBUG [TransportManager 0] SM z9hG4bK6135783e|INVITE [InviteServerTransactionStateProceeding -> InviteServerTransactionStateProceeding] setState
    2014-07-10 08:46:00,152 DEBUG [TransportManager 0] SM z9hG4bK6135783e|INVITE [InviteServerTransactionStateProceeding -> InviteServerTransactionStateProceeding] setState
    2014-07-10 08:46:00,153 DEBUG [TransportManager 0] UdpMessageSender.sendMessage
    2014-07-10 08:46:00,153 DEBUG [TransportManager 0] UdpMessageSender.sendBytes
    2014-07-10 08:46:00,153 DEBUG [TransportManager 0] UdpMessageSender.sendBytes 358 /192.168.178.15:5060
    2014-07-10 08:46:00,153 DEBUG [TransportManager 0] /192.168.178.18
    2014-07-10 08:46:00,153 DEBUG [TransportManager 0] UdpMessageSender.sendBytes packet sent
    2014-07-10 08:46:00,153 SENT to 192.168.178.15/5060 [TransportManager 0]

    SIP/2.0 180 Ringing
    From: "zoiperUser" sip:222205@192.168.178.15;tag=as04eede04
    Call-ID: 5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060
    CSeq: 102 INVITE
    Via: SIP/2.0/UDP 192.168.178.15:5060;rport=5060;branch=z9hG4bK6135783e
    To: sip:111111@192.168.178.18:51323;transport=UDP;tag=CzrgpjTyyc
    Contact: <sip:192.168.178.18:51323;transport=UDP>

    2014-07-10 08:46:00,154 DEBUG [TransportManager 0] SM 5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060|as04eede04|CzrgpjTyyc [DialogStateInit -> DialogStateEarly] setState
    2014-07-10 08:46:00,185 DEBUG [AWT-EventQueue-0] SM 5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060 [CallFrameStateInit -> CallFrameStateUas] setState
    2014-07-10 08:46:00,366 DEBUG [TransactionManager Timer] SM z9hG4bKpxY8742me|REGISTER [NonInviteClientTransactionStateCompleted -> NonInviteClientTransactionStateTerminated] setState
    2014-07-10 08:46:00,533 DEBUG [TransactionManager Timer] SM z9hG4bKOn87Vd7hB|REGISTER [NonInviteClientTransactionStateCompleted -> NonInviteClientTransactionStateTerminated] setState
    2014-07-10 08:46:02,435 DEBUG [AWT-EventQueue-0] SM 5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060 [CallFrameStateUas -> CallFrameStateSuccess] setState
    2014-07-10 08:46:02,473 DEBUG [AWT-EventQueue-0] new rtp DatagramSocket 1107571654
    2014-07-10 08:46:02,477 DEBUG [AWT-EventQueue-0] SM z9hG4bK6135783e|INVITE [InviteServerTransactionStateProceeding -> InviteServerTransactionStateProceeding] setState
    2014-07-10 08:46:02,477 DEBUG [AWT-EventQueue-0] SM z9hG4bK6135783e|INVITE [InviteServerTransactionStateProceeding -> InviteServerTransactionStateTerminated] setState
    2014-07-10 08:46:02,477 DEBUG [AWT-EventQueue-0] UdpMessageSender.sendMessage
    2014-07-10 08:46:02,477 DEBUG [AWT-EventQueue-0] UdpMessageSender.sendBytes
    2014-07-10 08:46:02,477 DEBUG [AWT-EventQueue-0] UdpMessageSender.sendBytes 622 /192.168.178.15:5060
    2014-07-10 08:46:02,478 DEBUG [AWT-EventQueue-0] /192.168.178.18
    2014-07-10 08:46:02,478 DEBUG [AWT-EventQueue-0] UdpMessageSender.sendBytes packet sent
    2014-07-10 08:46:02,478 SENT to 192.168.178.15/5060 [AWT-EventQueue-0]

    SIP/2.0 200 OK
    From: "zoiperUser" sip:222205@192.168.178.15;tag=as04eede04
    Call-ID: 5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060
    CSeq: 102 INVITE
    Via: SIP/2.0/UDP 192.168.178.15:5060;rport=5060;branch=z9hG4bK6135783e
    To: sip:111111@192.168.178.18:51323;transport=UDP;tag=CzrgpjTyyc
    Content-Length: 217
    Content-Type: application/sdp
    Contact: <sip:192.168.178.18:51323;transport=UDP>

    v=0
    o=user1 1120745503 1305125956 IN IP4 192.168.178.18
    s=-
    c=IN IP4 192.168.178.18
    t=0 0
    m=audio 59234 RTP/AVP 0 8 101
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=rtpmap:101 telephone-event/8000
    a=sendrecv

    2014-07-10 08:46:02,478 DEBUG [AWT-EventQueue-0] SM 5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060|as04eede04|CzrgpjTyyc [DialogStateEarly -> DialogStateConfirmed] setState
    2014-07-10 08:46:02,479 RECEIVED from 192.168.178.15/5060 [TransportManager 0]

    ACK sip:192.168.178.18:51323;transport=UDP SIP/2.0
    Via: SIP/2.0/UDP 192.168.178.15:5060;branch=z9hG4bK68608dd5;rport
    Max-Forwards: 70
    From: "zoiperUser" sip:222205@192.168.178.15;tag=as04eede04
    To: sip:111111@192.168.178.18:51323;transport=UDP;tag=CzrgpjTyyc
    Contact: sip:222205@192.168.178.15:5060
    Call-ID: 5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060
    CSeq: 102 ACK
    User-Agent: FPBX-2.11.0(11.10.2)
    Content-Length: 0

    2014-07-10 08:46:02,480 DEBUG [TransportManager 0] handleAck
    2014-07-10 08:46:02,481 DEBUG [TransportManager 0] openAndStartLines
    2014-07-10 08:46:02,629 DEBUG [TransportManager 0] playback codec:a=rtpmap:0 PCMU/8000
    2014-07-10 08:46:20,367 DEBUG [UdpMessageSender Timer] UdpMessageSender.sendBytes
    2014-07-10 08:46:20,367 DEBUG [UdpMessageSender Timer] UdpMessageSender.sendBytes 4 /192.168.178.15:5060
    2014-07-10 08:46:20,367 DEBUG [UdpMessageSender Timer] /192.168.178.18
    2014-07-10 08:46:20,367 DEBUG [UdpMessageSender Timer] UdpMessageSender.sendBytes packet sent
    2014-07-10 08:46:45,367 DEBUG [UdpMessageSender Timer] UdpMessageSender.sendBytes
    2014-07-10 08:46:45,367 DEBUG [UdpMessageSender Timer] UdpMessageSender.sendBytes 4 /192.168.178.15:5060
    2014-07-10 08:46:45,367 DEBUG [UdpMessageSender Timer] /192.168.178.18
    2014-07-10 08:46:45,367 DEBUG [UdpMessageSender Timer] UdpMessageSender.sendBytes packet sent
    2014-07-10 08:46:56,558 RECEIVED from 192.168.178.15/5060 [TransportManager 0]

    //////////////////////////////////////////////////////////////////////////
    ////////somewhere at this point distortion ends///////////////////////////

    OPTIONS sip:111111@192.168.178.18:51323;transport=UDP SIP/2.0
    Via: SIP/2.0/UDP 192.168.178.15:5060;branch=z9hG4bK5916ac2f;rport
    Max-Forwards: 70
    From: "Unknown" sip:Unknown@192.168.178.15;tag=as3fec59ca
    To: sip:111111@192.168.178.18:51323;transport=UDP
    Contact: sip:Unknown@192.168.178.15:5060
    Call-ID: 5960a5301a18d3de7a6022073617ca4d@192.168.178.15:5060
    CSeq: 102 OPTIONS
    User-Agent: FPBX-2.11.0(11.10.2)
    Date: Thu, 10 Jul 2014 03:47:00 GMT
    Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
    Supported: replaces, timer
    Content-Length: 0

    2014-07-10 08:46:56,560 DEBUG [TransportManager 0] SM z9hG4bK5916ac2f|OPTIONS [NonInviteServerTransactionStateTrying -> NonInviteServerTransactionStateCompleted] setState
    2014-07-10 08:46:57,557 RECEIVED from 192.168.178.15/5060 [TransportManager 0]

    OPTIONS sip:111111@192.168.178.18:51323;transport=UDP SIP/2.0
    Via: SIP/2.0/UDP 192.168.178.15:5060;branch=z9hG4bK5916ac2f;rport
    Max-Forwards: 70
    From: "Unknown" sip:Unknown@192.168.178.15;tag=as3fec59ca
    To: sip:111111@192.168.178.18:51323;transport=UDP
    Contact: sip:Unknown@192.168.178.15:5060
    Call-ID: 5960a5301a18d3de7a6022073617ca4d@192.168.178.15:5060
    CSeq: 102 OPTIONS
    User-Agent: FPBX-2.11.0(11.10.2)
    Date: Thu, 10 Jul 2014 03:47:00 GMT
    Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
    Supported: replaces, timer
    Content-Length: 0

    2014-07-10 08:46:57,559 DEBUG [TransportManager 0] SM z9hG4bK5916ac2f|OPTIONS [NonInviteServerTransactionStateCompleted -> NonInviteServerTransactionStateCompleted] setState
    2014-07-10 08:46:57,560 DEBUG [TransportManager 0] UdpMessageSender.sendMessage
    2014-07-10 08:46:57,560 DEBUG [TransportManager 0] UdpMessageSender.sendBytes
    2014-07-10 08:46:57,560 DEBUG [TransportManager 0] UdpMessageSender.sendBytes 661 /192.168.178.15:5060
    2014-07-10 08:46:57,562 DEBUG [TransportManager 0] /192.168.178.18
    2014-07-10 08:46:57,562 DEBUG [TransportManager 0] UdpMessageSender.sendBytes packet sent
    2014-07-10 08:46:57,562 SENT to 192.168.178.15/5060 [TransportManager 0]

    SIP/2.0 200 OK
    From: "Unknown" sip:Unknown@192.168.178.15;tag=as3fec59ca
    Call-ID: 5960a5301a18d3de7a6022073617ca4d@192.168.178.15:5060
    CSeq: 102 OPTIONS
    Via: SIP/2.0/UDP 192.168.178.15:5060;rport=5060;branch=z9hG4bK5916ac2f
    To: sip:111111@192.168.178.18:51323;transport=UDP;tag=I6n5FRFtuF
    Content-Length: 215
    Content-Type: application/sdp
    Allow: INVITE, ACK, CANCEL, OPTIONS, BYE
    Contact: <sip:192.168.178.18:51323;transport=UDP>

    v=0
    o=user1 568090280 550376161 IN IP4 192.168.178.18
    s=-
    c=IN IP4 192.168.178.18
    t=0 0
    m=audio 56804 RTP/AVP 0 8 101
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=rtpmap:101 telephone-event/8000
    a=sendrecv

    2014-07-10 08:47:10,368 DEBUG [UdpMessageSender Timer] UdpMessageSender.sendBytes
    2014-07-10 08:47:10,368 DEBUG [UdpMessageSender Timer] UdpMessageSender.sendBytes 4 /192.168.178.15:5060

     
    • hi,

      when you replay captured rtp packets in wireshark, maybe packets are not
      played real-time. Thus, even if the voice is okay in this case, it doesn't
      prove that they are sent with the right interval. Rtp packets should be
      sent approximatively every 20 ms if I remember correctly. You can check
      that in wireshark capture in "Time" field.

      Can you send me the capture file? (yohann.martineau gmail)

      thanks,

      yohann

      On Thu, Jul 10, 2014 at 6:02 AM, aassh aassh@users.sf.net wrote:

      No, there is no re-invite at the end of distortion but some option msgs..
      I've used three systems running CentOS 6.5 and each shows the same
      behaviour. But other interesting behavious it sometime shows is delay but
      in this case there is no voice distortion. I filtered rtp packets on
      wirshark and played it, there voice was perfect. so there is no problem in
      network, pbx or anyother. Here is the log of last call..

      //////////////////////////////////////////////////////////////////////

      INVITE sip:111111@192.168.178.18:51323;transport=UDP SIP/2.0
      Via: SIP/2.0/UDP 192.168.178.15:5060;branch=z9hG4bK6135783e;rport
      Max-Forwards: 70
      From: "zoiperUser" sip:222205@192.168.178.15;tag=as04eede04
      To: sip:111111@192.168.178.18:51323;transport=UDP
      Contact: sip:222205@192.168.178.15:5060
      Call-ID: 5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060
      CSeq: 102 INVITE
      User-Agent: FPBX-2.11.0(11.10.2)
      Date: Thu, 10 Jul 2014 03:46:04 GMT
      Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
      PUBLISH, MESSAGE
      Supported: replaces, timer
      P-Asserted-Identity: "zoiperUser" sip:222205@192.168.178.15
      Content-Type: application/sdp
      Content-Length: 287

      v=0
      o=root 1110713149 1110713149 IN IP4 192.168.178.15
      s=Asterisk PBX 11.10.2
      c=IN IP4 192.168.178.15
      t=0 0
      m=audio 12828 RTP/AVP 0 8 3 101
      a=rtpmap:0 PCMU/8000
      a=rtpmap:8 PCMA/8000
      a=rtpmap:3 GSM/8000
      a=rtpmap:101 telephone-event/8000
      a=fmtp:101 0-16
      a=ptime:20
      a=sendrecv

      2014-07-10 08:46:00,152 DEBUG [TransportManager 0] SM
      z9hG4bK6135783e|INVITE [InviteServerTransactionStateInit ->
      InviteServerTransactionStateProceeding]
      setState
      2014-07-10 08:46:00,152 DEBUG [TransportManager 0] SM
      z9hG4bK6135783e|INVITE [InviteServerTransactionStateProceeding ->
      InviteServerTransactionStateProceeding]
      setState
      2014-07-10 08:46:00,152 DEBUG [TransportManager 0] SM
      z9hG4bK6135783e|INVITE [InviteServerTransactionStateProceeding ->
      InviteServerTransactionStateProceeding]
      setState
      2014-07-10 08:46:00,153 DEBUG [TransportManager 0]
      UdpMessageSender.sendMessage
      2014-07-10 08:46:00,153 DEBUG [TransportManager 0]
      UdpMessageSender.sendBytes
      2014-07-10 08:46:00,153 DEBUG [TransportManager 0]
      UdpMessageSender.sendBytes 358 /192.168.178.15:5060
      2014-07-10 08:46:00,153 DEBUG [TransportManager 0] /192.168.178.18
      2014-07-10 08:46:00,153 DEBUG [TransportManager 0]
      UdpMessageSender.sendBytes packet sent
      2014-07-10 08:46:00,153 SENT to 192.168.178.15/5060 [TransportManager 0]

      SIP/2.0 180 Ringing
      From: "zoiperUser" sip:222205@192.168.178.15;tag=as04eede04
      Call-ID: 5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060
      CSeq: 102 INVITE
      Via: SIP/2.0/UDP 192.168.178.15:5060;rport=5060;branch=z9hG4bK6135783e
      To: sip:111111@192.168.178.18:51323;transport=UDP;tag=CzrgpjTyyc
      Contact: <sip:192.168.178.18:51323;transport=UDP>

      2014-07-10 08:46:00,154 DEBUG [TransportManager 0] SM
      5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060|as04eede04|CzrgpjTyyc
      [DialogStateInit -> DialogStateEarly] setState
      2014-07-10 08:46:00,185 DEBUG [AWT-EventQueue-0] SM
      5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060 [CallFrameStateInit
      -> CallFrameStateUas]
      setState
      2014-07-10 08:46:00,366 DEBUG [TransactionManager Timer] SM
      z9hG4bKpxY8742me|REGISTER [NonInviteClientTransactionStateCompleted ->
      NonInviteClientTransactionStateTerminated]
      setState
      2014-07-10 08:46:00,533 DEBUG [TransactionManager Timer] SM
      z9hG4bKOn87Vd7hB|REGISTER [NonInviteClientTransactionStateCompleted ->
      NonInviteClientTransactionStateTerminated]
      setState
      2014-07-10 08:46:02,435 DEBUG [AWT-EventQueue-0] SM
      5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060 [CallFrameStateUas
      -> CallFrameStateSuccess]
      setState
      2014-07-10 08:46:02,473 DEBUG [AWT-EventQueue-0] new rtp DatagramSocket
      1107571654
      2014-07-10 08:46:02,477 DEBUG [AWT-EventQueue-0] SM
      z9hG4bK6135783e|INVITE [InviteServerTransactionStateProceeding ->
      InviteServerTransactionStateProceeding]
      setState
      2014-07-10 08:46:02,477 DEBUG [AWT-EventQueue-0] SM
      z9hG4bK6135783e|INVITE [InviteServerTransactionStateProceeding ->
      InviteServerTransactionStateTerminated]
      setState
      2014-07-10 08:46:02,477 DEBUG [AWT-EventQueue-0]
      UdpMessageSender.sendMessage
      2014-07-10 08:46:02,477 DEBUG [AWT-EventQueue-0]
      UdpMessageSender.sendBytes
      2014-07-10 08:46:02,477 DEBUG [AWT-EventQueue-0]
      UdpMessageSender.sendBytes 622 /192.168.178.15:5060
      2014-07-10 08:46:02,478 DEBUG [AWT-EventQueue-0] /192.168.178.18
      2014-07-10 08:46:02,478 DEBUG [AWT-EventQueue-0]
      UdpMessageSender.sendBytes packet sent
      2014-07-10 08:46:02,478 SENT to 192.168.178.15/5060 [AWT-EventQueue-0]

      SIP/2.0 200 OK
      From: "zoiperUser" sip:222205@192.168.178.15;tag=as04eede04
      Call-ID: 5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060
      CSeq: 102 INVITE
      Via: SIP/2.0/UDP 192.168.178.15:5060;rport=5060;branch=z9hG4bK6135783e
      To: sip:111111@192.168.178.18:51323;transport=UDP;tag=CzrgpjTyyc
      Content-Length: 217
      Content-Type: application/sdp
      Contact: <sip:192.168.178.18:51323;transport=UDP>

      v=0
      o=user1 1120745503 1305125956 IN IP4 192.168.178.18
      s=-
      c=IN IP4 192.168.178.18
      t=0 0
      m=audio 59234 RTP/AVP 0 8 101
      a=rtpmap:0 PCMU/8000
      a=rtpmap:8 PCMA/8000
      a=rtpmap:101 telephone-event/8000
      a=sendrecv

      2014-07-10 08:46:02,478 DEBUG [AWT-EventQueue-0] SM
      5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060|as04eede04|CzrgpjTyyc
      [DialogStateEarly -> DialogStateConfirmed] setState
      2014-07-10 08:46:02,479 RECEIVED from 192.168.178.15/5060 [TransportManager
      0]

      ACK sip:192.168.178.18:51323;transport=UDP SIP/2.0
      Via: SIP/2.0/UDP 192.168.178.15:5060;branch=z9hG4bK68608dd5;rport
      Max-Forwards: 70
      From: "zoiperUser" sip:222205@192.168.178.15;tag=as04eede04
      To: sip:111111@192.168.178.18:51323;transport=UDP;tag=CzrgpjTyyc
      Contact: sip:222205@192.168.178.15:5060
      Call-ID: 5718f9ef46617af07bdddf590c81801e@192.168.178.15:5060
      CSeq: 102 ACK
      User-Agent: FPBX-2.11.0(11.10.2)
      Content-Length: 0

      2014-07-10 08:46:02,480 DEBUG [TransportManager 0] handleAck
      2014-07-10 08:46:02,481 DEBUG [TransportManager 0] openAndStartLines
      2014-07-10 08:46:02,629 DEBUG [TransportManager 0] playback
      codec:a=rtpmap:0 PCMU/8000
      2014-07-10 08:46:20,367 DEBUG [UdpMessageSender Timer]
      UdpMessageSender.sendBytes
      2014-07-10 08:46:20,367 DEBUG [UdpMessageSender Timer]
      UdpMessageSender.sendBytes 4 /192.168.178.15:5060
      2014-07-10 08:46:20,367 DEBUG [UdpMessageSender Timer] /192.168.178.18
      2014-07-10 08:46:20,367 DEBUG [UdpMessageSender Timer]
      UdpMessageSender.sendBytes packet sent
      2014-07-10 08:46:45,367 DEBUG [UdpMessageSender Timer]
      UdpMessageSender.sendBytes
      2014-07-10 08:46:45,367 DEBUG [UdpMessageSender Timer]
      UdpMessageSender.sendBytes 4 /192.168.178.15:5060
      2014-07-10 08:46:45,367 DEBUG [UdpMessageSender Timer] /192.168.178.18
      2014-07-10 08:46:45,367 DEBUG [UdpMessageSender Timer]
      UdpMessageSender.sendBytes packet sent
      2014-07-10 08:46:56,558 RECEIVED from 192.168.178.15/5060 [TransportManager
      0]

      //////////////////////////////////////////////////////////////////////////
      ////////somewhere at this point distortion ends///////////////////////////

      OPTIONS sip:111111@192.168.178.18:51323;transport=UDP SIP/2.0
      Via: SIP/2.0/UDP 192.168.178.15:5060;branch=z9hG4bK5916ac2f;rport
      Max-Forwards: 70
      From: "Unknown" sip:Unknown@192.168.178.15;tag=as3fec59ca
      To: sip:111111@192.168.178.18:51323;transport=UDP
      Contact: sip:Unknown@192.168.178.15:5060
      Call-ID: 5960a5301a18d3de7a6022073617ca4d@192.168.178.15:5060
      CSeq: 102 OPTIONS
      User-Agent: FPBX-2.11.0(11.10.2)
      Date: Thu, 10 Jul 2014 03:47:00 GMT
      Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
      PUBLISH, MESSAGE
      Supported: replaces, timer
      Content-Length: 0

      2014-07-10 08:46:56,560 DEBUG [TransportManager 0] SM
      z9hG4bK5916ac2f|OPTIONS [NonInviteServerTransactionStateTrying ->
      NonInviteServerTransactionStateCompleted]
      setState
      2014-07-10 08:46:57,557 RECEIVED from 192.168.178.15/5060 [TransportManager
      0]

      OPTIONS sip:111111@192.168.178.18:51323;transport=UDP SIP/2.0
      Via: SIP/2.0/UDP 192.168.178.15:5060;branch=z9hG4bK5916ac2f;rport
      Max-Forwards: 70
      From: "Unknown" sip:Unknown@192.168.178.15;tag=as3fec59ca
      To: sip:111111@192.168.178.18:51323;transport=UDP
      Contact: sip:Unknown@192.168.178.15:5060
      Call-ID: 5960a5301a18d3de7a6022073617ca4d@192.168.178.15:5060
      CSeq: 102 OPTIONS
      User-Agent: FPBX-2.11.0(11.10.2)
      Date: Thu, 10 Jul 2014 03:47:00 GMT
      Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO,
      PUBLISH, MESSAGE
      Supported: replaces, timer
      Content-Length: 0

      2014-07-10 08:46:57,559 DEBUG [TransportManager 0] SM
      z9hG4bK5916ac2f|OPTIONS [NonInviteServerTransactionStateCompleted ->
      NonInviteServerTransactionStateCompleted]
      setState
      2014-07-10 08:46:57,560 DEBUG [TransportManager 0]
      UdpMessageSender.sendMessage
      2014-07-10 08:46:57,560 DEBUG [TransportManager 0]
      UdpMessageSender.sendBytes
      2014-07-10 08:46:57,560 DEBUG [TransportManager 0]
      UdpMessageSender.sendBytes 661 /192.168.178.15:5060
      2014-07-10 08:46:57,562 DEBUG [TransportManager 0] /192.168.178.18
      2014-07-10 08:46:57,562 DEBUG [TransportManager 0]
      UdpMessageSender.sendBytes packet sent
      2014-07-10 08:46:57,562 SENT to 192.168.178.15/5060 [TransportManager 0]

      SIP/2.0 200 OK
      From: "Unknown" sip:Unknown@192.168.178.15;tag=as3fec59ca
      Call-ID: 5960a5301a18d3de7a6022073617ca4d@192.168.178.15:5060
      CSeq: 102 OPTIONS
      Via: SIP/2.0/UDP 192.168.178.15:5060;rport=5060;branch=z9hG4bK5916ac2f
      To: sip:111111@192.168.178.18:51323;transport=UDP;tag=I6n5FRFtuF
      Content-Length: 215
      Content-Type: application/sdp
      Allow: INVITE, ACK, CANCEL, OPTIONS, BYE
      Contact: <sip:192.168.178.18:51323;transport=UDP>

      v=0
      o=user1 568090280 550376161 IN IP4 192.168.178.18
      s=-
      c=IN IP4 192.168.178.18
      t=0 0
      m=audio 56804 RTP/AVP 0 8 101
      a=rtpmap:0 PCMU/8000
      a=rtpmap:8 PCMA/8000
      a=rtpmap:101 telephone-event/8000
      a=sendrecv

      2014-07-10 08:47:10,368 DEBUG [UdpMessageSender Timer]
      UdpMessageSender.sendBytes
      2014-07-10 08:47:10,368 DEBUG [UdpMessageSender Timer]
      UdpMessageSender.sendBytes 4 /192.168.178.15:5060


      Some platform related issues
      https://sourceforge.net/p/peers/discussion/683023/thread/68d372e2/?limit=25#3721


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