no fax come in

Discussion in '3CX Phone System - General' started by Mann-IT, Aug 16, 2009.

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  1. Mann-IT

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    i can't geht any fax

    in the Mediaserver there are this log

    o=3cxPS 522895491072 56287559681 IN IP4 127.0.0.1
    s=3cxPS Audio call
    c=IN IP4 127.0.0.1
    t=0 0
    m=audio 7066 RTP/AVP 8 0 101
    c=IN IP4 127.0.0.1
    a=rtpmap:8 PCMA/8000
    a=rtpmap:0 PCMU/8000
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-16
    a=sendrecv

    14:54:18.296|.\MediaServer.cpp(1127)|Trace5||??:EndPoint 00000022@ removed from call 17
    14:54:48.625|.\MediaServer.cpp(1127)|Trace5||??:EndPoint 00000021@ removed from call 17
    14:54:48.671|.\MediaServer.cpp(886)|Trace5||??:references to EndPoint 00000021@ were removed
    14:54:48.671|.\MSEndPoint.cpp(686)|Trace5||??:EndPoint 00000021@ destroyed
    14:54:48.671|.\MSEndPoint.cpp(687)|Trace5||??:EndPoint 00000021@ destroyed statistics:
    Begin send:0
    LastSent:0
    TotalSent:0
    MaxSendInterval:0
    MinSendInterval:0
    AvgSendInterval:0
    SendDeviation:0
    Begin recv:0
    Last recv:0
    TotalRecv:0
    MaxRecvInterval:0
    MinRecvInterval:0
    AvgRecvInterval:0
    ReceiveDeviation:0

    14:54:48.671|.\RTPReceiver.cpp(127)|Trace5||??:Endpoint for socket 776 is not found!
    14:54:50.500|.\MediaServer.cpp(886)|Trace5||??:references to EndPoint 00000022@ were removed
    14:54:50.500|.\RTPReceiver.cpp(127)|Trace5||??:Endpoint for socket 508 is not found!
    14:54:50.500|.\MSEndPoint.cpp(686)|Trace5||??:EndPoint 00000022@ destroyed
    14:54:50.500|.\MSEndPoint.cpp(687)|Trace5||??:EndPoint 00000022@ destroyed statistics:
    Begin send:0
    LastSent:0
    TotalSent:0
    MaxSendInterval:0
    MinSendInterval:0
    AvgSendInterval:0
    SendDeviation:0
    Begin recv:0
    Last recv:0
    TotalRecv:0
    MaxRecvInterval:0
    MinRecvInterval:0
    AvgRecvInterval:0
    ReceiveDeviation:0

    14:54:50.515|.\MediaServer.cpp(1205)|Trace5||??:references to call 17 were removed
    14:54:50.515|.\MSCallConf.cpp(33)|Trace5||??:Call: 17 destroyed

    what is wrong?
     
  2. discovery1

    discovery1 Member

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    As far as 3CX is concerned incoming faxing is only supported through a PSTN gateway. From my experience the success you have from a VOIP provider is very hit and miss as they all seem to offer T.38 support but is is rarely full support.

    I've found that there are good logs of what is happening with incoming faxes stored at
    C:\Documents and Settings\All Users\Application Data\3CX\Data\Fax\Faxes
    and
    C:\Documents and Settings\All Users\Application Data\3CX\Data\Logs\FaxTraces

    I also use a wireshark capture to make sure i see the sequence of events from the incoming VOIP provider and make sure i see a T.38 invite in the stream.

    You can also download and install a test t.38 fax server from http://fax-voip.faxvoip-software.qarchive.org/ that allows you send T.38 faxes to 3CX for analysing receive issues.
     
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