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RTP Problem

Discussion in '3CX Phone System - General' started by cangurer, Jan 16, 2015.

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  1. cangurer

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    Hi,

    We have RTP ip problem between 3cx and our voip provider.
    This issue cause voice issue and users cannot hear customers voice sometimes.
    This is not permanent, it happens randomly especially if we have high sim calls around 35-40

    Our Voip provider says we see Yealink ip phone's ip instead of 3cx ip and that cause the issue.

    here is an example log: first one has a problem but second one is ok.

    Any idea?


    INVITE sip:05354554281@85.29.45.11:5060 SIP/2.0
    Via: SIP/2.0/UDP 10.37.3.86:5060;branch=z9hG4bK-d8754z-4711260f7a0e0a0c-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:02123450062@10.37.3.86:5060>
    To: <sip:05354554281@85.29.45.11:5060>
    From: "02123450062"<sip:02123450062@85.29.45.11:5060>;tag=7e06d947
    Call-ID: MmRkMTgxOGM3Y2VkMDk0MmJkZmRkYTRkMTI0OWI4ODg.
    CSeq: 1 INVITE
    Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
    Content-Type: application/sdp
    Supported: replaces
    User-Agent: 3CXPhoneSystem 12.0.37098.738 (34969)
    Content-Length: 310

    v=0
    o=- 21617 21617 IN IP4 192.168.10.226
    s=SDP data
    c=IN IP4 192.168.10.226
    t=0 0
    m=audio 11780 RTP/AVP 8 0 18 9 101
    a=rtpmap:8 PCMA/8000
    a=rtpmap:0 PCMU/8000
    a=rtpmap:18 G729/8000
    a=fmtp:18 annexb=no
    a=rtpmap:9 G722/8000
    a=fmtp:101 0-15
    a=rtpmap:101 telephone-event/8000
    a=ptime:20



    INVITE sip:05495497707@85.29.45.11:5060 SIP/2.0
    Via: SIP/2.0/UDP 10.37.3.86:5060;branch=z9hG4bK-d8754z-d622f06f8839df1a-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:02123450062@10.37.3.86:5060>
    To: <sip:05495497707@85.29.45.11:5060>
    From: "02123450062"<sip:02123450062@85.29.45.11:5060>;tag=c329c841
    Call-ID: ZWY1ZDMxOGIzN2FiMzIzOTA2MTVlODFmZDdjMDk5NDE.
    CSeq: 1 INVITE
    Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
    Content-Type: application/sdp
    Supported: replaces
    User-Agent: 3CXPhoneSystem 12.0.37098.738 (34969)
    Content-Length: 320

    v=0
    o=3cxPS 450032041984 57596182529 IN IP4 10.37.3.86
    s=3cxPS Audio call
    c=IN IP4 10.37.3.86
    t=0 0
    m=audio 9048 RTP/AVP 8 0 18 9 3 101
    a=rtpmap:8 PCMA/8000
    a=rtpmap:0 PCMU/8000
    a=rtpmap:18 G729/8000
    a=fmtp:18 annexb=no
    a=rtpmap:9 G722/8000
    a=rtpmap:3 GSM/8000
    a=rtpmap:101 telephone-event/8000
     
  2. cangurer

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    I just realize that, problematic calls uses port from invalid range,

    m=audio 11780 RTP/AVP 8 0 18 9 101
     
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