3CX no audio on internall calls

Discussion in '3CX Phone System - General' started by zosselp, Nov 23, 2016.

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  1. zosselp

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    Hello again,

    I've successfully setup a 3CX server on my MiniPC and while waiting for voip phones to arrive I thought to myself that I could test it little bit. Therefore I have setup two extensions ( Softphones, 3CX clients ) on Windows 10.
    Now when calling from one extension to the other theres no audio at all - the ringtones are working fine, I can hear them.

    I've configured firewall on my Mikrotik RB3011 router and successfully run firewall test on 3CX Phone System Management WEB Console - all necessary ports are open.

    PBX Deliver audio on those two extensions is disabled by default.

    What can cause this problem. I've read a lot of threads but did not found any solution to this problem.

    Bitdefender firewall on 3CX clients is turned off.

    Below you will find log from one call with no audio.
    Code:
    11/23/2016 8:30:01 AM - Leg L:4.2[Extn] is terminated: Cause: BYE from local
    11/23/2016 8:30:01 AM - [CM503008]: Call(C:4): Call is terminated
    11/23/2016 8:30:01 AM - Leg L:4.1[Extn] is terminated: Cause: BYE from 192.168.0.30:51835
    11/23/2016 8:29:50 AM - [CM503007]: Call(C:4): Extn:04 has joined, contact <sip:04@192.168.0.11:52484>
    11/23/2016 8:29:50 AM - [CM503007]: Call(C:4): Extn:01 has joined, contact <sip:01@192.168.0.30:51835>
    11/23/2016 8:29:50 AM - L:4.2[Extn] has joined to L:4.1[Extn]
    11/23/2016 8:29:47 AM - [CM505001]: Endpoint Extn:04: Device info: Device Not Identified: User Agent not matched; Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [3CXPhone for Windows 15.0.59381.0] PBX contact: [sip:04@192.168.0.9:5060]
    11/23/2016 8:29:47 AM - [CM503002]: Call(C:4): Alerting Extn:04 by contact <sip:04@192.168.0.11:52484>
    11/23/2016 8:29:47 AM - [CM503025]: Call(C:4): Calling T:Extn:04@[Dev:sip:04@192.168.0.11:52484;rinstance=0-ba7b32ff8acd4bb5ba3a9eb03a138a0e;ob] for L:4.1[Extn]
    11/23/2016 8:29:47 AM - [CM503027]: Call(C:4): From: Extn:01 ("Paweł *****" <sip:01@192.168.0.9:5060>)  to  T:Extn:04@[Dev:sip:04@192.168.0.11:52484;rinstance=0-ba7b32ff8acd4bb5ba3a9eb03a138a0e;ob]
    11/23/2016 8:29:47 AM - [CM503004]: Call(C:4): Route 1: from L:4.1[Extn] to T:Extn:04@[Dev:sip:04@192.168.0.11:52484;rinstance=0-ba7b32ff8acd4bb5ba3a9eb03a138a0e;ob]
    11/23/2016 8:29:47 AM - [Flow] No office hours set, office hours assumed
    11/23/2016 8:29:47 AM - [Flow] Call(C:4): has built target endpoint: Extn:04 for call from L:4.1[Extn]
    11/23/2016 8:29:47 AM - [Flow] Target endpoint for 04 is Extn:04
    11/23/2016 8:29:47 AM - [CM503010]: Call(C:4): Making route(s) from Extn:01 to <sip:04@192.168.0.9:5060>
    11/23/2016 8:29:47 AM - [CM505001]: Endpoint Extn:01: Device info: Device Not Identified: User Agent not matched; Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [3CXPhone for Windows 15.0.59381.0] PBX contact: [sip:01@192.168.0.9:5060]
    11/23/2016 8:29:47 AM - [CM500002]: Call(C:4): Info on incoming INVITE from Extn:01:
    Invite-IN Recv Req INVITE from 192.168.0.30:52195 tid=Pjdc2b088f373c4665a4d6b7c8f33c4802 Call-ID=831056a6ba9648129c73dbbc8d5ea996:
    INVITE sip:04@192.168.0.9;tag3cx=cedef826cd684a7a86c777f0fa8d1556 SIP/2.0
    Via: SIP/2.0/TCP 192.168.0.30:52195;rport=52195;branch=z9hG4bKPjdc2b088f373c4665a4d6b7c8f33c4802;alias
    Max-Forwards: 70
    Contact: "Paweł ****" <sip:01@192.168.0.30:51835;rinstance=0-66016f3add454c8d975fbd1f6b972ffd;ob>
    To: <sip:04@192.168.0.9;tag3cx=cedef826cd684a7a86c777f0fa8d1556>
    From: "Paweł ****"<sip:01@192.168.0.9>;tag=e44e0fc5764c47cd848b7b7755cf24ee
    Call-ID: 831056a6ba9648129c73dbbc8d5ea996
    CSeq: 11512 INVITE
    Session-Expires: 1800
    Min-SE: 90
    Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS
    Content-Type: application/sdp
    Proxy-Authorization: Digest username="01",realm="3CXPhoneSystem",nonce="414d53595835456a38:f3ce3a87391e56fb9c3eb89129967655",uri="sip:04@192.168.0.9;tag3cx=cedef826cd684a7a86c777f0fa8d1556",response="0be25347c307cde6f36ba3c2347d23ab",algorithm=MD5
    Supported: replaces, 100rel, timer, norefersub
    User-Agent: 3CXPhone for Windows 15.0.59381.0
    Content-Length: 351
    
    v=0
    o=- 3688878586 3688878586 IN IP4 192.168.0.30
    s=pjmedia
    b=AS:84
    t=0 0
    a=X-nat:0
    m=audio 42000 RTP/AVP 0 8 3 96
    c=IN IP4 192.168.0.30
    b=TIAS:64000
    b=AS:84
    a=rtcp:42001
    a=sendrecv
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=rtpmap:3 GSM/8000
    a=rtpmap:96 telephone-event/8000
    a=fmtp:96 0-15
    m=video 0 RTP/AVP 31
    c=IN IP4 127.0.0.1
    11/23/2016 8:29:47 AM - [CM503001]: Call(C:4): Incoming call from Extn:01 to <sip:04@192.168.0.9:5060>
     
  2. netswork

    netswork Active Member

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    Are your two 3cx clients on the same LAN as the 3cx server?
     
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  3. netswork

    netswork Active Member

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    From the looks of your logs it appears that the clients and 3cx are on the same 192.168 network. Have you tried disabling the windows firewall on these computers?
     
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