RTP Packets

Discussion in '3CX Phone System - General' started by Hjalmar, Sep 4, 2007.

  1. Hjalmar

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    16:31:49.505 MediaServerReporting::RTPReceiver [MS105000] Call(1) Ln:10000@Budgetphone: No RTP packets were received on 00000001@:remoteAddr=85.17.186.6:61238,extAddr=84.104.196.236:9000,localAddr=0.0.0.0:9000

    Do anyone know this problem, and how to sovle it ?
     
  2. nickybrg

    nickybrg Well-Known Member
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    Firewall issue - NAT issue. Check your firewall. You have one way audio.
     
  3. Hjalmar

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    Do you have a port that i can allow?
     
  4. 5qg4

    5qg4 Active Member

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    Please take a look at this post. List of default ports used by the 3cx phonesystem
    http://www.3cx.com/forums/viewtopic.php?t=1697
     
  5. SY

    SY Well-Known Member
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    Please pay attention that firewall problems can "live" not only on PBX host, and happen not only with 3CX :)

    Check route from remoteAddr=85.17.186.6 to extAddr=84.104.196.236 regarding to firewalls... If these addresses are gateway addresses, then check route from local entity (PBX, or phone on other side) to its gateway. as well as check NAT device.

    Also, please use search on forum before describing your problem in new thread, because your problem could be discussed already.

    For example:
    http://www.3cx.com/forums/viewtopic.php?t=2201&start=0&postdays=0&postorder=asc&highlight=
    There is a ryan's story about fighting with network. I hope you will find some hints there...

    Specified message means exact what it says. No RTP stream were received by PBX from remote party 85.17.186.6:61238

    Regards
     
  6. Hjalmar

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    Problem has been solved. It's a firewall in Windows 2000.
     
  7. nickybrg

    nickybrg Well-Known Member
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    Good - happy your problem is resolved. Enjoy 3CX Phonesystem
     
  8. stef69

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    Same problem but no firewall

    same problem but no firewall i post my config


    remote SIP:
    software sip X-lite with public STUN
    laptop on the DMZ
    no firewall on laptop
    extention configured as external and bind to media server


    3CX server:
    no firewall
    server beind router all port forward to the local port host.


    extention registered: OK
    ringing internal : OK
    ringing external: OK
    But

    no sound external and internal

    piece of log calling extention 101 from 100

    [MS105000] Call(2) Ext.100: No RTP packets were received on 00000004@:remoteAddr=82.229.204.XXX:11216,extAddr=81.80.23.XXX:35121,localAddr=0.0.0.0:9006
     
  9. SY

    SY Well-Known Member
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    Re: Same problem but no firewall

    Check routing and packet delivery between specified hosts. (from 82.229.204.XXX to 81.80.23.XXX)

    BTW, your PBXHost:9006 translated to 81.80.23.XXX:35121. Is it expected?

    Regards
     
  10. stef69

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    thanx for your quick answer


    [MS105000] Call(2) Ext.100: No RTP packets were received on 00000004@:remoteAddr=82.229.204.XXX:11216,extAddr=81.80.23.XXX:35121,localAddr=0.0.0.0:9006

    localAddr=0.0.0.0:9006 isnt a problem ?


    Check routing and packet delivery between specified hosts. (from 82.229.204.XXX to 81.80.23.XXX)
    how can i do ? a tracert command in a prompt ?


    BTW, your PBXHost:9006 translated to 81.80.23.XXX:35121. Is it expected?
    its when packet went from Private IP HOST ----> Router ---> external IP Adress ?
    its configured in the router ?
     
  11. SY

    SY Well-Known Member
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    No, it is not. extAddr=0.0.0.0 for local destinations and localAddr=0.0.0.0 for external. If both will be(or not be) a 0.0.0.0 then it will be a problem in software :)


    I think tracert will not help you, because it just checks general accessibility of host. There are lot of things that can have an influence in specific case.

    Yes, "Router" in your scheme is responsible entity. In general, Router has Firewall and NAT built-in.

    Please pay attention that your scheme is symmetric, I mean not only 3CX host configuration influences delivery of audio and/or signaling

    Full scheme is:

    Private IP HOST <----> Router <---> external IP Adress <--->INTERNET<----->external IP Address2<------->Router2<------->Private IP HOST2

    Regards
     

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