No RTP Packets were recieved**firewall

Discussion in '3CX Phone System - General' started by mantalope, May 24, 2011.

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  1. mantalope

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    I am trying to remotely connect a 3CX Soft Phone (for PC and/or iPhone) to our 3CX system (V10).

    The phones register correctly and I can dial and connect, but there is no audio either way. The Server Activity Log is showing the error: No RTP packets were received.

    Phones inside the local network work without any issues. 9000 ports are opened on the firewall and the firewall logs do not show any blocked access notifications related to the phone IPs.

    Any advice to resolve this problem.
     
  2. davidbenwell

    davidbenwell Active Member

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    Re: No RTP Packets were recieved

    Hi, can you run the 3CX firewall Checker and post the output here for us to take a look at?
     
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  3. mantalope

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    Re: No RTP Packets were recieved

    Here is the results from the Firewall Checker


    3CX Firewall Checker, v1.0. Copyright (C) 3CX Ltd. All rights reserved.

    <17:11:41>: Phase 1, checking servers connection, please wait...
    <17:11:41>: Stun Checker service is reachable. Phase 1 check passed.
    <17:11:41>: Phase 2a, Check Port Forwarding to UDP SIP port, please wait...
    <17:11:41>: UDP SIP Port is set to 5060. Response received correctly with no translation. Phase 2a check passed.

    <17:11:41>: Phase 2b. Check Port Forwarding to TCP SIP port, please wait...
    <17:11:41>: TCP SIP Port is set to 5060. Response received correctly with no translation. Phase 2b check passed.

    <17:11:41>: Phase 3. Check Port Forwarding to TCP Tunnel port, please wait...
    <17:11:41>: TCP TUNNEL Port is set to 5090. Response received correctly with no translation. Phase 3 check passed.

    <17:11:41>: Phase 4. Check Port Forwarding to RTP external port range, please wait...
    <17:11:44>: UDP RTP Port 9000. Response received correctly with no translation. Phase 4-01 check passed.
    <17:11:44>: UDP RTP Port 9001. Response received correctly with no translation. Phase 4-02 check passed.
    <17:11:44>: UDP RTP Port 9002. Response received correctly with no translation. Phase 4-03 check passed.
    <17:11:44>: UDP RTP Port 9003. Response received correctly with no translation. Phase 4-04 check passed.
    <17:11:44>: UDP RTP Port 9004. Response received correctly with no translation. Phase 4-05 check passed.
    <17:11:44>: UDP RTP Port 9005. Response received correctly with no translation. Phase 4-06 check passed.
    <17:11:44>: UDP RTP Port 9006. Response received correctly with no translation. Phase 4-07 check passed.
    <17:11:44>: UDP RTP Port 9007. Response received correctly with no translation. Phase 4-08 check passed.
    <17:11:44>: UDP RTP Port 9008. Response received correctly with no translation. Phase 4-09 check passed.
    <17:11:44>: UDP RTP Port 9009. Response received correctly with no translation. Phase 4-10 check passed.
    <17:11:44>: UDP RTP Port 9010. Response received correctly with no translation. Phase 4-11 check passed.
    <17:11:44>: UDP RTP Port 9011. Response received correctly with no translation. Phase 4-12 check passed.
    <17:11:44>: UDP RTP Port 9012. Response received correctly with no translation. Phase 4-13 check passed.
    <17:11:44>: UDP RTP Port 9013. Response received correctly with no translation. Phase 4-14 check passed.
    <17:11:44>: UDP RTP Port 9014. Response received correctly with no translation. Phase 4-15 check passed.
    <17:11:44>: UDP RTP Port 9015. Response received correctly with no translation. Phase 4-16 check passed.
    <17:11:44>: UDP RTP Port 9016. Response received correctly with no translation. Phase 4-17 check passed.
    <17:11:44>: UDP RTP Port 9017. Response received correctly with no translation. Phase 4-18 check passed.
    <17:11:44>: UDP RTP Port 9018. Response received correctly with no translation. Phase 4-19 check passed.
    <17:11:44>: UDP RTP Port 9019. Response received correctly with no translation. Phase 4-20 check passed.
    <17:11:44>: UDP RTP Port 9020. Response received correctly with no translation. Phase 4-21 check passed.
    <17:11:44>: UDP RTP Port 9021. Response received correctly with no translation. Phase 4-22 check passed.
    <17:11:44>: UDP RTP Port 9022. Response received correctly with no translation. Phase 4-23 check passed.
    <17:11:44>: UDP RTP Port 9023. Response received correctly with no translation. Phase 4-24 check passed.
    <17:11:44>: UDP RTP Port 9024. Response received correctly with no translation. Phase 4-25 check passed.
    <17:11:44>: UDP RTP Port 9025. Response received correctly with no translation. Phase 4-26 check passed.
    <17:11:44>: UDP RTP Port 9026. Response received correctly with no translation. Phase 4-27 check passed.
    <17:11:44>: UDP RTP Port 9027. Response received correctly with no translation. Phase 4-28 check passed.
    <17:11:44>: UDP RTP Port 9028. Response received correctly with no translation. Phase 4-29 check passed.
    <17:11:44>: UDP RTP Port 9029. Response received correctly with no translation. Phase 4-30 check passed.
    <17:11:44>: UDP RTP Port 9030. Response received correctly with no translation. Phase 4-31 check passed.
    <17:11:44>: UDP RTP Port 9031. Response received correctly with no translation. Phase 4-32 check passed.
    <17:11:44>: UDP RTP Port 9032. Response received correctly with no translation. Phase 4-33 check passed.
    <17:11:44>: UDP RTP Port 9033. Response received correctly with no translation. Phase 4-34 check passed.
    <17:11:44>: UDP RTP Port 9034. Response received correctly with no translation. Phase 4-35 check passed.
    <17:11:44>: UDP RTP Port 9035. Response received correctly with no translation. Phase 4-36 check passed.
    <17:11:44>: UDP RTP Port 9036. Response received correctly with no translation. Phase 4-37 check passed.
    <17:11:44>: UDP RTP Port 9037. Response received correctly with no translation. Phase 4-38 check passed.
    <17:11:44>: UDP RTP Port 9038. Response received correctly with no translation. Phase 4-39 check passed.
    <17:11:44>: UDP RTP Port 9039. Response received correctly with no translation. Phase 4-40 check passed.
    <17:11:44>: UDP RTP Port 9040. Response received correctly with no translation. Phase 4-41 check passed.
    <17:11:44>: UDP RTP Port 9041. Response received correctly with no translation. Phase 4-42 check passed.
    <17:11:44>: UDP RTP Port 9042. Response received correctly with no translation. Phase 4-43 check passed.
    <17:11:44>: UDP RTP Port 9043. Response received correctly with no translation. Phase 4-44 check passed.
    <17:11:44>: UDP RTP Port 9044. Response received correctly with no translation. Phase 4-45 check passed.
    <17:11:44>: UDP RTP Port 9045. Response received correctly with no translation. Phase 4-46 check passed.
    <17:11:44>: UDP RTP Port 9046. Response received correctly with no translation. Phase 4-47 check passed.
    <17:11:44>: UDP RTP Port 9047. Response received correctly with no translation. Phase 4-48 check passed.
    <17:11:44>: UDP RTP Port 9048. Response received correctly with no translation. Phase 4-49 check passed.
    <17:11:44>: UDP RTP Port 9049. Response received correctly with no translation. Phase 4-50 check passed.


    Application exit code is 0
     
  4. nb

    nb Support Team
    Staff Member 3CX Support

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    Re: No RTP Packets were recieved

    Can you make a wireshark capture and send it to me nb@3cx.com
     
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  5. mantalope

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    Re: No RTP Packets were recieved

    Thanks for the help.

    It looks like it was a problem with my firewall. I did a firewall reboot (did not change any settings) and now I can hear audio both ways.

    Still need to test further to see if the problem reappears.
     
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