No Audio on external calls after IP change

Discussion in '3CX Phone System - General' started by gavpop, Apr 26, 2017.

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  1. gavpop

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    Hi All,

    I've recently had to change the IP on our 3CX server.
    I've gone through and changed the "parameters" in 3CX to reflect this.
    I've changed the various firewall rules to reflect this. 3CX firewall test says all OK.
    But I'm getting no audio on external calls. All was working fine before the IP change.

    here is wireshark from the server

    3cx1.JPG

    here is wireshark from the phone
    3cx2.JPG

    The one thing I find peculiar is that the phone isn't making the link direct to the external IP. I could be wrong, but I thought that's how 3CX works when "PBX delivers audio" is unchecked???

    Any insights?
     
  2. YiannisH_3CX

    YiannisH_3CX Support Team
    Staff Member 3CX Support

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    Hello @gavpop

    Did your local IP change? if yes then the only way to make sure that you won't face like these is to perform a backup without a licence and FQDN (save the backup to a non 3cx location), un-install and re-install using the backup and the new IP.
    Changing the IP in the parameters is not enough.
     
  3. gavpop

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    When you say uninstall/re-install - I'm assuming just rhe 3CX server? Not the whole Operating System?
     
  4. YiannisH_3CX

    YiannisH_3CX Support Team
    Staff Member 3CX Support

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    Yes just the 3CX server, no need to un-install the operating system
     
  5. gavpop

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    Thanks. I think I've cracked it.
     
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