Intermittent Choppy Voice Prompts

Discussion in '3CX Phone System - General' started by jof, Apr 16, 2008.

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  1. jof

    jof

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    Hello,

    We are currently using the latest version - 3cx Server v5.1.4393 and we are already using it in the production environment having linksys 3102 as our gateway. We noticed intermittent choppy voice prompt using voicemail system (9999) or even when listening to the digital receptionist. Sometimes it is ok, sometimes 1/4 of the entire recording is choppy. To isolate the problem, we decided to revert to the default english system prompts of 3CX but the problem still persists.

    We also tried to enable the option "pbx delivers audio" per extension and on the gateway but the choppiness got worst.

    What we have thoroughly tested was the feb release (no problem on sound quality) but we decided to roll this latest version on the production due to some linksys issues resolved by the recent version.

    I hope you can give us tips on how to fix this. Thanks.

    By the way, we are using licensed version.

    Regards,
    JoF
     
  2. h2009

    h2009 Member

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    To be honest it sounds like a Qos issue, that needs to be be addressed.
    Have you tried just the 3CX and one phone on the network (nothing else attached) this should tell you if its a QoS issue or not.

    Also have you looked at the codec type your using?
     
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  3. jof

    jof

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    Thank you so much for the reply.

    We were able to resolve the issue last night. The issue was resolve by upgrading the server and changing the switch on where it was connected. Because when we try to ping the 3CX server, we receive high latency of 3 to 4 ms. Upon moving the connection to another switch, latency became <1ms and resolved the choppy issue.

    Thanks.
     
  4. h2009

    h2009 Member

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    Glad to hear that it was all working - a simple QoS issue :)
     
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  5. Halea

    Halea New Member

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    Hello there:
    3 or 4 mS is not "high latency" by any measure, not even on a LAN. It couldn't have been the source of your choppy audio problem.
    Think about it for a second, if you have a VOIP handset connected to your LAN, directly registering onto your VOIP service provider's SIP server, how come that you can have an excellent voice communication with an average of 60-70mS ping time? I don't know many WAN links to the Internet offering you ping times in the magnitude that you are mentioning.
    You were probably having computer slow-down affecting your VOIP stream. By upgrading it you probably addressed it.
    Halea
     
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