Calls start out ok and echoing starts getting worse

Discussion in '3CX Phone System - General' started by webguyz, Sep 11, 2007.

  1. webguyz

    webguyz New Member

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    Start out where the other end can here me OK and then starts deteriorating until they can't understand me.

    I am using an external extension with ATA (HT386) calling out through my Broadvoice voip provider. At this location my firewall has QOS for the 3cx IP address.

    What is that a symptom of? Where should I start looking to hunt this down?

    Thanks!!
     
  2. SY

    SY Well-Known Member
    3CX Staff

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    please specify metrics of "echoing" as well as configuration of 3CX host

    Thanks
     
  3. webguyz

    webguyz New Member

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    3cx pbx on a P4 with a gig of memory. Behind a firewall at a datacenter.

    External extension is a remote office with a d-link firewall and HT386 ata using our stun server (open source stun server on our pbx box)

    Inbound calls ok, outbound calls ok, registers ok.

    When talking to a customer today for about 20 minutes she remarked that it was getting harder and harder to understand me as the time went on because of garbleing. I heard her just fine on my end.

    Short conversations I have not had people tell me this was an issue. On longer calls others have said that the quality started getting worse.

    I guess the next step would be to bypass 3CX and hook up my ata to Broadvoice (my voip provider) and try making a long call to someone.

    Any other suggestion? should I be playing with gain on the ata? Could this be IP traffic issue? We have a big pipe at the datacenter and cable modem at the remote office.

    Thanks!
    Andy
     
  4. Ralph

    Ralph Member

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    Good morning

    I am also beginning to have echoing issues as well.

    My setup is very similar and I am also using BroadVoice.

    The echoing problem started to appear this week. It was not a problem before.

    Thanks again
     
  5. Anonymous

    Anonymous Guest

    Any change in weather pattern?

    bad wiring can help echo allong.

    Try to set your devices to use a prefered codec (in this case G711).
    Check impedance miss-match between phone and ata.
     
  6. webguyz

    webguyz New Member

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    What am I looking for in this regard?

    Had a lengthy conversation where someone called me and they had no problem hearing me in the 30 minutes we spoke, but I could hear my own voice echoing in my handset. What does that symptom indicate? Could that also be an impedance problem?

    Thanks!
     
  7. Ralph

    Ralph Member

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    Good morning

    Anyone?
     
  8. webguyz

    webguyz New Member

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    One symptom of this is wierd. Once the echoing starts, if you hold on a few minutes during the echoing, it stops and everything sounds good again. Most people hang up when the echoing gets bad, but had a friend I was talking with stay on the line a few extra minutes and it cleared up.

    What does that mean? ;-)
     

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