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Strange DTMF problem

Discussion in '3CX Phone System - General' started by Bob Denny, May 11, 2009.

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  1. Bob Denny

    Bob Denny New Member

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    I have my DID number inbound-mapped to my IVR with "press 1 for Bob, 2 for Stephanie". It works fine, except... When I get a call from my partner who is running an Asterisk PABX and Grandstream phones, and he presses 1, my 3CX sees "111". For the time being I added an unregistered extension 111 that I ruled to my extension, so he still gets through to me. But this is strange. He claims that DTMF-ing from his phone works normally when not calling me...

    Any one have any ideas?
     
  2. leejor

    leejor Well-Known Member

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    I suspect that you are receiving both inband and out of band DTMF. That would normally result in double digits, not sure why you are getting 3.
     
  3. SY

    SY Well-Known Member
    3CX Support

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    Bob,

    It is the case which requires wireshark capture of incoming network traffic. As you specified, it works fine until your friend tries to use your IVR (using "*")
    Could you please ask him to help you to collect information?

    Thanks
     
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