what's type of DTMF should I used in IP-Phone

Discussion in '3CX Phone System - General' started by lotsu99, Dec 23, 2008.

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  1. lotsu99

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    what's type of DTMF should I used in IP-Phone ?
    Inband or Outband ?? Thx
     
  2. William400

    William400 Well-Known Member

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    Hi

    It would be best to use RFC2833 for DTMF. It is the most reliable.
     
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  3. Powermage

    Powermage New Member

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    The most important thing is what your voip provider support's,
    the problem is that when you dont have a provider that isnt using the RFC DTMF you will have problems when 3cx is delivering audio (by default on you voip line)
     
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