DTMF not working while using Speakerphone

Discussion in '3CX Phone System - General' started by cpinero, Jun 17, 2008.

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  1. cpinero

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    I am using Linksys SPA922 phones and the DTMF works fine when using the handset, but does not work when using the speakerphone. Is there a setting that I have to change on the phone to allow this?
     
  2. archie

    archie Well-Known Member
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    Probably in speakerphone mode your mic catches beep and it interfere with inband DTMF. Try to switch to RFC mode (out of band).
     
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