Yes but I found f1=1 and f2 =2 or f1=-1 and f2=-1 in a tone segment, trying to match with a specific descriptor. So which value is matching? Thanks for your time Enviado desde mi iPhone El 26/01/2018, a la(s) 14:38, Guillermo Ruiz Camauer <grcamauer@gmail.com> escribió:

Frequency 1 and frequency 2. All DTMF are composed using 2 frequencies.

Guillermo

Sent from my iPhone

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On 26 Jan 2018, at 08:50, Raimundo Pérez Nieves <raimundo.perez.cuba@gmail.com> wrote:

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