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4.7
Activate/deactivate voice frequency
This feature depends on the system configuration. If necessary, contact your administrator. During a call, you
sometimes have to send DTMF signals, for example, for a voice message service, an automatic switchboard or when
remotely consulting an answering machine:
You are in conversation with one caller.
MFcode ?
To activate.
Sending DTMF signals.
MFcode ?
To deactivate.