Alcatel-Lucent 8242 - Activate;Deactivate Voice Frequency

8242 DECT Handset
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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.