User's Manual

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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 contact.
• Send MF
• To activate.
• Sending DTMF signals.
• Deactivate MF
The function is automatically cancelled when you hang up. During a conversation, you can activate and
deactivate the DTMF mode by pressing the * key (long press).