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During a conversation
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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.
To activate DTMF mode:
•
■ MF code ?
•
To activate.
•
Sending DTMF signals.
To deactivate DTMF mode:
•
□ MF code ?
•
To deactivate.
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