User's Guide

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n EXTENDED FEATURES AND
FUNCTIONS
u Keypad (DTMF) Tones
Dual Tone Multi-Frequency (DTMF), or “Keypad Tone” signals
can be transmitted during a call by entering digits on the keypad
or recalling numbers from memory. By sending DTMF signals
you can gain access to special services such as voice mail and
answering machines that require long duration tones.
Keypad (DTMF) Tone Duration
You may select the time duration of Keypad (DTMF)
Tones either long tone (Long On) or short (Long off).
üü To toggle the Long Tone Time On or Off, “FNC”, “#”,
“8”.
The letters “DTMF Long On” or “”DTMF Long Off”
will appear in the display to indicate the mode.
If you select “DTMF Long On”, a continuous tone will
sound for up to 3 seconds when you press any key.
If you select “DTMF Long Off”, the tone duration will
be fixed to approximately 95 milliseconds.
Keypad (DTMF) Tone Mute
The “Keypad Tones” (DTMF) may be muted during a
conversation. For example, to store a number into the
Scratch Pad without interrupting your conversation.
üü To mute the keypad tones, press “FNC”, “3”.
üü To enable the keypad tones, press “FNC”, “3” again.
Sending DTMF Tones
üü From the Keypad:
Press keys “0” through “9”, “*”, or “#” to send DTMF