10. Touch Tones
Your phone can generate various sounds, called Touch
Tones, when the keys are pressed.
Touch Tones can be used for many automated, over-
the-phone services such as checking bank balances,
airline arrival and departure times, and using voice mailbox
options. Touch Tones can be sent only when a call is
active.
What is DTMF?
Touch Tones are also known as DTMF, which means
Dual Tone Multi-Frequency, and they are generated either
manually or automatically.
Note: Individual Touch Tones can be sent manually only if
0HQX
4 3 is set to On.