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Call Functions
Muting or Sending Key Tones
During a call, these options allow you to turn the key tones off or on. If the Disable Tones option is selected, your phone does not transmit the DTMF (Dual Tone
To turn the DTMF key tones off or on.
1During a call, press the Options soft key, and select Disable Tones to turn the key tones off.
2To turn them back on, press the Options soft key, and select Send Tones to turn the key tones on.
Note: To communicate with answering machines or computerized telephone systems, Key Tones must be set to On.
72 LG GD570 User Guide