Options During a Call26To switch the microphone off temporarily:♦Press the Mute soft key. The other person can no longer hear you.To switch the microphone back on:♦Press the Unmute soft key. The other person can hear you again.Muting or Sending Key TonesThese options allow you to turn the key tones off or on. If the Mutekeys option is selected, your phone does not transmit the DTMF(Dual Tone Multi-Frequency) tones of the keys, which allows you topress keys without hearing annoying key tones during a call.Note: To communicate with answering machines or computerized telephone systemsusing DTMF tones, the Send DTMF option must be selected.Sending a Sequence of DTMF TonesYou can send the DTMF tones after entering the entire number youneed to send. This option is helpful for entering a password or anaccount number when you call an automated system, like a bankingservice.To send the DTMF tones:1. When you are connected to the teleservice system, press theOptions soft key.2. Press the Down key to highlight the Send DTMF option.3. Press the Select soft key.4. Enter the number you want to send and press the OK soft key. Thetones are sent.