Call Functions 18Example: You wish to say something to a person in the room, but do not want theperson on the phone to hear you.During a call, to switch the microphone off temporarily:1. Press the Mute. Unmute displays.2. Press the Unmute to deactivate the Mute function.Muting or Sending Key TonesThese options allow you to turn the key tones off or on. If theMute Keys option is selected, your phone does not transmit theDTMF (Dual Tone Multi-Frequency) tones of the keys, whichallows you to press keys without hearing key tones during a call.Note: To communicate with answering machines or computerized telephonesystems, the Send DTMF option must be selected.Searching for a Number in Address BookYou can search for a number in Address Book during a call.1. Press the Down key to highlight the Contact List option.2. Use the Navigation keys to select an entry. Enter the firstfew letters of the name to display entries listed startingwith the first entry matching your input. Press the keyto select the contact.3. Press Options soft key to access the following options:• Edit: allows you to edit the contact information.• Send Message: allows you to send the selected contact amessage.• Assign Speed Dial: allows you to assign a speed dial number tothe selected contact.• Copy to Phone: allows you to copy the contact to the phonememory.• Add to Reject List: allows you to add the selected contact to thereject list.4. Press the Select soft key to make your selection or theBack soft key to return to the contact information.For further details about the Address Book feature, see “Findingan Address Book Entry” on page 27.Call WaitingThe Call Waiting feature allows you to answer an incoming callwhile you have a call in progress, if this service is supported bythe network, and you have set the Call Waiting-Voice CallsMenu to Activate. You are notified of an incoming call by a callwaiting tone.To answer a call while you have a call in progress:1. Press the key or the Accept soft key to answer theincoming call. The first call is automatically put on hold.