Call Functions 31• Browser: Opens the browser.• Mute keys: Silence key tones.• Send DTMF: Sends DTMF (Dual Tone Multi-Frequency)tones to the contacts you have selected. These DTMF tonesare sent as a group. The DTMF tones are the tones used inphones for tone dialing, sounding when you press the numberkeys. This option is helpful for entering a password or anaccount number when you call an automated system, like abanking service.• Calendar: Allows you to access your Calendar.• Memo: Allows you to access your Memos.• End Call: Ends the current call.Using the Speakerphone During an Active CallWhile in an active call, you can enable/disable the speakerphonefeature. During an active call, press (Spkr on) to toggle thespeakerphone on, (Spkr off) to toggle the speakerphoneoff.Muting or Sending Keypad TonesThese options allow you to turn the key tones off or on. If the Mutekeys option is selected, it allows you to press keys without hearingkey tones during a call.Note: To communicate with answering machines or computerizedtelephone systems, the Send keys option must be selected.