13.Mute - This deactivates the handset, headset or speakerphone microphone. It allows you to talk without being heard by the distant party. To use this feature, press MUTE. The display will show "MUTE". To deactivate the feature, press MUTE again.
14.Speaker - This button activates and deactivates the speaker phone.
15.Delete - This button is used in various programming actions to delete items. It is discussed in detail when it is used.
16.Dial/OK - This button is used in programming to accept a value and to dial out a displayed number.
17.Menu - This is discussed in detail in the next section.
18.Directory - This is discussed in Item 21.
19.Voice Mail - This dials the number for a voice mail service. Programming instructions are given in the following section.
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