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—Transfer of current call to third party.
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—Dials most recently dialed party.
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—Access local (your phone) and global (your organization) features.
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—Receive text and voice messages.
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—Cancels ringing and directs incoming calls to your Voice Mail (if supported).
4.Microphone Mute 
—Mutes audio transmission locally during calls.
5.Headset 
—Allows you to place and receive calls through an optionally connected headset.
6.Hands-freeMicrophone—Place your phone on a hard, flat surface for best results.
7. Speakerphone 
—Allows for hands-free communication during calls.
8.Volume Keys 
—Use these to adjust the volume of the handset, headset, speaker, and ringer.
9.Dial Pad—These 12 keys provide the 10 digits, the 26 alphabetic characters, and special characters available in context-sensitive applications.
10.Soft Keys—The screen will display labels for these keys, to identify their context-sensitive functions.
11.Hold 
—Holds an active call or resumes a held call.
12.Speaker—For ringer and hands-free audio output.
13.Hookswitch
14.Line/Speed Dial Key—Use these keys to activate up to four lines or speed dials that can be assigned to your phone.
