Cisco 7821 Administration Manual page 39

9 Speakerphone button
10 Headset button
11 Mute button
12 Keypad
13
Volume button
14 Contacts button
15 Applications button
16 Messages button
17 Handset
Cisco IP Phone 7821, 7841, and 7861 Administration Guide for Cisco Unified Communications Manager 10.0 (SIP)
Toggles the speakerphone on or off. When the speakerphone is on, the
button is lit.
Toggles the headset on or off. When the headset is on, the button is lit.
Toggles the microphone on or off. When the microphone is muted, the
button is lit.
Allows you to dial phone numbers, enter letters, and select menu items
(by entering the item number).
Controls the handset, headset, and speakerphone volume (off hook) and
the ringer volume (on hook).
Opens or closes the Directories menu. Use the Contacts button to access
personal and corporate directories.
Opens or closes the Applications menu. Use the Applications button to
access call history, user preferences, phone settings, and phone model
information.
Autodials your voice messaging system (varies by system).
Phone handset.
Cisco IP Phone 7841
25