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Cisco 8821 User Manual

Cisco 8821
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Change the Screen Display Timeout
You can set up your phone to turn off the screen after a specific period of inactivity. When you turn off the
screen, the phone uses less battery power.
Procedure
Step 1
Access the Settings app.
Step 2
Select Phone settings > Display > Sleep.
Step 3
Select the time setting required.
Related Topics
Turn Off Your Phone, on page 5
Change the Wallpaper
You can change the wallpaper (background) for your phone. But, you must be careful that the wallpaper you
select. You should avoid wallpapers that will not clearly show white text.
The following wallpapers are not suitable for the phone:
Whale tail
Green leaves
Beach scene
Wheat field
Procedure
Step 1
Access the Settings app.
Step 2
Select Phone settings > Display > Wallpaper
Step 3
Select a wallpaper.
Step 4
Press Preview to view the wallpaper.
Step 5
Press Save.
Automatically Lock the Keypad
You can set the keypad to automatically lock. If you set the phone to automatically lock the keypad, the keypad
locks when the phone screen turns off.
Cisco Wireless IP Phone 8821 and 8821-EX User Guide
69
Settings
Access Phone Settings

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Cisco 8821 Specifications

General IconGeneral
Wi-FiYes
Ethernet LANNo
Wi-Fi standards802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Bluetooth version3.0+HS
Security algorithmsEAP-FAST, EAP-TLS, PEAP, WPA
Networking standardsIEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11d, IEEE 802.11e, IEEE 802.11g, IEEE 802.11n, IEEE 802.11r
USB 2.0 ports quantity1
Voice codecsG.711, G.711a, G.722, G.729, G.729ab, iLBC
Volume controlDigital
Product typeIP mobile phone
Product colorBlack
Input frequency50 - 60 Hz
AC adapter input voltage100 - 240 V
AC adapter output current0.2 A
Display diagonal2.4 \
Display resolution240 x 320 pixels
Frequency band2.412, 2.472, 5.180, 5.240, 5.260, 5.320, 5.500, 5.700, 5.745, 5.825 GHz
Lines quantity- lines
Phonebook capacity- entries
Storage temperature (T-T)-30 - 60 °C
Operating temperature (T-T)-10 - 50 °C
Operating relative humidity (H-H)10 - 95 %
SafetyUL 60950-1, CAN/CSA 60950-1, EN 60950-1, IEC 60950-1, AS/NZS 60950.1, IEC 60529 (IP 67)
Certification● 47 CFR 15 B ● ICES-003 B ● EN 55022 B ● AS/NZS CISPR 22 B ● CISPR 22 B ● VCCI B ● EN 61000-3-2 ● EN 61000-3-3 ● KN 22 B ● EN 55024 ● EN 50082-1 ● EN 61000-6-1 ● EN61000-6-3 ● EN 300386 ● EN 60601-1-2 ● KN
Number of handles included1 pc(s)
Harmonized System (HS) code85171800
Weight and Dimensions IconWeight and Dimensions
Depth17 mm
Width56 mm
Height132 mm
Weight126 g

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