Cisco 8821 User Manual

Procedure
Step 1
Access the Settings app.
Step 2
Select Phone settings > Display > Brightness
Step 3
Use the arrow keys of the Navigation cluster to adjust the brightness.
Step 4
Press Save.
Change the Font Size
You can adjust the font size used on the phone screen. If you set the font size smaller, more text displays on
the screen. If you set the font size larger, less text displays on the screen.
Procedure
Step 1
Access the Settings app.
Step 2
Select Phone settings > Display > Font size
Step 3
Select the setting required.
Control the LED Indicator Light
Your phone has an LED indicator light at the top. When the light is enabled, it indicates the status of the
phone:
• Solid red—the phone is connected to the AC power source and battery is charging.
• Solid green—the phone is connected to the AC power source and battery is fully charged.
• Fast blinking amber—There is an incoming call. Phone can be charging or fully charged.
• Fast blinking green—There is a voice message. When phone is connected to the AC power source, the
green light displays longer than when using only the battery.
•
Slow blinking green (every 2 seconds): The phone is using the battery. The phone is registered with the
wireless network and is within service coverage area.
If you don't want this indication, you can turn the light off.
Procedure
Step 1
Access the Settings app.
Step 2
Select Phone settings > LED coverage indicator
Step 3
Press Off to turn off the indicator or press On to turn on the indicator.
Cisco Wireless IP Phone 8821 and 8821-EX User Guide
68
Settings
Access Phone Settings

Cisco 8821 Specifications

General

Wi-Fi	Yes
Ethernet LAN	No
Wi-Fi standards	802.11a, Wi-Fi 5 (802.11ac), 802.11b, 802.11g, Wi-Fi 4 (802.11n)
Bluetooth version	3.0+HS
Security algorithms	EAP-FAST, EAP-TLS, PEAP, WPA
Networking standards	IEEE 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 quantity	1
Voice codecs	G.711, G.711a, G.722, G.729, G.729ab, iLBC
Volume control	Digital
Product type	IP mobile phone
Product color	Black
Input frequency	50 - 60 Hz
AC adapter input voltage	100 - 240 V
AC adapter output current	0.2 A
Display diagonal	2.4 \
Display resolution	240 x 320 pixels
Frequency band	2.412, 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 %
Safety	UL 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 included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	17 mm
Width	56 mm
Height	132 mm
Weight	126 g