Cisco 8821 User Manual

c) Press the center of each side of the cover until it clicks in place.
d) Check that the cover is flush with the phone.
Phone Battery Charging
You can charge the battery using any of the following options:
• USB cable—You can charge the phone with an AC power adapter or your computer.
• Desktop charger—You can use the phone and charge it at the same time.
• Multicharger—You can charge several phones at the same time.
Explosion Hazard: Do not charge the phone battery in a potentially explosive atmosphere. Statement 431Warning
The battery takes about 3 hours to charge in the AC power adapter, desktop charger, or multicharger. It takes
about 6 hours to charge using the USB cable and your computer.
Related Topics
Cisco Wireless IP Phone 8821 and 8821-EX Multi Charger, on page 82
Cisco Wireless IP Phone 8821 and 8821-EX Desktop Charger, on page 79
Spare Battery Charging
If you require longer talk times, you will find it useful to have a spare, charged battery. You can charge a
spare battery in the desktop charger or multicharger.
Explosion Hazard: Do not charge the spare battery in a potentially explosive atmosphere. Statement 431Warning
The spare battery takes about 3 hours to charge in the desktop charger or multicharger.
Related Topics
Cisco Wireless IP Phone 8821 and 8821-EX Multi Charger, on page 82
Cisco Wireless IP Phone 8821 and 8821-EX Desktop Charger, on page 79
Prepare the Power Adapter
The power adapter for your phone is compact. Before you use the power adapter, you have to unfold the
prongs. After you use the adapter, you can fold in the prongs.
The power adapter for your region may also require an additional clip to allow the adapter to be plugged into
the electrical outlet.
Cisco Wireless IP Phone 8821 and 8821-EX User Guide
24
Phone Setup
Phone Battery Charging

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