Cisco 8821 User Manual

Headset Tips
If your headset has a control button, you can use the headset to listen (headphone mode) and the phone
microphone to pick up your voice. Just press the control button when you plug the phone headset in. If you
use this mode, the phone microphone automatically filters the background noise.
Related Topics
Adjust the Background Noise Filter, on page 67
Cisco Wireless IP Phone 8821 and 8821-EX Desktop Charger
You can use the Cisco Wireless IP Phone 8821 and 8821-EX Desktop Charger to charge your phone and
spare phone battery. The charger works on AC power or from a charged spare phone battery. It can be secured
with a standard laptop cable lock.
Figure 3: Cisco Wireless IP Phone 8821 and Cisco Wireless IP Phone 8821 and 8821-EX Desktop Charger
If your phone has a protective case, you don't need to remove the case before you charge the phone in the
desktop charger. You adapt the charger to fit the phone.
You can use a USB to Ethernet adapter (dongle) to connect the desktop charger to the Ethernet for only
automatic Wi-Fi profile provisioning and certificate enrollment purposes. You cannot use the dongle to make
voice calls over the Ethernet. For more information on the USB port, see the Cisco Wireless IP Phone 8821
and 8821-EX Administration Guide.
Do not use chargers or handsfree mode in a Potentially Explosive Atmosphere.
Do not charge the phone if it is wet.
Caution
Cisco Wireless IP Phone 8821 and 8821-EX User Guide
79
Accessories
Headset Tips

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