Cisco 8821 User Manual

Cisco recommends the use of good quality external devices (such as headsets) that are shielded against
unwanted radio frequency (RF) and audio frequency (AF) signals.
Depending on the quality of these devices and their proximity to other devices such as mobile phones or
two-way radios, some audio noise may still occur. In these cases, Cisco recommends that you take one or
more of the following actions:
•
Move the external device away from the source of the RF or AF signals.
•
Route the external device cables away from the source of the RF or AF signals.
•
Use shielded cables for the external device, or use cables with a better shield and connector.
•
Shorten the length of the external device cable.
•
Apply ferrites or other such devices on the cables for the external device.
Cisco cannot guarantee the performance of the system because Cisco has no control over the quality of external
devices, cables, and connectors. The system will perform adequately when suitable devices are attached using
good quality cables and connectors.
In European Union countries, use only external headsets that are fully compliant with the EMC Directive
[89/336/EC].
Caution
Phone Behavior During Times of Network Congestion
Anything that degrades network performance can affect Cisco IP Phone voice and video quality, and in some
cases, can cause a call to drop. Sources of network degradation can include, but are not limited to, the following
activities:
•
Administrative tasks, such as an internal port scan or security scan
•
Attacks that occur on your network, such as a Denial of Service attack
SAR
This product's SAR value meets applicable USA, Canada, and
Korea SAR limits of 1.6 W/kg.
This product's SAR value meets other national SAR limits of 2.0
W/kg.
The specific values can be found in the product datasheet.
When carrying the product or using it while worn on your body,
either use an approved accessory such as a holster or otherwise
maintain a distance of 5 cm from the body to ensure compliance
with RF exposure requirements. Note that the product may be
transmitting even if you are not making a phone call.
Cisco Wireless IP Phone 8821 and 8821-EX User Guide
99
Product Safety and Security
Phone Behavior During Times of Network Congestion

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