Cisco 8821 Guide

Cisco Wireless IP Phone 8821 and 8821-EX Wireless LAN Deployment Guide
3
Contents
Cisco Wireless IP Phone 8821 and 8821-EX Overview ......................................................................................................................... 6!
Phone Models ......................................................................................................................................................................................... 6!
Requirements .......................................................................................................................................................................................... 6!
Site Survey .......................................................................................................................................................................................... 7!
Call Control ........................................................................................................................................................................................ 8!
Wireless LAN ..................................................................................................................................................................................... 8!
Protocols ............................................................................................................................................................................................... 12!
Wi-Fi ..................................................................................................................................................................................................... 12!
Regulatory ........................................................................................................................................................................................ 15!
Bluetooth ............................................................................................................................................................................................... 16!
Languages ............................................................................................................................................................................................. 17!
8821-EX Certifications ......................................................................................................................................................................... 17!
Battery Life ........................................................................................................................................................................................... 18!
Phone Care ........................................................................................................................................................................................... 20!
Accessories ........................................................................................................................................................................................... 20!
Wireless LAN Design .............................................................................................................................................................................. 22!
802.11 Network ..................................................................................................................................................................................... 22!
5 GHz (802.11a/n/ac) ....................................................................................................................................................................... 22!
2.4 GHz (802.11b/g/n) ...................................................................................................................................................................... 23!
Signal Strength and Coverage .......................................................................................................................................................... 24!
Data Rates ......................................................................................................................................................................................... 27!
Rugged Environments ...................................................................................................................................................................... 28!
Security ................................................................................................................................................................................................. 30!
Extensible Authentication Protocol - Flexible Authentication via Secure Tunneling (EAP-FAST) ............................................... 31!
Extensible Authentication Protocol - Transport Layer Security (EAP-TLS) ................................................................................... 32!
Protected Extensible Authentication Protocol (PEAP) .................................................................................................................... 34!
EAP and User Database Compatibility ............................................................................................................................................ 34!
Quality of Service (QoS) ....................................................................................................................................................................... 35!
Call Admission Control (CAC) ........................................................................................................................................................ 35!
Traffic Classification (TCLAS) ........................................................................................................................................................ 36!
QoS Basic Service Set (QBSS) ........................................................................................................................................................ 36!
Wired QoS ........................................................................................................................................................................................ 37!
Roaming ................................................................................................................................................................................................ 38!
Fast Secure Roaming (FSR) ............................................................................................................................................................. 38!
Interband Roaming ........................................................................................................................................................................... 40!
Scanning ........................................................................................................................................................................................... 40!
Power Management .............................................................................................................................................................................. 40!
Call Capacity ........................................................................................................................................................................................ 41!
Multicast ............................................................................................................................................................................................... 42!
Configuring the Cisco Wireless LAN .................................................................................................................................................... 42!
Cisco Wireless LAN Controller and Lightweight Access Points .......................................................................................................... 42!
802.11 Network Settings .................................................................................................................................................................. 43!
WLAN Settings ................................................................................................................................................................................ 55!
Controller Settings ............................................................................................................................................................................ 60!
Call Admission Control (CAC) ........................................................................................................................................................ 62!

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