Cisco 8821 User Manual

WLAN Diagnostics Fields
The following table describes the fields in the WLAN Diagnostics screen.
DescriptionField
Name of the access point (AP) to which the phone is
associated
AP name
The access point radio MAC addressBSSID
The Service Set Identifier (SSID) that the phone usesSSID
The frequency that the phone usesFrequency
The channel that the phone usesCurrent channel
Last Received Signal Strength Indicator (RSSI) that
the phone received.
Last RSSI
Number of time units between beacons. A time unit
is 1.024 milliseconds.
Beacon interval
802.11 capabilitiesCapability
Data rates required by the AP at which the station
must be capable of operating.
Basic rates
Data rates supported by the AP that are optional for
the station to operate at.
Optional rates
802.11n data ratesSupported HT MCS
802.11ac receive data ratesSupported VHT (rx) rates
802.11ac transmit data ratesSupported VHT (tx) rates
Delivery Traffic Indication Map (DTIM) informationDTIM period
A two-digit country code. Country information might
not be displayed if the country information element
(IE) is not present in the beacon.
Country code
List of supported channels (from the country IE).Channels
802.11h power constraint offset in dBPower constraint
Dynamic Transmit Power Control (DTCP) value
advertised by the access point.
Power limit
Cisco Wireless IP Phone 8821 and 8821-EX User Guide
92
Troubleshooting
Perform WLAN Diagnostics

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