Cisco 9971 Administration Guide

802.11 Data Rates, Transmit Power, Ranges, and Decibel Tolerances
The following table lists the transmit (Tx) power capacities, data rates, ranges in feet and meters, and decibels
that the receiver tolerates for the 801.11 standards.
Table 9: Tx Power, Data Rates, Ranges, and Decibels by Standard
Receiver SensitivityRangeData Rate (See
Note 2)
Maximum Tx Power
(See Note 1)
Standard
802.11a
-91 dBm604 ft (184 m)6 Mbps16 dBm
-90 dBm604 ft (184 m)9 Mbps
-88 dBm551 ft (168 m)12 Mbps
-86 dBm545 ft (166 m)18 Mbps
-82 dBm512 ft (156 m)24 Mbps
-80 dBm420 ft (128 m)36 Mbps
-77 dBm322 ft (98 m)48 Mbps
-75 dBm289 ft (88 m)54 Mbps
802.11g
-91 dBm709 ft (216 m)6 Mbps16 dBm
-90 dBm650 ft (198 m)9 Mbps
-87 dBm623 ft (190 m)12 Mbps
-86 dBm623 ft (190 m)18 Mbps
-82 dBm623 ft (190 m)24 Mbps
-80 dBm495 ft (151 m)36 Mbps
-77 dBm413 ft (126 m)48 Mbps
-76 dBm394 ft (120 m)54 Mbps
802.11b
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 10.0
53
802.11 Standards for WLAN Communications

Cisco 9971 Specifications

General

Resolution	640 x 480 pixels
Programmable Line Keys	5
Protocols	SIP, SCCP
Wi-Fi	802.11a/b/g
Weight	3.5 lbs
Display	5-inch color LCD
Audio	Wideband audio, G.722 codec support
USB Ports	2 x USB 2.0
Ethernet Ports	2
PoE	Yes (802.3af)
Video	H.264
Network Interfaces	10/100/1000 Ethernet
Codecs	G.711, G.722, G.729a, G.729ab, iLBC
Power Options	PoE
Headset Port	Dedicated headset port
Speakerphone	Full-duplex speakerphone