Cisco 7925G Deployment Guide

Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Deployment Guide
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Non-overlapping channels must be used and allow at least 20 percent overlap with adjacent channels when deploying the Cisco
Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G in the 802.11b/g environment, which allows for seamless roaming.
Using an overlapping channel set such as 1, 5, 9, 13 is not a supported configuration.
Signal Strength and Coverage
To ensure acceptable voice quality, the Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G should always have a
signal of -67 dBm or higher when using 2.4 GHz or 5 GHz, while the Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and
7926G also meet the access point’s receiver sensitivity required signal level for the transmitted data rate.
Ensure the Packet Error Rate (PER) is no higher than 1%.
A minimum Signal to Noise Ratio (SNR) of 25 dB = -92 dBm noise level with -67 dBm signal should be maintained.
It is recommended to have at least two access points on non-overlapping channels with at least -67 dBm signal with the 25 dB
SNR to provide redundancy.
To achieve maximum capacity and throughput, the wireless LAN should be designed to 24 Mbps. Higher data rates (36-54
Mbps) can optionally be enabled for other applications other than voice only that can take advantage of these higher data rates.
Recommended to set the minimum data rate to 11 Mbps for 2.4 GHz and 12 Mbps for 5 GHz, which should also be the only
rate configured as a mandatory / basic rate.
In some environments, 6 Mbps may need to be enabled as a mandatory / basic rate.
Due to the above requirements, a single channel plan should not be deployed.

Cisco 7925G Specifications

General

Keypad number of keys	12
Display diagonal	2 \
Display resolution	176 x 220 pixels
Call waiting	Yes
Lines quantity	6 lines
Voice codecs	G.711a, G.722, G.729a, iLBC
Security algorithms	128-bit WEP, SSL/TLS, WPA
Supported network protocols	DHCP, TFTP, DNS, SCCP, SRST
Input voltage	100 - 240 V
Dimensions (WxDxH)	52 x 20 x 127 mm
Minimum system requirements	Cisco Unified Communications Manager 4.1, 4.2, 4.3, 5.1, 6.0, 6.1, 7.0 + Cisco Unified Communications Manager Express 4.3 +
Input frequency	50/60 Hz
Storage temperature (T-T)	-30 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Product type	IP Phone
Product color	Gray
Safety	UL 60950, CSA 22.2 No.60950, EN 60950, IEC 60950, AS/NZS 60950, IEC 60529 (IP 54)
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 EN 55024 EN 50082-1 EN 61000-6-1 EN 300386 EN 60601-1-2 KN
Compliance industry standards	IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.1X, IEEE 802.11e

Weight and Dimensions

Weight	138 g