Cisco 7925G Deployment Guide

Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Deployment Guide
44
20
802.11a or 802.11g + Bluetooth Disabled
12 Mbps
27
802.11a or 802.11g + Bluetooth Disabled
24-54 Mbps
When using Coexistence (802.11b/g + Bluetooth), call capacity is reduced to the following:
Max # of Streams
802.11 Mode
Data Rate
4
802.11b/g + Bluetooth Enabled
11, <12-54> Mbps
7
802.11g + Bluetooth Enabled
12, <18-54> Mbps
Note: It is highly recommended to use 802.11a if using Bluetooth.
Dynamic Transmit Power Control (DTPC)
To ensure packets are exchanged successfully between the Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G and
the access point, Dynamic Transmit Power Control (DTPC) should be enabled.
DTPC prevents one-way audio when RF traffic is heard in one direction only.
If the access point does not support DTPC, then the Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G will use
the highest available transmit power depending on the current channel and data rate.
When using an access point that supports DTPC, set the client power to match the local access point power.
Do not use default setting of Max power for client power on Cisco Autonomous Access Points as that will not advertise DTPC
to the client.
The access point’s radio transmit power should not have a transmit power greater than what the Cisco Unified Wireless IP
Phone 7925G, 7925G-EX, and 7926G can support.
Rugged Environments
When deploying the Cisco Unified Wireless IP Phone 7925G, 7925G-EX, or 7926G in a rugged environment (e.g.
manufacturing, warehouse, retail), additional tuning on top of the standard design recommendations may be necessary.
Below are the key items to focus on when deploying a wireless LAN in a rugged environment.
Access Point and Antenna Selection

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