Cisco 7925G Installing Guide

Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G
Installation
After setting up the wireless network to support voice communications and configuring the wireless IP phones
in Cisco Unified Communications Manager, you are ready to install the phones. The following sections contain
installation information.
Phone Power
The Cisco Unified Wireless IP Phone uses a battery for power. The following table lists the types of batteries
available for the wireless IP phone and the maximum talk and standby times.
Table 3: Batteries Available for the Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G
Standby timeTalk timeTechnologyType
Up to 180 hrsUp to 9.5 hrsLithium ion (Li-ion)Standard
Up to 240 hrsUp to 13 hrsLi-ionExtended
Use U-APSD for talk-time power save mode. Also 5 GHz talk time is reduced up to 30 minutes for a standard
battery and up to 2 hours for an extended battery. Use of 802.11b/g and a Bluetooth headset can reduce the
talk time by 40 to 50 percent. To extend talk-time battery life, the Cisco Unified Wireless IP Phone can use
PS-POLL power save methods. The Cisco Unified Wireless IP Phone uses either U-APSD or PS-POLL when
in idle (no active phone call).
When an AP supports the Cisco Compatible Extensions (CCX) proxy ARP information element, the idle
battery life is optimized. If the AP does not support CCX or proxy ARP is not enabled, then the idle battery
life is up to 50 percent less.
The following table shows the charging time for the two types of batteries. You can stop charging the battery
when the battery is fully charged. Lithium ion batteries can be partially charged without shortening the battery
life. Batteries should handle up to 4000 recharges.
Battery life varies because of environmental factors and Bluetooth use.Note
Table 4: Battery Charging Time
Phone connected to PC and USB cablePower supply connected to phoneBattery type
5 hours2 hoursStandard
7 hours3 hoursExtended
Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Administration Guide
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Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Setup
Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Installation

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