Cisco 7925G Deployment Guide

Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Deployment Guide
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Below are the commands to change the QBSS max threshold for each platform type.
Cisco Unified Wireless LAN Controller = config advanced 802.11b 7920VSIEConfig call-admission-limit <value>
Cisco Autonomous Access Point = dot11 phone cac-thresh <value>
CCKM Timestamp Tolerance
As of the 7.0.98.218 release, the CCKM timestamp tolerance is configurable.
In previous releases, the CCKM timestamp tolerance was set to 1000 ms and non-configurable.
The default CCKM timestamp tolerance is still set to 1000 ms in the later releases.
It is recommended to adjust the CCKM timestamp tolerance to 5000 ms to optimize the Cisco Unified Wireless IP Phone
7925G, 7925G-EX, and 7926G roaming experience.
(Cisco Controller) >config wlan security wpa akm cckm timestamp-tolerance ?
<tolerance> Allow CCKM IE time-stamp tolerance <1000 to 5000> milliseconds; Default tolerance 1000 msecs
Use the following command to configure the CCKM timestamp tolerance per Cisco recommendations.
(Cisco Controller) >config wlan security wpa akm cckm timestamp-tolerance 5000 <WLAN id >
To confirm the change, enter show wlan <WLAN id>, where the following will be displayed.
CCKM tsf Tolerance............................... 5000
Auto-Immune
The Auto-Immune feature can optionally be enabled for protection against denial of service (DoS) attacks.
Although when this feature is enabled there can be interruptions introduced with voice over wireless LAN, therefore it is
recommended to disable the Auto-Immune feature on the Cisco Unified Wireless LAN Controller.
The Auto-Immune feature was introduced in the 4.2.176.0 release, which was enabled by default and non-configurable.
As of the 4.2.207.0, 5.2.193.0 and 6.0.182.0 releases this feature is disabled by default but can be enabled optionally.
To view the Auto-Immune configuration on the Cisco Unified Wireless LAN Controller, telnet or SSH to the controller and
enter the following command.
(Cisco Controller) >show wps summary
Auto-Immune
Auto-Immune.................................... Disabled
Client Exclusion Policy

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