Cisco 7925G Installing Guide

1
Powering on the phone. The Cisco Unified Wireless IP Phone has nonvolatile flash memory in which it
stores firmware images and user-defined preferences. At startup, the phone runs a bootstrap loader that
loads a phone image stored in Flash memory. Using this image, the phone initializes its software and
hardware.
For more information, see Phone Power, on page 8 and Startup and Connectivity Problems.
2
Scanning for an access point. The Cisco Unified Wireless IP Phone scans the RF coverage area with its
radio. The phone searches its network profiles and scans for access points that have a matching SSID and
authentication type. The phone associates with the access point with the highest RSSI that matches with
its network profile.
For more information, see Cisco Unified Wireless AP Interactions and Startup and Connectivity Problems.
3
Authenticating with access point. The Cisco Unified Wireless IP Phone begins the authenticating process.
•
If set for Open, then any device can authenticate to the access point. For added security, static WEP
encryption might optionally be used.
•
If set to Shared Key, the phone encrypts the challenge text using the WEP key and the access point
must verify that the WEP key was used to encrypt the challenge text before network access is available.
•
If set for LEAP, EAP-FAST, or PEAP, the username and password are authenticated by the RADIUS
server before network access is available.
•
If set for EAP-TLS, the phone requires one or more of the following certificates:
◦
a client certificate and the RADIUS root certificate
◦
the CA certificate
•
If set for Auto (AKM), the phone looks for an access point with one of the following key management
options enabled:
WPA, WPA2, or CCKM
The username and password are authenticated by the RADIUS server before network access
is available.
WPA-Pre-shared key, WPA2-Pre-shared key
The phone authenticates with the access point using the pre-shared key.
For more information, see Authentication Methods.
4
Configuring IP network. If the wireless IP phone is using DHCP to obtain an IP address, the phone queries
the DHCP server to obtain one. If you are not using DHCP in your network, you must assign a static IP
address to each phone locally.
In addition to assigning an IP address, the DHCP server directs the wireless IP phone to a TFTP server.
If the phone has a statically defined IP address, you must configure the TFTP server IP address locally on
the phone; the phone then contacts the TFTP server directly.
For more information, see:
•
DHCP Settings
•
Disable DHCP
•
Startup and Connectivity Problems
Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Administration Guide
19
Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Setup
Phone Startup Process

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