Cisco 7925G Administration Guide

Bluetooth Technology
The Cisco Unified Wireless IP Phones are full-feature telephones and a qualified Bluetooth wireless devices
(Qualified Device ID [QDID] B014396) and provide voice communication over the same wireless LAN that
your computer uses. In addition to basic call-handling features, your phone operates with Bluetooth wireless
headsets, including certain hands-free call features.
Bluetooth devices operate in the unlicensed Industrial Scientific Medicine (ISM) band of 2.4 GHz, which is
the same as the 802.11b/g band. This unlicensed band in most countries includes the frequency range from
2400 to 2483.5 MHz. Bluetooth enables low bandwidth wireless connections within a range of 10 meters.
The best performance is in the 1 to 2 meter range. Synchronous voice channels are provided by using circuit
switching and asynchronous data channels are provided by using packet switching.
Bluetooth uses integrated Adaptive Frequency Hopping (AFH) to avoid interference. Every 625 microseconds
(1/1,000,000 of a second) the channel changes or hops to another frequency within the 2402 to 2480 MHz
range. This equals 1600 hops every second.
The phones contain a Bluetooth module and 802.11 WLAN module. This coexistence greatly reduces and
avoids radio interference between the Bluetooth and 802.11b/g radio.
Bluetooth devices fit into to three different power classes, as shown in the following table.
Table 1: Bluetooth Maximum Permitted Transmit Power and Range by Class
RangeMaximum permitted transmit power (mW, dBm)Class
Up to 100 meters100 mW, 20 dBmClass 1
Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Administration Guide
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Cisco Unified Wireless IP Phone
Bluetooth Technology

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