Cisco 7925G Administration Guide

Usage notesPurposeNetwork protocol
DHCP is enabled by default. If disabled, you
must manually configure the IP address,
subnet mask, gateway, and an TFTP server
on each phone locally.
Use DHCP custom option 150. With this
method, you configure the TFTP server IP
address as the option value. For additional
supported DHCP configurations, see Cisco
Unified Communications Manager System
Guide.
Dynamically allocates and assigns an
IP address to network devices.
DHCP enables an IP phone to connect
to the network and become operational
without the administrator assigning an
IP address or configuring additional
network parameters.
Dynamic Host
Configuration
Protocol (DHCP)
To communicate using IP, network devices
must have an assigned IP address, subnet, and
gateway.
IP addresses, subnet, and gateway
identification are automatically assigned if
you are using the Cisco Unified IP Phone
with DHCP. If you are not using DHCP, you
must manually assign these properties to each
phone locally.
Messaging protocol that addresses and
sends packets across the network.
Internet Protocol (IP)
Cisco Unified Wireless IP Phones use the
RTCP protocol to allow monitoring of the
data delivery and minimal control and
identification functionality.
Used with the RTP protocol to provide
control over the transporting of
real-time data, such as interactive
voice and video, over data networks.
Real-Time Control
Protocol (RTCP)
Cisco Unified Wireless IP Phones use the
RTP protocol to send and receive real-time
voice traffic from other phones and gateways.
Standard for transporting real-time
data, such as interactive voice and
video, over data networks.
Real-time Protocol
(RTP)
Cisco Unified Wireless IP Phones use SCCP
protocol for VoIP call signaling and enhanced
features such as Message Waiting Indication
(MWI).
Uses Cisco-proprietary messages to
communicate between IP devices and
Cisco Unified Communications
Manager, Release 4.3 or later.
Skinny Call Control
Protocol (SCCP)
Cisco Unified Wireless IP Phones use TCP
to connect to Cisco Unified Communications
Manager and to access XML services.
Connection-oriented transport
protocol.
Transmission Control
Protocol (TCP)
You must have a TFTP server in your
network that the DHCP server automatically
identifies. If more than one TFTP server is
running in your network, you must manually
assign a TFTP server to each phone.
Method for transferring files over the
network.
On the Cisco Unified
Wireless IP Phone, TFTP enables you
to obtain a configuration file specific
to the phone type.
Trivial File Transport
Protocol (TFTP)
Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Administration Guide
33
VoIP Wireless Network
Network Protocols

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