Cisco 7975G Software Guide

How the phone acquires its IP address and network
settings
Auto IP configurationDHCPv6
When the M-bit is set on the router, the O-bit is ignored.
The phone can set the IPv6 address based on an IPv6
address that it received from a DHCPv6 server or the
phone can acquire the IPv6 address through stateless
address autoconfiguration.
When the M-bit is not set, you should set the O-bit on
the router. The phone will then acquire the IPv6 address
through stateless address autoconfiguration. The phone
will not request an IPv6 address from the DHCPv6
server, but it will request other network configuration
information.
EnabledEnabled
Related Topics
Display Settings Menu, on page 62
Unlock and Lock Options, on page 63
Value Input Guidelines, on page 63
Phone Setup Options, on page 64
Device Configuration Menu, on page 85
Device Configuration Menu
The Device Configuration menu provides access to nine submenus from which you can view a variety of
settings that are specified in the configuration file for a phone. The phone downloads the configuration file
from the TFTP server. These submenus are:
For instructions about how to access the Device Configuration menu and its submenus, see Display Settings
Menu, on page 62.
Unified CM Configuration Menu
The Unified CM Configuration menu contains the options Unified CM1, Unified CM2, Unified CM3, Unified
CM4, and Unified CM5. These options show the Cisco Unified Communications Manager servers that are
available to process from the phone, in prioritized order. To change these options, use Cisco Unified
Communications Manager Administration, Cisco Unified CM Group Configuration.
For an available Cisco Unified Communications Manager server, an option on the Unified CM Configuration
menu will show the Cisco Unified Communications Manager server IP address or name and one of the states
shown in the following table.
Cisco Unified IP Phone 7975G, 7971G-GE, 7970G, 7965G, and 7945G Administration Guide for Cisco Unified
Communications Manager 9.0 (SCCP and SIP)
85
Cisco Unified IP Phone Settings
Device Configuration Menu

Cisco 7975G Specifications

General

Handset type	Wired handset
Product type	IP Phone
Product color	Grey, Silver
Speakerphone	Yes
Voice codecs	G.711Mu, G.711a, G.722, G.729A, iLBC
Number of melodies	24
Aspect ratio	4:3
Display diagonal	5.6 \
Display resolution	320 x 240 pixels
Lines quantity	8 lines
Phonebook capacity	- entries
Number of VoIP accounts	-
Front camera	No
Security algorithms	128-bit AES
Networking standards	IEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	DHCP, TFTP
Volume control	Digital
Headphone outputs	1
Ethernet LAN (RJ-45) ports	2
Number of handles included	1 pc(s)
AC adapter output voltage	48 V
Storage temperature (T-T)	-10 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Certification	FCC

Weight and Dimensions

Depth	152.4 mm
Width	266.7 mm
Height	203.2 mm
Weight	1600 g