Cisco 7931G Administration Guide

4-16
Cisco Unified IP Phone 7931G Administration Guide for Cisco Unified Communications Manager 8.0 (SCCP and SIP)
OL-20798-01
Chapter 4 Configuring Settings on the Cisco Unified IP Phone
Network Configuration Menu
Understanding DHCPv6 and Autoconfiguation
You can choose to configure the IP address and other network settings, such as the TFTP server, DNS
server, domain, name, etc. on an IP phone manually or by using a router and/or a DHCP server to
automatically assign the IP address and other network information. For more information on how the
Allow Auto Configuration for Phones and DHCPv6 settings determine where the IP Phone acquires its
IPv6 address and other network settings, see Table 4-5.
IPv6 TFTP Server 2
(for SCCP phones
only)
Optional backup IPv6 TFTP server that the phone
uses if the primary IPv6 TFTP server is
unavailable.
If you make changes to the Alternate TFTP or
IPv6 TFTP servers, you must first unlock the CTL
or ITL file on the phone.
When the phone looks for its TFTP server, it gives
precedence to manually assigned TFTP servers,
regardless of the protocol. If your configuration
includes both IPv6 and IPv4 TFTP servers, the
phone prioritizes the order that it looks for its
TFTP server by giving priority to manually
assigned IPv6 TFTP servers and IPv4 TFTP
servers. The phone looks for its TFTP server in the
following order:
1. Manually assigned IPv6 TFTP Servers
2. Manually assigned IPv4 TFTP Servers
3. DHCPv6 assigned TFTP Servers
4. DHCP assigned TFTP Servers
For information about CTL and ITL files, see the
Cisco Unified Communications Manager Security
Guide. For information about unlocking CTL and
ITL files, see to Security Configuration Menu,
page 4-35.
1. Unlock the CTL or ITL file, if necessary. If the
CTL and ITL files both exist, unlock
either file.
2. Unlock network configuration options.
3. Enter an IP address for the IPv6 TFTP
Server 1 option.
4. Scroll to the IPv6 TFTP Server 2 option, press
the Edit softkey, and then enter a new backup
TFTP server IP address.
5. Press the Validate softkey, and then press the
Save softkey.
Table 4-4 IPv6 Configuration Menu Options (continued)
Option Description To Change
Table 4-5 Determining Where a Phone Acquires Its Network Settings
DHCPv6
Auto IP
Configuration How the Phone Acquires its IP address and Network Settings
Disabled Disabled You must configure an IP address and the other network settings manually.
Note When DHCPv6 is disabled, the Auto IP Configuration setting is ignored.
Disabled Enabled You must configure an IP address and the other network settings manually.
Note When DHCPv6 is disabled, the Auto IP Configuration setting is ignored.
Enabled Disabled The DHCP server assigns the IP address and the other network settings to the phone.

Cisco 7931G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Wall mountable	Yes
Electromagnetic compatibility	FCC Part 15 (CFR 47) Class B, ICES-003 Class B, EN55022 Class B, CISPR22 Class B, AS/NZS CISPR 22 Class B, CISPR 24, VCCI Class B, EN55024, EN 50082-1, EN 61000-3-2, EN 61000-3-3, EN 61000-6-1
Wi-Fi	No
Networking standards	IEEE 802.1Q, IEEE 802.1af, IEEE 802.1p
Ethernet LAN interface type	Fast Ethernet
Supported network protocols	DHCP, TFTP, CDP
Lines quantity	24 lines
Phonebook capacity	- entries
Number of VoIP accounts	-
Voice codecs	G.711a, G.729A, G.729B, G.729ab
Volume control	Digital
Display resolution	192 x 64 pixels
Display number of lines	3 lines
Display number of colors	Monochrome
Storage temperature (T-T)	-10 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Safety	(UL) 60950, (CSA) C22.2 No. 60950, EN 60950, IEC 60950, AS/NZS60950, TS 001
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	229 mm
Width	203 mm
Height	178 mm
Weight	1360 g