Cisco 7975G Administration Guide

9-15
Cisco Unified IP Phone 7975G Administration Guide for Cisco Unified Communications Manager 6.0
OL-12642-01
Chapter 9 Troubleshooting and Maintenance
General Troubleshooting Tips for the Cisco Unified IP Phone Expansion Module 7914 (SCCP Phones Only)
General Troubleshooting Tips for the Cisco Unified IP Phone
Expansion Module 7914 (SCCP Phones Only)
Table 9-3 provides general troubleshooting information for the Cisco Unified IP Phone Expansion
Module 7914. This information applies to SCCP phones only because SIP phones do not support this
device.
Table 9-3 Cisco Unified IP Phone Expansion Module 7914 Troubleshooting
Problem Solution
No display on the Cisco
Unified IP Phone
Expansion Module 7914.
Verify that all of the cable connections are correct.
Verify that you have power to the Cisco
Unified
IP Phone Expansion Module 7914.
Lighted buttons on the
first Cisco
Unified
IP Phone
Expansion Module 7914
are all red.
Verify that the Cisco Unified IP Phone Expansion
Module 7914 is defined in Cisco
Unified
Communications Manager.
Lighted buttons on the
second Cisco
Unified
IP Phone
Expansion Module 7914
are all amber.
Verify that the Cisco Unified IP Phone Expansion
Module 7914 is defined in Cisco
Unified
Communications Manager.
Resetting or Restoring the Cisco Unified IP Phone
There are two methods for resetting or restoring the Cisco Unified IP Phone:
• Performing a Basic Reset, page 9-16
• Performing a Factory Reset, page 9-16

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