Cisco 7975G Administration Guide

CHAPTER
9-1
Cisco Unified IP Phone 7975G Administration Guide for Cisco Unified Communications Manager 6.0
OL-12642-01
9
Troubleshooting and Maintenance
This chapter provides information that can assist you in troubleshooting problems with your Cisco
Unified IP Phone 7975G or with your IP telephony network. It also explains how to clean and maintain
your phone.
For additional troubleshooting information, refer to the Using the 79xx Status Information For
Troubleshooting tech note. That document is available to registered Cisco.com users at this URL:
http://www.cisco.com/warp/customer/788/AVVID/telecaster_trouble.html
If you need additional assistance to resolve an issue, see the “Obtaining Documentation, Obtaining
Support, and Security Guidelines” section on page xiii.
This chapter includes these topics:
• Resolving Startup Problems, page 9-1
• Cisco Unified IP Phone Resets Unexpectedly, page 9-6
• Troubleshooting Cisco Unified IP Phone Security, page 9-8
• General Troubleshooting Tips, page 9-11
• General Troubleshooting Tips for the Cisco Unified IP Phone Expansion Module 7914 (SCCP
Phones Only), page 9-15
• Resetting or Restoring the Cisco Unified IP Phone, page 9-15
• Using the Quality Report Tool, page 9-17
• Monitoring the Voice Quality of Calls, page 9-17
• Where to Go for More Troubleshooting Information, page 9-20
• Cleaning the Cisco Unified IP Phone, page 9-20
Resolving Startup Problems
After installing a Cisco Unified IP Phone into your network and adding it to
Cisco
Unified Communications Manager, the phone should start up as described in the “Verifying the
Phone Startup Process” section on page 3-12. If the phone does not start up properly, see the following
sections for troubleshooting information:
• Symptom: The Cisco Unified IP Phone Does Not Go Through its Normal Startup Process, page 9-2
• Symptom: The Cisco Unified IP Phone Does Not Register with Cisco Unified Communications
Manager, page 9-2

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