Cisco 7941G Troubleshooting And Maintenance

Troubleshooting and Maintenance
• Troubleshooting and Maintenance Overview, on page 1
• Troubleshooting, on page 1
• Maintenance, on page 22
Troubleshooting and Maintenance Overview
This chapter provides information that can assist you in troubleshooting problems with your Cisco Unified
IP Phone or with your IP telephony network. It also explains how to clean and maintain your phone.
For additional troubleshooting information, see 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/en/US/products/hw/phones/ps379/products_tech_note09186a00800945bd.shtml
Troubleshooting
This section contains the following topics.
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 Phone Startup Process Verification. If the phone does
not start up properly, see the following sections for troubleshooting information.
Cisco Unified IP Phone Does Not Go Through Normal Startup Process
Problem
When you connect a Cisco Unified IP Phone into the network port, the phone should go through its normal
startup process and the LCD screen should display information.
Cause
If the phone does not go through the startup process, the cause may be faulty cables, bad connections, network
outages, lack of power, or the phone may not be functional.
Troubleshooting and Maintenance
1

Cisco 7941G Specifications

General

Keypad number of keys	12
Touchscreen	-
Display resolution	320 x 222 pixels
Speakerphone	Yes
Voice codecs	G.729a
Bluetooth	No
Supported network protocols	DHCP, TFTP, SCCP, DSCP
Ethernet LAN (RJ-45) ports	2
Input voltage	48 V
Dimensions (WxDxH)	266.7 x 152.4 x 203.2 mm
Storage temperature (T-T)	-10 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Handset type	Wired handset
Product type	IP Phone
Product color	Gray
Safety	(UL) 60950, (CSA) C22.2 No. 60950, IEC 60950, EN 60950, AS/NZS 60950
Certification	CE (FCC) 15 (CFR 47) B ICES-003 B EN55022 B CISPR22 B AS/NZ 3548 B VCCI B EN55024 EN 50082-1 EN 61000-3-2 EN 61000-3-3
Compliance industry standards	IEEE 802.3, IEEE 802.3u, IEEE 802.1Q, IEEE 802.3af
Lines quantity	- lines
Phonebook capacity	- entries
Number of handles included	1 pc(s)

Weight and Dimensions

Weight	1600 g