Cisco 7940G Administration Guide

Contents
6
Cisco Unified IP Phone 7960G/7940G Administration Guide for Cisco Unified Communications Manager 7.0 (SIP)
OL-15499-01
Verifying DNS Settings 7-4
Verifying Cisco Unified Communications Manager Settings 7-4
Cisco Unified Communications Manager and TFTP Services Are Not Running 7-4
Creating a New Configuration File 7-5
Symptom: Cisco Unified IP Phone Unable to Obtain IP Address 7-6
Cisco Unified IP Phone Resets Unexpectedly 7-6
Verifying Physical Connection 7-6
Identifying Intermittent Network Outages 7-7
Verifying DHCP Settings 7-7
Checking Static IP Address Settings 7-7
Verifying Voice VLAN Configuration 7-7
Verifying that the Phones Have Not Been Intentionally Reset 7-7
Eliminating DNS or Other Connectivity Errors 7-8
Troubleshooting Cisco Unified IP Phone Security 7-9
General Troubleshooting Tips for the Cisco Unified IP Phone 7-9
Resetting or Restoring the Cisco Unified IP Phone 7-12
Performing a Basic Reset 7-12
Performing a Factory Reset 7-12
Where to Go for More Troubleshooting Information 7-13
Cleaning the Cisco Unified IP Phone 7-13
APPENDIX A Providing Information to Users Via a Website A-1
How Users Obtain Support for the Cisco Unified IP Phone A-1
Giving Users Access to the User Options Web Pages A-1
How Users Get Copies of Cisco Unified IP Phone Manuals A-2
Accessing Cisco 7900 Series Unified IP Phone eLearning Tutorials A-2
How Users Subscribe to Services and Configure Phone Features A-2
How Users Access a Voice Messaging System A-3
How Users Configure Personal Directory Entries A-3
Installing and Configuring the Cisco Unified IP Phone Address Book Synchronizer A-4
APPENDIX B Feature Support by Protocol for Cisco Unified IP Phone B-1
APPENDIX C Supporting International Users C-1
Adding Language Overlays to Phone Buttons C-1
Installing the Cisco Unified Communications Manager Locale Installer C-1

Cisco 7940G Specifications

General

Keypad number of keys	12
Touchscreen	-
Speakerphone	Yes
Voice codecs	G.711, G.729a
Bluetooth	No
Supported network protocols	DHCP, SCCP, SIP, MGCP
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
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 FCC 68 (CFR47) HAC IC CS-03
Compliance industry standards	IEEE 802.3, IEEE 802.3u, IEEE 802.1Q
Lines quantity	- lines
Phonebook capacity	- entries
Number of handles included	1 pc(s)

Weight and Dimensions

Weight	1600 g