Cisco Unified IP Phone 8941 User Manual

Cisco Unified Communications Manager and TFTP Services Are Not Running 170
Configuration File Corruption 170
Cisco Unified Communications Manager Phone Registration 170
Cisco IP Phone Cannot Obtain IP Address 171
Phone Reset Problems 171
Phone Cannot Connect to LAN 171
Phone Resets Due to Intermittent Network Outages 171
Phone Resets Due to DHCP Setting Errors 172
Phone Resets Due to Incorrect Static IP Address 172
Phone Resets During Heavy Network Usage 172
Phone Resets Due to Intentional Reset 172
Phone Resets Due to DNS or Other Connectivity Issues 173
Phone Does Not Power Up 173
Cisco IP Phone Security Problems 173
CTL File Problems 173
Authentication Error, Phone Cannot Authenticate CTL File 173
Phone Cannot Authenticate CTL File 174
CTL File Authenticates but Other Configuration Files Do Not Authenticate 174
Phone Does Not Register 174
Signed Configuration Files Are Not Requested 174
802.1X Authentication Problems 175
802.1X Enabled on Phone but Phone Does Not Authenticate 176
802.1X Not Enabled 176
Factory Reset of Phone Has Deleted 802.1X Shared Secret 176
Audio and Video Problems 177
Phone Display Is Wavy 177
No Speech Path 177
Choppy Speech 177
Poor Audio Quality with Calls that Route Outside Cisco Unified Communications
Manager 178
Insufficient Bandwidth for Video Calls 178
Video Changes Resolution 178
General Telephone Call Problems 179
VPN-Connected Phone Does Not Log Calls 179
Phone Call Cannot Be Established 179
Cisco Unified IP Phone 8941 and 8945 Administration Guide for Cisco Unified Communications Manager 10.0 (SCCP
and SIP)
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Contents

Cisco Unified IP Phone 8941 Specifications

General

Brand	Cisco
Model	Unified IP Phone 8941
Category	IP Phone
Language	English