Cisco Unified IP Phone Security Problems
Authentication Error, Phone Cannot Authenticate CTL File
Phone Cannot Authenticate CTL File
CTL File Authenticates but Other Configuration Files Do Not Authenticate
ITL File Authenticates but Other Configuration Files Do Not Authenticate
Signed Configuration Files Are Not Requested
802.1X Authentication Problems
802.1X Is Enabled on Phone but Phone Does Not Authenticate
Factory Reset of Phone Has Deleted 802.1X Shared Secret
Camera, audio, and video problems
Audio/video is not synchronized
Video is slow moving or jittery
Poor Audio Quality with Calls That Route Outside Cisco Unified Communications
Video distorted or pixilated on Cisco Unified IP Phone 9951
Phone Does Not Set Up VXC VPN Tunnel
Identify VXC VPN Connection Problems
General telephone call problems
Phone call cannot be established
Phone does not recognize DTMF digits or digits are delayed
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager
10.0 (SIP)
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Contents
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