Solution
The quality of the image depends upon the bandwidth of the call. Raising the bit rate increases the quality of
your video, but requires extra network resources. Always use the bit rate best suited for your type of video.
A video call that is 720p and 15 frames per second requires a bit rate of 790 kbps or higher. A video call that
is 720p and 30 frames per second requires a bit rate of 1360 kbps or higher.
For additional information about bandwidth, see the Video Transmit Resolution Setup section of the "Phone
Features and Setup" chapter.
Solution
Confirm that the Maximum Session Bit Rate for Video Calls parameter is configured to be at least the minimum
video bit rate range. On the Cisco Unified Communications Manager, navigate to System > Region
Information > Region.
Cannot Transfer a Video Call
Problem
I can't transfer a video call from my desk phone to my mobile device.
Solution
Cisco Unified Mobility does not extend to video calls. A video call that is received at the desk phone cannot
be picked up on the mobile phone.
No Video During a Conference call
Problem
A video call goes to an audio call when I add two or more people to the call.
You must use a video conference bridge for ad hoc and meet-me video conferencing.
General Telephone Call Problems
The following sections help troubleshoot general telephone call problems.
Phone Call Cannot Be Established
Problem
A user complains about not being able to make a call.
Cause
The phone does not have a DHCP IP address, is unable to register to Cisco Unified Communications Manager.
Phones with an LCD display show the message Configuring IP or Registering. Phones without an
LCD display play the reorder tone (instead of dial tone) in the handset when the user attempts to make a call.
Cisco IP Phone 8800 Series Administration Guide for Cisco Unified Communications Manager
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General Telephone Call Problems
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