Yealink VC400 - Page 100

User Guide for the VC400 Video Conferencing System
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If the system fails to call, you can troubleshoot the problems according to the following
prompts:
Prompts
Description
Call Failed Busy Here
 Remote system rejects your SIP call.
 Remote system does not answer your SIP call.
 Remote system has reached maximum sessions when
you place a SIP call.
Call Failed Remote
endpoint refused call
 Remote system rejects your H.323 call
 Remote system does not answer your H.323 call.
 Remote system has reached maximum sessions when
you place an H.323 call.
Network disconnected
Local network is disconnected.
Call Failed Request Time
Out
 Remote system network anomaly
 Remote system is powered off.
Maximum number of
sessions reached
Local system has reached maximum sessions.
During a video call, the call duration and video of remote system are displayed on the display
device.