User Guide for Yealink VC110 Video Conferencing Endpoint88If the endpoint fails to call, you can troubleshoot the problems according to the followingprompts:Prompts DescriptionCall Failed Busy Here Remote endpoint rejects your SIP call. Remote endpoint does not answer your SIP call. Remote endpoint has reached maximum sessions whenyou place a SIP call.Call Failed Remoteendpoint refused call Remote endpoint rejects your H.323 call Remote endpoint does not answer your H.323 call. Remote endpoint has reached maximum sessions whenyou place an H.323 call.Network disconnected Local network is disconnected.Call Failed Request TimeOut Remote endpoint network anomaly Remote endpoint is powered off.Maximum number ofsessions reached Local endpoint has reached maximum sessions.During a video call, the call duration and video of remote endpoint are displayed on the displaydevice.