Yealink VC400 User Manual

Also see for VC400: Getting started Recovery guide Administrator's guide Administrator's guide Administrator's guide

User Guide for the VC400 Video Conferencing System138Network diagnosis:1. Press (Menu soft key) to enter main menu.2. Press or to select the Diagnose menu.3. Press or to scroll to Ping, and then press .4. Enter IP address (for example, the IP address of the remote system)5. Press or to select Start, and then press .6. Press (Back soft key) to return to Diagnose menu.It measures the round-trip time from transmission to reception and reports errors andpacket loss. The results of the test include a statistical summary of the response packetsreceived, including the minimum, maximum, and the mean round-trip times.Trace Route:1. Press (Menu soft key) to enter main menu.2. Press or to select the Diagnose menu.3. Press or to scroll to Trace Route, and then press .4. Enter IP address (for example, the IP address of the remote system)5. Press or to select Start, and then press .6. Press (Back soft key) to return to Diagnose menu.If the test is successful, the VC400 system lists the hops between the system and the IPaddress you entered. You can check whether congestion happens via the time costbetween hops.General IssuesWhy can’t the system place a call? Check the network is available. When making a call using an account, check that the account is registered. Ensure the remote system supports the same call protocol as the local system. If you wantto place a call using another protocol, refer to Call Protocol on page 77.Why can’t the system receive calls? Check the network is available. When receiving a call using an account, check that the account is registered. Check that DND (Do Not Disturb) mode is deactivated on your system. Refer to Do NotDisturb (DND) on page 101.Why doesn’t the display device display the time and date correctly?Check whether you have configured the system to obtain the time and date from the SNTP