Yealink VC400 Administrator's Manual

Also see for VC120: Getting started Recovery guide Quick guide Administrator's guide User guide

Administrator’s Guide for Yealink Video Conferencing Systems226- If the 8 way MCU displays Eternal, it means you have imported a permanent versionof the 8-way conference license. So the VC400/VC120 supports up to 8-way videocalls and an additional voice call (an original caller and eight other sites) permanently.NoteVCS Integrated with Control SystemsThe Yealink video conferencing systems provide an API interface for the third-party controlsystem. The interface allows you to control the Yealink video conferencing system through thetouch panels installed in the control device.When you successfully deploy environment and configure the third-party control system, theYealink video conferencing systems and the control devices, you can remotely manage certainfeatures of your video conferencing system via the control device.Please visithttp://support.yealink.com/documentFront/forwardToDocumentDetailPage?documentId=1 toread related documents.Upgrading the system or performing a factory reset will not affect the imported 8-way license.If the system has been imported a trial version of the 8-way license and the license has notexpired, and you import a permanent version to the system, the permanent version will overwritethe trial version.If the system has been imported a permanent version of the 8-way license, and you import a trialversion to the system, the permanent version will not be overwritten.