| System Maintenance | 211Related information#unique_373#unique_374Using Multiple CTP20s for CollaborationIn a meeting room, you can use multiple CTP20s for whiteboard collaboration or presentation. Up to 4 CTP20s can beconnected to a VCS codec simultaneously.The collaboration methods are as below:• Status Synchronizing: The status of the VCS codec can be synchronized to all connected CTP20s.• Configuration Synchronizing: in idle state, you can configure the VCS codec via each CTP20, and the newconfiguration will cover the old configuration and take effect immediately.• Whiteboard Collaboration: you can use each CTP20 to initiate the whiteboard collaboration which can bereceived by other CTP20s simultaneously, but the editing and noting on each CTP20 are independent. If you closethe whiteboard of one CTP20 connected to a VCS codec, the whiteboards of other connected CTP20s are closedsimultaneously.• Presentation Collaboration: if you enable the feature of auto-presentation on devices, after you start presentingon the local computer/Apple devices, the presentation will be synchronized to all the CTP20s, but the editingand noting on each CTP20 are independent. If you do not enable the feature of auto-presentation on devices, youcan initiate the presentation on any CTP20 and the presentation will be synchronized to all the CTP20s, but theediting and noting on each CTP20 are independent. If you close the presentation on one CTP20 connected to aVCS codec, the presentation on other connected CTP20s are closed simultaneously.Note: If multiple CTP20s are wired to the VCS codec, you need a multi-port switch.Related informationControlling the Shared Content by CTP20Using the Whiteboard Feature of CTP20Using VCM34To further improve the sound quality, you can connect VCM34 to the VCS codec. If you need to expand thepickup range, you can connect to multiple VCM34s in cascade (up to 4 VCM34s). For more information, refer toYealink_VCM34_Quick_Start_Guide.System MaintenanceThe following topics describe system maintenance, such as how to set up a system profile, perform a factory restore,and upgrade the system firmware.• Exporting or Importing Configuration Files• Rebooting the System• Resetting the SD Card• Resetting the System• Exporting Log Files• Capturing Packets• System Firmware• Viewing Multipoint License Status• Viewing the Device Type
