Yealink VC400 Administrator's Manual

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

Configuring Network972. In the QoS block, enter the desired values in the corresponding fields.3. Click Confirm to accept the change.A dialog box pops up to prompt that the settings will take effect after a reboot.4. Click Confirm to reboot the system immediately.To configure QoS via the remote control:1. Select Menu->Advanced (default password: 0000) ->Advanced Network.2. In the Diffserv QoS block, enter the desired values in the corresponding fields.3. Press the Save soft key to accept the change.The display device prompts “Reboot now?”.4. Select OK to reboot the system immediately.VPNVPN (Virtual Private Network) is a secured private network connection built on top of publictelecommunication infrastructures, such as the Internet. VPN has become more prevalent due tothe benefits of scalability, reliability, convenience and security. VPN provides remote offices orindividual users with secure access to their organization's network. There are two types of VPNaccess: remote-access VPN (connecting an individual device to a network) and site-to-site VPN(connecting two networks together). Remote-access VPN allows employees to access theircompany's intranet from home or outside the office, and site-to-site VPN allows employees in