Administrator‘s Guide for Yealink VC110 Video Conferencing Endpoint1062. 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 endpoint 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 endpoint immediately.VPN (Virtual Private Network) is a secured private network connection built on top ofpublic telecommunication infrastructures, such as the Internet. VPN has become moreprevalent due to the benefits of scalability, reliability, convenience and security. VPNprovides remote offices or individual users with secure access to their organization'snetwork. There are two types of VPN access: remote-access VPN (connecting anindividual device to a network) and site-to-site VPN (connecting two networks together).Remote-access VPN allows employees to access their company's intranet from home oroutside the office, and site-to-site VPN allows employees in geographically separatedoffices to share one cohesive virtual network. VPN can also be classified by theprotocols used to tunnel the traffic. It provides security through tunneling protocols:IPSec, SSL, L2TP and PPTP.