Yealink VC110 Administrator's Manual

Also see for VC110: Getting started Recovery guide Quick start guide User guide User guide

Contents

Administrator‘s Guide for Yealink VC110 Video Conferencing Endpoint94To configure static NAT via the remote control:1. Select Menu->Advanced (default password: 0000) ->NAT/Firewall.2. Select the desired value from the pull-down list of Type.3. Configure the NAT public address in the Public IP Address field if Manual Settings isselected from the pull-down list of Type.4. Press the Save soft key to accept the change.To configure static NAT for SIP IP call via the remote control:1. Select Menu->Advanced (default password: 0000) ->SIP IP Call.2. Select StaticNat from the pull-down list of NAT_Traversal.3. Press the Save soft key to accept the change.STUN is a network protocol, used in NAT traversal for applications of real-time voice,video, messaging, and other interactive IP communications. The STUN protocol allowsentities behind a NAT to first discover the presence of a NAT and the type of NAT (formore information on the NAT types, refer to NAT Types on page 97.) and to obtain themapped (public) IP address and port number that the NAT has allocated for the UDPconnections to remote parties. The protocol requires assistance from a third-partynetwork server (STUN server) usually located on public Internet. The IP phone can beconfigured to work as a STUN client, to send exploratory STUN messages to the STUNserver. The STUN server uses those messages to determine the public IP address andport used, and then informs the client. For more information, refer to RFC3489.Capturing packets after you enable the STUN feature, you can find that the VC110 videoconferencing endpoint sends Binding Request to the STUN server, and then mapped IPaddress and port is placed in the Binding Response: Binding Success ResponseMAPPED-ADDRESS: 59.61.92.59:19232.