Yealink VC800 Administrator's Manual

Also see for MeetingSpace VC500: Administrator's guide Administrator's guide Administrator's guide Administrator's guide Quick configuration guide

Administrator’s Guide for Yealink VC800&VC500 Video Conferencing System48Parameter Description Configuration MethodNAT TraversalConfigures the NAT traversal type.You can configure it for the SIPaccount or SIP IP call separately. Disabled STUN StaticNatDefault: DisabledNote: Static NAT works only if thisparameter is set to StaticNat.Web User InterfaceTo configure route traversal via web user interface:1. Click on Network->NAT/Firewall.2. Select Manual from the pull-down list of Static NAT.3. Enter the NAT address in the NAT Public IP Address field.4. Select Compulsory from the pull-down list of Route Traversal.5. Click Confirm to accept the change.6. Enable static NAT for SIP account or SIP IP call. For more information, refer to Static NATon page 44.STUNYou can use the Simple Traversal of UDP through NAT (STUN) function besides ALG or staticNAT. If STUN is enabled, the system can perform private-to-public network traversal using theSTUN server.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 allows the systembehind a NAT to first discover the presence of a NAT and the type of NAT, and then allows thesystem to obtain the mapped (public) IP address and port number that the NAT has allocatedfor the UDP connections to remote parties. The protocol requires assistance from a third-partynetwork server (STUN server) usually located on public Internet. The IP phone can be configured