| Traditional Deployment Methods | 46Enabling Static NAT Feature for SIP Protocol(SIP Account and SIP IP Call)If you want to make private-to-public calls via SIP protocol (SIP account and SIP IP call), you need enablestatic NAT feature for SIP protocol.Procedure1. Do one of the following:• On your web user interface, go to Account > SIP Account/SIP IP Call > NAT Traversal.• On your VCS, go to More > Setting > Advanced > SIP IP Call Out > NAT Traversal.On your VP59, tap Setting > Advanced > SIP IP Call > NAT Traversal.• On your CTP20, tap Setting > Advanced > SIP IP Call Out > NAT Traversal.2. Configure and save the following settings:Parameter Description Configuration MethodNAT Traversal Select the static NAT. Web user interfaceEndpointCTP20Related tasksConfiguring NATRelated informationPort ForwardingConfiguring Route TraversalAbout this taskIn the Intranet, if there is a secondary router connected to the first router, the VCS connected to each routermay not be able to communicate properly. In this situation, you can configure static NAT and enforce theroute traversal feature for the VCS connected to the secondary router, so that the NAT works even thoughboth devices are in the Intranet.Attention:If you enable the route traversal feature forcibly for the VCS connected to the secondary router, theVCS may fail to call other VCS connected to the same router, because the NAT address replaces theprivate address.Procedure1. Do one of the following:• On your web user interface, go to Network > NAT/Firewall > NAT Configuration.• On your VCS:On your VC880/VC800/VC500/PVT980/PVT950, go to More > Setting > Advanced > NAT/Firewall> NAT.On your VC200, go to More > Network > Wired Network > NAT/Firewall > NAT.On your VP59, tap Setting > Advanced > NAT/Firewall > NAT.• On your CTP20, tap Setting > Advanced > NAT/Firewall > NAT.
