| Configuring Account Settings | 80Parameter Description Configuration MethodRPort Enable or disable the RPORTfeature on the device.When the VCS is behind a NATdevice, you can enable thisfeature for the port traversal withthe SIP server.Default: Disabled.The Rport feature need thesupport of the SIP server. Formore information, refer to RFC3581.Web user interfaceNote: If you want to use SIP Account to make private-to-public calls, you also need to enablethe static NAT settings or STUN feature for the SIP protocol.Related tasksConfiguring STUNRelated informationNATConfiguring SIP IP CallYou can use the SIP protocol for SIP IP call, which means dialing the IP address of the other party insteadof the account. If you do not want the third-party or Yealink old devices (for example, VC110/VC120/VC400/T49G or VC800/VC500/VC200 running firmware version 40 or earlier) to make IP calls to you, youcan enable the advanced security feature and set the IP call password. For VC880/VC800/VC500/VC200/PVT980/PVT950, you can also disable SIP IP call feature to prevent unknown public network attacks.About this taskThe SIP IP call feature on VP59 controls SIP IP call in and SIP IP call out.Procedure1. Do one of the following:• On your web user interface, go to Account > SIP IP Call.• On your VCS, go to More > Setting > Advanced > SIP IP Call Out.On your VP59, tap Setting > Advanced > SIP IP Call.• On your CTP20, tap Setting > Advanced > SIP IP Call Out.2. Configure and save the following settings:Parameter Description Configuration MethodSIP IP Incoming (is notapplicable to VP59)Enable or disable the SIP IPIncoming. If it is enabled, thesystem can receive an IP addresscall directly.Note: the default value is Off.Web user interface
