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login function. These settings will become effective immediately after clicking the Apply button.
Server: The IP address of the external NT Domain Server.
Transparent Login: This function refers to Windows NT Domain single sign-on. When Transparent Login is
enabled, clients will log into the system automatically after they have logged into the NT domain, which
means that clients only need to log in once.
Enable Local VPN: Check the checkbox to enable local VPN under transparent login mode. When
o
enabled, local VPN connection will be automatically created under transparent login mode. For the
local VPN to work under transparent login mode, however, it requires support from Windows Server
– need to install additional logon script on Windows Server.
6.1.7. Configuring SIP
SIP (Session Initiation Protocol) is a protocol for making real-time calls over IP network. Currently, most of the SIP
extensions address audio communication. Controller can act like a SIP Proxy Server that forwards end point'
requests and responses. In other words, SIP Proxy server needs to log in the trusted registrar to verify identities of 2
clients. After enabling SIP proxy server, all SIP traffic pass through NAT with a selective but fixed WAN interface.
In this example, client extension #301 is trying to call #303. Controller asks an external trusted SIP registrar to verify
both identities. After SIP registrar responds with a YES, call is established through WHG-707.
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