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NTU-2V, NTU-RG Optical Network Terminals  37 
Set the Enable UPnP flag to enable the function. 
Click the Apply/Save button to accept and save the settings. 
4.4 The Voice Menu. SIP Telephony Settings
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4.4.1  The SIP Basic Setting Submenu. SIP General Settings 
 
— SIP proxy – address of the SIP server which is used for users registration; 
 
— Use SIP Proxy – when the flag is set, the following SIP Proxy server is used: 
—  SIP Proxy – SIP Proxy address; 
—  SIP Proxy port – SIP Proxy port; 
— Use SIP Outbound Proxy – when the flag is set, SIP Outbound-proxy is used to send all queries; it is not 
used otherwise. 
—  SIP Outbound Proxy – address of the SIP proxy which will be used to transfer all queries 
(this server will be used for routing of SIP Proxy and SIP Registrar queries); 
—  SIP Outbound Proxy port – port of the SIP proxy which will be used to transfer all queries; 
— Use SIP Registrar – when the flag is set, the following SIP registration server is used: 
—  SIP Registrar – server address; 
—  SIP Registrar port – server port. 
The table shows SIP parameters that are common for both FXS ports. 
— SIP Account – SIP account (FXS port number); 
— Enable – when the flag is set, the port is enabled; 
— Number – phone number; 
— Display name – user name displayed; 
 
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 If the menu is not presented in configuration, the parameters have already been configured by you operator.