Enable/Disable Do Not Disturb 
Enable/Disable anonymous call. 
Enable/Disable anonymous call rejection. 
Enable/Disable refresh session function. The device will send an 
invite packet to refresh the session during a call if this option is 
enabled. 
The refresh session time interval. 
This method includes SIP and TEL. 
Enable/Disable allow events. 
Enable/Disable registered to NAT 
The phone periodically sends a UDP packet to keep the port active 
and to prevent the server from shutting down the port 
Default interval is 30 seconds. 
Enable/Disable SIP encryption. 
Enable/Disable RTP encryption. 
The encryption algorithm, at this time we only have RC4.