Private IP  Enter a private IP address here. 
Protocol Type  Select a protocol type from the drop-down list. 
External Start Port  Enter an available external start port. 
External End Port  Enter an available external end port. 
Internal Start Port  Enter an available internal start port. 
Internal End Port  Enter an available internal end port. 
Connection  Select a connection from the drop-down list. 
 
When you are making changes, click on Apply to save your changes 
and Cancel to exit without saving. 
 
 
QoS Setup 
 
On the same IP network simultaneously transmit data, voice and video 
services, it is necessary to consider the Quality of Service (QoS); 
because high-definition video, to delay demanding real-time voice 
service with the Web page access and file transfer business 
requirements are quite different. 
 
 
 
 
QoS Setup 
 
 
 
 
The following table describes the labels in this screen. 
 
LABEL  DESCRIPTION 
VOIP(SIP)