D-Link DG-102S User Manual page 44

Configuration Using a Browser
Configuring the VoIP Gateway Using a Web Browser
The items on this window are described below:
Notify Entity: Enter the appropriate information for your call agent into
this field.
RGW Name: This is the residential gateway name your VoIP gateway
will be known as by the call agent. It usually consists of the IP address
or a normal name.
DNS IP: Enter the IP address for the closest DNS server in this field.
DNS State: When this item is enabled and the call agent is not
responding, the device will try to get the call agent's IP settings from the
DNS server defined above.
Click on the Save button at the bottom right of the screen to save the settings.
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Configure Call Agent IP Address window