D-Link 2Voice + 4SW VoIP Router DVG-1402S Manual page 14

Secondary DNS
Address
Upstream Bandwidth
Input the primary DNS (Domain Name Server) IP address
provided by your ISP
This is an optional DNS Address entry to be used if the primary
DNS Fails.
The upstream bandwidth can be set for the type of packets that
the will be sent. The bandwidth can be maximized for voice
packets and limited for data that requires less throughput.
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