D-Link DVG-5121SP User Manual page 28

Basic Network Settings
required by your ISP. The default MAC address is set to the WAN's physical interface MAC
address on the VoIP telephone adapter. You can use the "Clone MAC Address" button to copy the
MAC address of the Ethernet Card installed by your ISP and replace the WAN MAC address with
the MAC address of the router.
Ping from WAN: While enable, it allows end user ping from WAN through internal to check the device working or
not.
MTU: Maximum Transmission Unit - you may need to change the MTU for optimal performance with your specific
ISP. 1492 is the default MTU.
IP Address: Enter the IP address (Static L2TP only).
Subnet Mask: Enter the Primary and Secondary DNS Server Addresses (Static L2TP only).
VoIP telephone adapter: Enter the VoIP telephone adapter IP Address provided by your ISP.
Server IP/Name: Enter the Server IP provided by your ISP (optional).
L2TP Account: Enter your L2TP account name.
L2TP Password: Enter your L2TP password and then retype the password in the next box.
Connect Type: Select either Keep Alive or Manual on.
Max Idle Time: Enter a maximum idle time during which the Internet connection is maintained during inactivity. To
disable this feature, enable Auto-reconnect.
Set DNS server: The DNS server information will be supplied by your ISP (Internet Service Provider.)
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DVG-5121SP User's Manual
D-Link Corporation