DVG-5121SP User’s Manual
D-Link Corporation
23
4-1-5. L2TP
L2TP (Layer Two Tunneling Protocol) is an extension of the Point-to-Point Tunneling Protocol (PPTP) used by
an Internet service provider (ISP) to enable the operation of a virtual private network (VPN) over the Internet.
WAN Port IP Assignment:
Select L2TP.
Basic Network Setting > WAN > L2TP
Host Name:
The Host Name is optional but may be required by some ISPs. The default host name is the device
name of the telephone adapter and may be changed.
WAN Port MAC:
The default MAC Address is set to the WAN’s physical interface MAC address on the VoIP
telephone adapter. It is not recommended that you change the default MAC address unless
required by your ISP. Select Manual Setting to manually change the WAN Port MAC address.