Tenda W308R User Manual page 22

inquire your local ISP.

DNS server: Enter the necessary DNS server provided by your ISP.

Alternate DNS server: Enter the second DNS address if your ISP provides,
which is optional.
Dynamic IP (Via DHCP)
If your connection mode is Dynamic IP, it means every time you access the Internet,
you will get a different IP. You don't need to enter any parameters in this mode, just
Click "Ok" to finish the settings.
PPTP

Mode: Show your current connection mode.

PPTP server address: The IP address or domain name of the destination server
and it is used to specify the destination address which needs for PPTP
11N Wireless Broadband Router User Guide
17