SMC Networks SMC2804WBR V.2 - Manual (Page 52)

Configuring the Wireless Barricade™ g Router
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Point-to-Point Tunneling Protocol (PPTP)
Point-to-Point Tunneling Protocol (PPTP) can be used to join
different physical networks using the Internet as an intermediary.
Using the above screen allows client PCs to establish a normal
PPTP session and provides hassle-free configuration of the
PPTP client on each client PC.
Enter the PPTP Account, Password, Host Name, and then
Service IP Address (usually supplied by your ISP), the
assigned IP address, and subnet mask.
Leave the Maximum Transmission Unit (MTU) at the default
value (1460) unless you have a particular reason to change it.
Enter a maximum Idle Time Out (in minutes) to define a
maximum period of time for which the PPTP connection is
maintained during inactivity. If the connection is inactive for
longer than the Maximum Idle Time, it will be dropped.
(Default: 0 minutes.)
Note: Please be aware that the setting of [Maximum Idle Time]
to "0" and/or [Auto-Reconnect] enabled can cause an
increase of your telephone bill if you don't have signed
a flatrate.