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Because PPTP tunneling is based on the IP protocol, an IP connection between
your local PCs and the modem must exist before setting up a local tunnel.
Configuration of IP functions in the modem is described in the
MODEM SETTINGS
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Various platforms support PPTP. Subsequent examples are provided
for Windows 95, Windows 98, and Windows NT. Other operating
systems are not covered.
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Double-clicking a previously created connection icon is all that is required to
connect to your ISP or your corporate network.
By default, the modem is configured for eight PPP/ATM connections. However,
check with your ISP or corporate network administrator to ensure that these
connections are cross-connected in the wide area network to enable end-to-end
connections.
With PPP/PPTP, you indicate which remote destination you want to connect to.
This requires you to modify the VPN Server field in the Connect To window as
described next.
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If you leave the VPN Server field unchanged (with only the IP address of the
modem or its corresponding name visible), the modem automatically connects you
to one of the free ATM channels when you click Connect (see figure 26). This is
the simplest connection and works best if all the ATM channels are connected to
the same remote destination (see figure 27).
Figure 26. Connect To Window
section (click on that section's heading to return here.)
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CHANGING THE
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