Digi PortServer II, Руководство пользователя

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Communications server configuration - dial-out access to the
Internet
Figure 6 PortServer II - Dial-Out Access to the Internet
In this configuration, several satellite or remote users are provided with access to an
ISP (Internet Service Provider) by a PortServer II and the PSTN (Public Service Tele-
phone Network) or Frame Relay (see Chapter 14). This permits the user full access to
all Internet options, including e-mail and World Wide Web (WWW) if they have the
appropriate software installed on their terminals. Features to note include:
• PortServer II is configured to provide a dial-out PPP link to the ISP.
• The link may be available at all times, only at certain times, or only on demand,
depending on traffic and billing considerations (see Chapter 8).
• PortServer II is connected to the local user’s terminals by Ethernet.
• It is not necessary for local users to log into the Internet service individually. Port-
Server II will log in for all configured users (see Chapter 9).
PortServer II
16
P o r t S e r v e r
P S T N o r
F r a m e R e l a y
E t h e r n e t
Internet Service Provider
User 2 (X-terminal)
U s e r 1 ( P C )