ISI4608-PCI User Guide
LINUX -- Dial-in configuration:
To configure a particular port for dial-in, utilities like 'mgetty' need to be installed on the system. If, for example, the port /dev/ttyM2c needs to be configured for a remote-access dial-in connection, an entry of the
form 'M2c:12345:respawn:/sbin/mgetty ttyM2c' needs to be added in the /etc/inittab file. After you have made the change, execute 'init q' so that the 'init' process re-reads the inittab file and spawns the mgetty process to wait for an incoming connection. Users can then dial in, use their user names and passwords to log in, and access their accounts on the machine.
To disable dial-in access on a particular port, change the entry in the / etc/inittab file to 'M2c:12345:off:/sbin/mgetty ttyM2c'or just comment-out that entry by prefixing a '#' to the entry on the line.
LINUX -- PPP setup:
The 'PPP-HOWTO' (a document that is available as a part of the 'HOWTO' documentation on most of the distributions under /usr/doc/ HOWTO) explains in detail the procedure for configuring a Linux machine as a PPP server. This information is also available at
http://www.interweft.com.au/other/ppp-howto/ppp-howto.html.
The documentation in the PPP-HOWTO is directly applicable to ISI ports.
Note: A base I/O address of 0, e.g., ISIBaseX=oxo, or omission of these parameters for any card X, disables that particular card.
Miscellaneous:
Device files corresponding to ports on the ISI460x-PCI cards are created in the /dev folder. Use ttyMxy for normal ports and cumxy for corresponding callout ports. The letter x is the card number (1–4), and y is the port number, (a–p) for 16-port cards.
Normal ports (ttyM) are configured for dial-in connections. Callout ports (cum) are used for dial-out connections.
