User guide

Software/Driver Installation (Linux)
MultiModemISI Hybrid Server Cards, ISIHP & ISIHI Series 69
- /dev/ttyM1a to /dev/ttyM1d for ISDN ports. (These four
ports correspond to the total of four B-channels available on the two
BRI lines that can be connected to these cards.)
- /dev/ttyM1e to /dev/ttyM1h for modem ports. (These four
ports accommodate the total of four 56K modems that can operate on
the four B-channels available on the two BRI lines that can be
connected to these cards.)
For the 4-BRI hybrid cards (16 ports; ISIHP-4S/4U/4SD):
- /dev/ttyM1a to /dev/ttyM1h for ISDN ports. (These eight
ports correspond to the total of eight B-channels available on the four
BRI lines that can be connected to these cards.)
- /dev/ttyM1i to /dev/ttyM1p for modem ports. (For
the ISIHP-4S/4U, these eight ports accommodate the total of eight56K
modems that can operate on the eight B-channels available on the
four BRI lines that can be connected to these cards. Note, however,
that this device mapping for ttyM1i through ttyM1p does not apply to
the ISIHP-4SD. This is because the ISIHP-4SD works with ISDN
ports, or terminal adapter ports, only. The ISIHP-4SD contains no
modems in its circuitry.)
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.