Attaching
an External Modem
All ImageStream routers support connecting an external
modem to the 9-pin serial port. By default, the router is configured for use with
a null modem cable connected to a PC serial port or dumb terminal. Connecting
an external modem requires a minor changes to the default router configuration.
From the Main Menu, choose Option 1 (Configuration and Update Menu)
and then Option 3 (Service Configuration). Select Option 7 (sconsole). From the
sconsole menu, select Option 1 (Configure sconsole options). In the sconsole menu,
select Option 1 (Configure sconsole options). This will open the sconsole.conf
file in your default editor. The default configuration file looks like this:
getty /bin/mgetty
tty ttyS0
speed 9600
debug 0
Add
the line:
modem
to the file. You can also reconfigure the port
speed. By default, the speed is set to 9600 baud. If you are connecting a modem,
you may wish to set this to a higher value, such as 115200. Save the file, and
the router will restart the serial console with the new options. If you remove
the modem, you can remove the "modem" line from the configuration file. |