Basic Operation; Configuration Of Serial Ports; Terminals And Users; Printers - Digi PortServer II User Manual

Basic Operation

Configuration of serial ports

Each PortServer II serial port can be configured for a specific type of device and/or
service, for example, an asynchronous modem with PPP service. Once a port has been
configured, it cannot be used with another type of device or service unless you recon-
figure it. To maintain system security, configuration can only be carried out at the
root login level, and other users can only temporarily change the configuration of
the serial port to which they are attached.
Configuration information is held in Tables within the PortServer II memory. For
example, there is a table of all configured users, a table of connections, and so on.

Terminals and users

Each serial port that has a terminal connected to it must first be configured with the
emulation used by the terminal (for example, VT100), and the baud rate and control
parameters.
Once the serial port has been configured, you can set up one or more users for the ter-
minal. For each user, you should enter a login name and password. It is also possible
to customize the login information. For example, you might give each user a different
selection menu on successful login, or they may automatically connect to a particular
service or application.
PortServer II allows up to nine separate sessions on each of its serial ports. Short-cut
keys are provided to allow a user to temporarily escape from a session to access the
PortServer commands.

Printers

Each serial port that has a printer connected to it must be configured with data and
control information appropriate for the printer type. PortServer II is compatible with
most protocols that can be used to access printers.
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