Bay Networks 5390, Administering, Page: 58 / 888

A1-10 893-741-B
Introduction to the Model 5390 Server
Connecting Modems
The Model 5390 server provides many options for configuring modem behavior. A modem can be
set up to make outbound calls only, to make inbound calls only, or to be bidirectional. Using rtelnet,
an outbound modem can be accessed by tip, cu, and uucp.
Inbound modems can be configured with a range of restrictions—from having full access to the
network through the CLI, to having restricted access to a dedicated host. The behavior of
bidirectional modems is defined by whether the call comes from outside the local network through
the modem or is initiated by an application or user on the LAN.
Modems attached to the Model 5390 server can be grouped into a modem pool, which is easier to
manage than when modems are attached to several different computers. Also, the Model 5390
security system adds a level of protection beyond that provided by individual hosts.
Connecting Printers
Using rtelnet, the Model 5390 server supports printers that require dynamic font downloading and
bidirectional communication. The aprint utility supports only unidirectional serial printers.