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Configuring a Personal Computer As a Terminal and for Access through a Telnet Listener
13-6 Configuring and Managing Telnet Servers
Setting User Priority for Devices Using Dynamic Access
You can enable interrupts if you want the owner or main user of the device to have full
control over it. For example, the main user of a personal computer may require priority
over other users that want to copy files from the computer disk. You can provide this
control by setting the port to INTERRUPTS ENABLED and the Break key to LOCAL.
Setting the BREAK to LOCAL allows the user to use the Break key to return from
session mode to local mode. Use caution when enabling interrupts, because they
inconvenience people using the device as a service. For printers with keyboards, which
can also be used as interactive terminals, you should have the interrupts characteristic
disabled on the port.
The INTERRUPTS characteristic is governed by the following rules:
•
With INTERRUPTS DISABLED, a potential user cannot interrupt an ongoing file
transfer session between the PC and another system. The user can start a session
only when all file transfer sessions have completed or are disconnected from the
privileged port. The factory-set default is INTERRUPTS DISABLED.
•
With INTERRUPTS ENABLED, a potential user can press the Break key to
interrupt an ongoing file transfer session and start a local session. The access
server logs out the file transfer session and allows the interactive user to log in. In
this situation, any queued connection requests for the port remain queued and are
processed when the user logs out of the port.
•
A request from another system can never interrupt an ongoing local session.
•
If there is no ongoing session, a session using either type of access (user at the PC
or system accessing the PC) can be started, and the above rules apply.
Example: Enabling Interrupts for Devices Using Dynamic Access
The following example shows how to enable interrupts and set BREAK to LOCAL on
port 5:
Local> CHANGE PORT 5 INTERRUPTS ENABLED BREAK LOCAL