HP NetRider manual Setting User Priority for Devices Using Dynamic Access

Configuring a Personal Computer As a Terminal and for Access through a Telnet Listener

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

13-6 Configuring and Managing Telnet Servers