Specifying SIGNAL CHECK

Specifying SIGNAL CHECK

Introduction

The SIGNAL CHECK characteristic allows the access server to check for any modem signal when a host requests a connection. If any one modem signal is present, the access server makes a connection; otherwise, a connection is denied. If all modem signals are dropped at the port once a connection is made, the access server disconnects the session and logs out the port. With SIGNAL CHECK disabled, the access server does not look for modem signals, and data might be lost. The factory-set default for SIGNAL CHECK is disabled.

Example: Enabling SIGNAL CHECK

The following example shows how to enable SIGNAL CHECK on port 7:

Local> CHANGE PORT 7 SIGNAL CHECK ENABLED

You should enable SIGNAL CHECK for ports with printers attached. If SIGNAL CHECK is disabled, data loss can occur when the device is turned off. However, you should not enable SIGNAL CHECK if you are using DSR or CTS flow control or if MODEM CONTROL or SIGNAL CONTROL is enabled.

You should enable SIGNAL CHECK along with either DSRLOGOUT or LONGBREAK LOGOUT and when the computer is turned off. This prevents users on the network from making a connection to the computer.

10-10 Configuring Modem Signals