Specifications

11-9
Configuring Modem Signals
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.