Digital Equipment Digital NetRider, Owner'S Manual

Page: 182 / 536

Specifying SIGNAL CHECK
10-10 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.