H-13160-A2-GB21-50 January 1997
Async Terminal Operation
Overview H-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Before Using the Async Terminal H-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initiating an Async Terminal Session H-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ending an Async Terminal Session H-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Menu Organization H-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using Async Terminal Screens H-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Customer Identification H-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying LED Conditions H-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing Configuration Options H-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying or Editing Configuration Options H-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Saving Edit Changes H-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Establishing Access Security on a Port H-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting a Password H-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Entering a Password to Gain Access H-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuration Worksheets for the Async Terminal Interface H-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview
You can configure and manage the DSU/CSU from an
asynchronous (async) terminal that is configured for
9.6 kbps, 8 characters, no parity, and 1 stop bit.
This appendix provides operational examples to help
you become familiar with the use of the async terminal for
DSU/CSU control.
By convention throughout this appendix, examples of
screens are shown as they appear with the standalone
4-port DSU/CSU.
Before Using the Async
Terminal
You can connect the async terminal directly to the
COM port of the DSU/CSU, or you can establish a remote
connection using dial-in (via the integral modem) or
Telnet access.
Before using the async terminal, you may use the
DSU/CSU’s front panel to set certain configuration
options for async terminal operation. Use the
Configuration (Cnfig) branch of the front panel menu and
edit the User Interface (User) configuration options for
async terminal operation. Refer to the Changing
Configuration Options section in Chapter 3, Operation,
and Appendix C, Configuration Options.
To connect the async terminal to the DSU/CSU using
Telnet access, refer to the Configuring the DSU/CSU for
SNMP or Telnet Access section in Chapter 3, Operation.
If the DSU/CSU is misconfigured, leaving it in a state
that does not support async terminal operation, the
recovery procedure consists of power cycling the
DSU/CSU, waiting for the completion of the power-up
self-test, and then pressing the async terminal’s Return
key five times in succession. (Begin pressing the Return
key within two seconds after the completion of power-up
self-test, and do not wait longer than one second between
each successive key press.) This procedure allows you to
use the System Paused screen to reset the COM port
configuration options or to reload all factory default
configuration options.
H