Paradyne 6800 manual Loopback lo, Loopback Test Input Form, Test type or state Required field

COMSPHERE 6800 Series Network Management System

Loopback (lo)

(Disruptive to the Diagnostic Channel of COMSPHERE Devices)

Use the lo command to place a device into one of four loopback states, or to release a device from the specified loopback state. This command can be directed to all COMSPHERE and DATAPHONE II devices.

The four types of loopback states are analog/local, digital, DTE, and V54-Remote-Digital.

For most commands, NMS enables you to specify the destination for the command's results and schedule its execution. If the last page of the input form cannot accommodate the Destination for results and Schedule execution fields, an additional page is provided. For a complete description of these fields, refer to Chapter 1, Introduction.

Access Level:	Data Technician, Manager, System Administrator
Abbreviation:	lo
	Alternate: lpbk
Restrictions:	Remote DATAPHONE II DDD modems cannot be placed into the
	loopback state with this command. Use the Remote Digital Loopback (rdl)
	command to place a remote DATAPHONE II DDD modem in or out of the
	loopback state.
Routine:	Yes
Schedule:	Yes
Related Commands:	Remote Digital Loopback (rdl)

Loopback Test Input Form

This input form contains the following fields:

Device(s) (Required field)

Enter the device(s) to which this command will be sent. One or more devices may be specified. Standard addressing format applies to the input. For information on device addressing, refer to Appendix D of the COMSPHERE 6800 Series Network Management System User's/System Administrator's Guide.

Test type or state (Required field)

Enter the desired loopback state:

analog/local

This test loops back the analog signal from the transmitter to the receiver. The test duration for 3400/4400 Series modems is fixed at 30 seconds.

For the 3600 Series DSUs, the loopback permits the DTE to run a test to determine whether the DTE connection to the DSU is functioning properly. The DTE sends a test to the DSU which loops the test back to the DTE. For

3900 Series modems, analog/local loopback is not supported on tributary modems.

2-176 January 1997 6800-A2-GB31-20