Paradyne 392xPLUS Loc Digital Loop, TMp tributary cannot perform a local digital loopback test

COMSPHERE 392xPlus Modems

Loc Digital Loop

Loc Digital Loop is issued by a local modem and forces it to loopback any data received from the remote modem (Figure 3-6 ). (This test operates the same as a CCITT V.54 Loop 2 except it is issued at your modem.) This is useful if a remote modem is incapable of initiating a remote digital loopback from its location. For this test to operate properly, the modems must be operating at the same rate and in Synchronous or Asynchronous Direct mode.

NOTE

A TMp tributary cannot perform a local digital loopback test.

Figure 3-6. Local Digital Loopback

To access Loc_Digital_Loop from the Test branch, make the following selections:

Test:

Loc_Digital_Loop

Press the

F1 F2 F3

key until Loc_Digital_Loop appears. Press any function key to start this test.

Pick Test Port	>
Port1	Port2

F1 F2 F3

If the mux is enabled, select the appropriate port by pressing the corresponding function key. Press

the key to scroll other ports into view.

3-60 November 1996 3920-A2-GN31-30