Local Loopback Test; Procedure: Performing A Local Loopback Test - Avaya 6424D+M User Manual

Chapter 3: Using the Front Panel
Page 3-14
If the self-test fails, and a non-volatile memory error is detected
during the start-up sequence, the HSL displays the following:
MEMORY ERROR
DEFAULT OPTIONS
LOADED
REL 1.0, VER 1.0
The HSL automatically displays the HOME screen when the
start-up sequence completes.

Local Loopback Test

The local loopback test can be initiated by the front panel
interface, the V.35 Local Loopback (LL) interface lead, or a
command from the switch. Data terminal equipment is required
for this test.
The HSL, while in the local loopback test mode, accepts
synchronous data on its V.35 input data lead and retransmits the
data synchronously on its V.35 output data lead.
The following procedure contains step-by-step instructions for
initiating a local loopback test from the front panel interface.
Refer to Local Loopback Test section in Chapter 6, ''Test
Descriptions'' for details of this test.

Procedure: Performing a Local Loopback Test

Press NEXT/NO or BACK until the HSL displays LOCAL
1
LOOPBACK?
Press ENTER/YES to begin local loopback test.
2
If the HSL is idle or a Permanent Call is active, the HSL
displays
TEST STARTED
END LOCAL LOOP?
Otherwise, the call is disconnected and the HSL displays
DISCONNECTED
TEST STARTED
END LOCAL LOOP?
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