Non-Switched Configuration Verification; Rackmount Du (Nt4X25Ad /Ch /Av /Df); Self-Test - Northern Telecom DMS-100 Series Installation And Maintenance Manual

0
0
0 9. Press the Alternate key.
0

Non-Switched Configuration Verification

0 In a non-switched configuration two DUs are connected directly to
0 each other without going through the DMS-100 Family switch.
0 To verify the operation of a DU in a non-switched
0 ensure that
0 standard DTE activity such as logging-on or transmitting data.
0

RACKMOUNT DU (NT4X25AD /CH /AV /DF)

0

Self-test

0 A DU self-test is performed automatically upon power-up,
0 be invoked manually by using the Self-test (Self Tst) push button
0 switch. If a call is in progress when a self-test is performed,
0 the call will be dropped.
0 To Perform a Manual Self-test on the DU:
0 1. Press the Self-test push button on the DU faceplate.
0 This causes the following to happen:
0 * All LEDs on the face of the DU
0 four seconds.
0 If any of the LEDs flash, a failure is indicated.
0 * All LEDs except for the Power LED turn off.
0 To Perform
0 /DF)
0 1. Unplug the DU from the shelf backplane, then plug the DU back
0 in to the backplane.
0 This causes the following to happen:
0 * All LEDs on the face of the DU turn on for
0 four seconds.
0 If any of the LEDs flash, a failure is indicated.
0 * All LEDs except for the Power LED turn off.
0
both DTEs and DUs are turned on, then perform any
A Power-up Self-test on the DU:
The Alternate LED turns off.
(NT4X25AD /CH /AV /DF)
light
297-2121-226
VINTAGE 05.01
configuration,
or can
for approximately
(NT4X25AD /CH /AV
approximately
5-9