Schmid Watson Przewodnik Instalacji Strona 45

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LTU/NTU SZ-DOC-W5-1.pd
f
Operating Manual
V
ersion: 1.5
Revision: 2002-09-10 36
During Firmware Download, the Status LEDs are used as follows:
Download Status Local LED Remote LED
Local download Flash erase blinking red off
Local download ready blinking amber off
Local download in progress blinking green off
Remote download ready (LTU) blinking amber blinking amber
Remote download in progress (LTU) blinking green blinking green
Remote download Flash erase (NTU) blinking red off
Remote download ready (NTU) blinking amber off
Remote download in progress (NTU) blinking green off
Table 5-3: LED indication during firmware download
5.1.2 Alarm Conditions
5.1.2.1 Local LED
An alarm condition is displayed with the Local LED if one of the following conditions occurs:
Urgent alarm (red):
Hardware or software failure (blinking)
Loss of signal / frame alignment on the DSL side (LOSW)
DSL block-error-rate according G.826 30% (BER-H)
LTU only: overcurrent detected in remote power feeding circuit (CLD)
Non-urgent alarm (amber):
DSL block-error-rate according G.826 > 15% (BER-L)
Either Loop 1, Loop 2, Analog Loopback, or the Regenerator Loopback is active (LOOP1,
LOOP2, ALB, LOOPREG, BERT)
Alarm cut off is activated (ACO)
E1 Interface:
Loss of signal or frame alignment on the E1 side (LOS-S, LFA-S)
Loss of external clock (EXT-LOC, in external clock mode only)
Receiving AIS on E1 side (AIS-S)
Excessive block error rate on E1 side (BER-S)
PRA Interface:
Loss of signal at the T reference point (LOS-S)
Loss of frame at the T reference point (LFA-S)
Receiving AIS at the T reference point (AIS-S)
Loss of frame at the V3 reference point (LFA-V3)
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