Nortel Networks 311 User Manual
Physical description
173
Table 78
NT5D14AA Lineside T1 faceplate LEDs
NT5D14AA Lineside T1 faceplate LEDs
LED
State
Definition
On (Red)
The NT5D14AA card either failed its self-test or it hasn’t yet
been configured in software.
been configured in software.
STATUS
Off
The card is in an active state.
On (Red)
A red alarm has been detected from the T1 link. (This
includes, but is not limited to: not receiving a signal, the
signal has exceeded bit error thresholds or frame slip
thresholds.)
includes, but is not limited to: not receiving a signal, the
signal has exceeded bit error thresholds or frame slip
thresholds.)
RED
Off
No red alarm exists.
On (Yellow)
A yellow alarm state has been detected from the terminal
equipment side of the T1 link. If the terminal equipment
detects a red alarm condition, it may send a yellow alarm
signal to the Lineside T1 card (this depends on whether or
not your terminal equipment supports this feature).
equipment side of the T1 link. If the terminal equipment
detects a red alarm condition, it may send a yellow alarm
signal to the Lineside T1 card (this depends on whether or
not your terminal equipment supports this feature).
YEL
Off
No yellow alarm.
On (Red)
The card detects whether tests are being run or that alarms
are disabled through the Man-Machine Interface. The LED
remains lit until these conditions are no longer detected.
are disabled through the Man-Machine Interface. The LED
remains lit until these conditions are no longer detected.
MAINT
Off
The Lineside T1 card is fully operational.
The STATUS LED indicates that the Lineside T1 card has successfully
passed its self test, and is functional. When the card is installed, this LED
remains lit for two to five seconds as the self-test runs. If the self-test
completes successfully, the LED flashes three times and remains lit. When
the card is configured and enabled in software, the LED goes out. If the
LED flashes continuously, or remains weakly lit, replace the card.
passed its self test, and is functional. When the card is installed, this LED
remains lit for two to five seconds as the self-test runs. If the self-test
completes successfully, the LED flashes three times and remains lit. When
the card is configured and enabled in software, the LED goes out. If the
LED flashes continuously, or remains weakly lit, replace the card.
Note: The STATUS LED indicates the enabled/disabled status of both
card slots of the Lineside T1 card simultaneously. To properly enable
the card, both the motherboard and the daughterboard slots must be
enabled. The STATUS LED turns off as soon as either one of the
Lineside T1 card slots are enabled. No LED operation is observed when
the second card slot is enabled. To properly disable the card, both card
slots must be disabled. The LED does not turn on until both card slots
are disabled.
card slots of the Lineside T1 card simultaneously. To properly enable
the card, both the motherboard and the daughterboard slots must be
enabled. The STATUS LED turns off as soon as either one of the
Lineside T1 card slots are enabled. No LED operation is observed when
the second card slot is enabled. To properly disable the card, both card
slots must be disabled. The LED does not turn on until both card slots
are disabled.
The RED ALARM LED indicates that the Lineside T1 card has detected
an alarm condition from the T1 link. Alarm conditions can include such
conditions as not receiving a signal or the signal has exceeded bit error
thresholds or frame slip thresholds. See
an alarm condition from the T1 link. Alarm conditions can include such
conditions as not receiving a signal or the signal has exceeded bit error
thresholds or frame slip thresholds. See
for information on T1 link maintenance.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311
01.04
Standard
Release 5.0
23 May 2008
Copyright © 2003-2008, Nortel Networks
.