Nortel Networks Circuit Card 311 - Manual (Page 1060)

1060 NTRB21 DTI/PRI/DCH TMDI card
Figure 302
NTRB21 TMDI card with clock controller
In general, the first five LEDs operate as follows:
• During system power up, the LEDs are on.
• When the self-test is in progress, the LEDs flash on and off three times,
then go into their appropriate states, as shown in
Table 433 "NTRB21
LED states" (page 1059) .
Table 434
NTRB21 LED states
LED State Definition
On (Red) The NTRB21 circuit card is disabled. DIS
Off The NTRB21 is not disabled.
On (Green) The NTRB21 circuit card is in an active state. No alarm states
exist, the card is not disabled, and it is not in a loopback state. ACT
Off An alarm state or loopback state exists, or the card has been
disabled. See the other faceplate LEDs for more information.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
.