Owner's manual

Physical description 961

Table 405

NTRB21 LED states (cont’d.)

LED

State

Definition

On (Yellow) A yellow alarm state has been detected.

YEL

Off No yellow alarm.

On (Green) NTRB21 is in loop-back mode.

LBK

Off NTRB21 is not in loop-back mode.

Figure 279 "NTRB21 TMDI card faceplate" (page 962) shows the faceplate

of the NTRB21 TMDI card.

Nortel Communication Server 1000

Circuit Card Reference

NN43001-311 02.06 Standard

27 August 2008