Nortel Networks Option 11C User Manual
NT5D14 Line Side T-1 card
Page 527 of 544
Power requirements
The line side T-1 card obtains its power from the Option 11C’s backplane.
Line side T-1 card: power required
Functional description
The NT5D14AA provides the following features and functions:
•
Card interfaces
•
T-1 interface circuit
•
Signaling and control
•
Card control functions
•
Microcontroller
•
Card LAN interface
•
Sanity Timer
•
Man-Machine Interface (MMI)
MAINT
On (Red)
The card detects whether tests are being run or that
alarms have been disabled through the Man-
Machine Interface. The LED will remain lit until these
conditions are no longer detected.
alarms have been disabled through the Man-
Machine Interface. The LED will remain lit until these
conditions are no longer detected.
Off
The line side T-1 card is fully operational
Table 163
Power requirements
Power requirements
Voltage
Current (max.)
5.0 V dc
150 mA.
+15.0 V dc
1.6 Amp
-15.0 V dc
1.3 Amp
Table 162
NT5D14AA Line Side T-1 Faceplate LEDs (Part 2 of 2)
NT5D14AA Line Side T-1 Faceplate LEDs (Part 2 of 2)
LED
State
Definition