NT5D14Line Side T-1 card Page527 of 544
Option11C and 11C Mini TechnicalReference Guide
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.
Off The line side T-1 card is fully operational
Table 1 63
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 1 62
NT5D14AA Line Side T-1 Faceplate LEDs (Part2 of 2)
LED State Definition