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Functional description
Physical description
Table 148
NTAK79 LEDs (Part 1 of 2)
LED
OOS
ACT
553-3011-100
Standard 14.00
NTAK79 2.0 Mb PRI card
NTAK79 provides the following features and functions:
•
recovery of the 2.048 kbps data by the CEPT receiver, at signal levels
which have been attenuated by up 10 dB
•
control of CEPT line density using HDB3 which provides 64 kbps clear
channel
•
performance monitoring of the receive carrier by means of Bipolar
Violations (BPV), Slips, CRC-4 (CRC), and Frame Bit Errors (FBER)
•
monitoring of receive carrier alarms including AIS, LOS, and RAI
•
transmission of remote alarm when instructed
•
slip-buffering receive messages
•
supporting National and International bits in time slot 0
•
on-board clock controller
•
onboard D-channel interface
•
32 software-selectable Tx & Rx Pad values
•
conversion of PCM commanding Laws (A-A, u-u, A-u, u-A)
•
Card-LAN for maintenance communications
The NTAK79 uses a standard IPE-sized (9.5" by 12.5"), multilayer printed
circuit board. The faceplate is 7/8" wide and contains seven LEDs.
In general, the LEDs operate as shown in Table 148.
State
On (Red)
Off
On (Green)
January 2002
The NTAK79 2MB PRI circuit card is either disabled
or out-of-service.
The NTAK79 2MB PRI is not in a disabled state.
The NTAK79 2MB PRI circuit card is in an active
state.
Definition
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