Physical Description; Functional Description - Nortel NT5K02 Description

4 Description

Physical description

Functional description

NT5K02 and NT8D03 Analog Line Cards 553-3001-161
Analog line cards are housed in:
— NT8D37 Intelligent Peripheral Equipment (IPE) Modules:
up to 16 cards
— NT8D11 Common/Peripheral Equipment (CE/PE) Modules:
up to 10 cards
The analog line card circuitry is mounted on a 31.75 by 25.40 cm (12.5 by
10 in.) printed circuit board.
The analog line card connects to the backplane through a 160-pin edge
connector. The backplane is cabled to the input/output (I/O) panel, which
connects to the main distribution frame (MDF), also called a cross-connect
terminal, through 25-pair cables. Telephones then connect to the card at the
MDF.
The faceplate of the analog line card is equipped with a red light emitting
diode (LED) which lights when the card is disabled. When the card is
installed, the LED remains lit for two to five seconds as a self-test runs. If
the self-test completes successfully, the LED flashes three times and
remains lit until the card is configured and enabled in software, then the
LED goes out. If the LED does not follow the pattern described or operates
in any other manner (such as continually flashing or remaining weakly lit),
the card should be replaced.
The analog line card contains an 8051-family microprocessor that provides
the following functions:
— self-identification
— self-test
— control of card operation
— status report to the controller
— maintenance diagnostics