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Description
The NT8DO2AA Digital Line Card (Dgtl LC) is equipped with 16 identical
line circuits housed within an NTSD37AA Intelligent Peripheral Equipment
Module (IPE). Each line circuit provides a multiplexed voice, data, and
signaling path to and from digital apparatus over a a-wire full duplex 5 12
KHz
Time Compression Multiplexed
(KM)
digital link.

.

Meridian SL-1 data block

Each digital telephone and each associated data terminal is assigned a
separate Terminal Number (TN) in the SL-1 System data base.

Physical

Dgtl LC circuitry is contained on a 320 mm (12.5 in.) by 254 mm (10
ii%)
double-sided printed circuit board The pack connects to the backplane via
a 120-pin edge connector.
The faceplate of the Dgtl LC (7/S in. wide) snaps in place on the front of
the pack and is equipped with a red LED which lights only when the pack is
disabled. Upon power-up, the DgtI LC resets and the red LED will turn off
after the Dgtl LC is enabled. The card provides self-identification and fault
detection.
For information on the Mean Time Between Failure rate for the Dgtl LC,
see Spares Planning (553-3001-153).
Digital line card description
553-3001-l 62
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