Meridian America 21 Manual Do Utilizador
3
Description
The
Digital Line Card
is equipped with 16 identical
line circuits housed within an
Intelligent Peripheral Equipment
Module
Each line circuit provides a multiplexed voice, data, and
signaling path to and from digital apparatus over a
full duplex 5 12
Time Compression Multiplexed
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.
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
double-sided printed circuit board The pack connects to the backplane via
a
double-sided printed circuit board The pack connects to the backplane via
a
edge connector.
The faceplate of the Dgtl LC
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.
disabled.
Upon power-up, the
LC resets and
red LED will turn off
after the Dgtl LC is enabled. The card provides self-identification and fault
detection.
detection.
For information on the Mean Time Between Failure rate for
Dgtl LC,
see Spares Planning (553-3001-153).
Digital line card description
553-3001-l 62
. .