Meridian America 21 Manual De Usuario

 

 

 

 

 

 

 

 

 

 

 

 

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.

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

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 

 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.

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.

For information on the Mean Time Between Failure rate for 

 Dgtl LC,

see Spares Planning  (553-3001-153).