| Linked From |  DMERT - Duplex Multiple Environment, Real Time
 NCT - Network Control and Timing
 SMPU - Switch Module Processor Unit
 MCC - Master Control Console
 TU - Trunk Unit
 TSIU - Time Slot Interchange Unit
 ATICS - Automated Toll Integrity Checking System
 DLTU - Digital Line Trunk Unit
 DMERT - Duplex Multiple Environment Real Time
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