01. What does XXX stand for?

TLA     Three Letter Acronym

ACL     Access Control List
PIN     Personal Identification Number
TCB     Trusted Computing Base

ALRU    Automatic Line Record Update
AN      Associated Number
ARSB    Automated Repair Service Bureau
ATH     Abbreviated Trouble History
BOC     Bell Operating Company
BOR     Basic Output Report
BOSS    Business Office Servicing System
CA      Cable
COE     Central Office Equipment
COSMOS  Computer System for Main Frame Operations
CMC     Construction Maintenance Center
CNID    Calling Number IDentification
CO      Central Office
COCOT   Customer Owned Coin Operated Telephone
CRSAB   Centralized Repair Service Answering Bureau
DDD     Direct Distance Dialing
ECC     Enter Cable Change
LD      Long Distance
LMOS    Loop Maintenance Operations System
MLT     Mechanized Loop Testing
NPA     Numbering Plan Area
POTS    Plain Old Telephone Service
RBOC    Regional Bell Operating Company
RSB     Repair Service Bureau
SS      Special Service
TAS     Telephone Answering Service
TH      Trouble History
TREAT   Trouble Report Evaluation and Analysis Tool

LOD     Legion of Doom
HFC     Hell Fire Club
TNO     The New Order

ACiD    Ansi Creators in Demand
CCi     Cybercrime International
FLT     Fairlight
iCE     Insane Creators Enterprise
iNC     International Network of Crackers
NTA     The Nocturnal Trading Alliance
PDX     Paradox
PE      Public Enemy
PSY     Psychose
QTX     Quartex
RZR     Razor (1911)
S!P     Supr!se Productions
TDT     The Dream Team
THG     The Humble Guys
THP     The Hill People
TRSI    Tristar Red Sector Inc.
UUDW    Union of United Death Workers
