CSTS
Computer Supported Telecommunication/Telephony Standard
ESTSC
Energy Science + Technology Software Center
RSTS
Resource Sharing and Time Sharing
STS
Station to Station Protocol
STS
Synchronous Transfer/Transport Signal
A-GPS
Assisted Global Positioning System
AACS
Advanced Access Content System
AAS
Advanced Automation System
ABATS
Automated Bit Access Test System
ABBS
Apple Bulletin Board System