Basic Information Unit / Binary DigIT (sometimes as bit) / Built In Test

Phreaker/Hackers Underground Network

Simple Distributed Security Infrastructure

Start Of Message

Rolling On The Floor Laughing And Holding My Side

Datagram Delivery Protocol / Direct Distribution Panel / Distributed Data Processing

High Speed Serial Interface

Neural Information Processing Systems

You're kidding

Tounge tied :-||Angry

Audio Communications Controller

Telephone Answering Device

Rolling On (the) Floor Laughing And Scaring The Cat

See you later

Nested Task (flag) / Network Termination / New Technology (as in Windows NT) / Network Terminal / Northern Telecom

Reliable Transfer Open Request

Traffic Usage Recorder(ing) / Trunk Usage Recording / Trunk Utilization Report

Tree and Tabular Combined Notation

Magnetic Ink Character Recognition

Billion Operations Per Second

Basic Information Unit / Binary DigIT (sometimes as bit) / Built In Test