T1 -- a leased line connection capable of carrying data at 1.544 million bits per second. T1 is the fastest speed commonly used to connect networks to the Internet.

T3 -- a leased line connection capable of carrying data at 44.736 million bits per second. This connection is composed of 28 T1 lines and is more than enough to handle full-screen, full-motion video.

Transmission Control Protocol / Internet Protocol (TCP/IP) -- two related protocols that break information into segments, called packets (TCP), and route it across the Internet (IP).

Telecenter -- telecenters are technology hubs within communities that bring a range of advanced, innovative services to where rural people live and work.

Tag Image File Format (TIFF) -- a bitmap graphics file format. It was developed to provide a common format for scanners and is mainly used for that purpose and desktop publishing.