DARPANET (Defense Advanced Research Projects Agency Network)

An early United States

government network that merged with the ARPANET (Advanced Research Projects Agency Network)

to form the DARPA Internet, which eventually gave rise to the Internet.

• Atom Publishing Protocol (APP)
• ATSC
• ATSC (Advanced Television Systems Committee)
• Attached Resource Computer Network (ARCNET)
• attachment unit interface (AUI)
• attendant access
• attenuation
• attenuation-to-crosstalk ratio (ACR)
• attenuator
• ATU-C (ADSL Transmission Unit-Centralized)
• ATU-R (ADSL Transmission Unit-Remote)
• audio
• audio
• Audio Messaging Interchange Specification (AMIS)
• Audio Messaging Interchange Specification (AMIS)
• audiotex
• audiotext
• AUI (Attachment Unit Interface)
• authentication
• authorization
• authorization code
• auto dialer (automatic dialer)
• automated attendant
• automatic callback
• automatic call distributor (ACD)