Abbreviation for automatic data processing.

Synonym computer system.

Abbreviation for adaptive differential pulse-code modulation.

Abbreviation for automatic data processing equipment.

Asymmetric Digital Subscriber Line

Asymmetric Digital Subscriber Line 2+

A bit-oriented Data-Link-Layer protocol used to provide point-to-point and point-to-multipoint transmission of data frames that contain error-control information.
Note: ADCCP closely resembles high-level data link control (HDLC) and synchronous data link control (SDLC).

1. A telecommunications network architecture that uses databases to facilitate call processing, call routing, and network management, allowing carriers to change the routing of both inbound and outbound calls from moment to moment. [FCC-5]
2. A proposed intelligent-network (IN) architecture that includes both IN/1+ and IN/2 concepts.

A family of television systems that is intended to be improvements over current commercial-quality television.
Note: The ATV family includes improved-definition television (IDTV), extended-definition television (EDTV), and high-definition television (HDTV).

Abbreviation for Aeronautical Emergency Communications System. See Aeronautical Emergency Communications System Plan.