A Data Access Arrangement is a protective circuit, sometimes built within a modem and sometimes housed in a small box that is between the modem and the telephone system. The FCC requires a DAA to protect the telephone network from possible damage caused by failure of the data equipment attached directly to the telephone line. Acoustic couplers are not attached directly to the telephone line, and therefore do not require DAAs. See also: acoustic coupler and modem.
Data Access Arrangement. A module that electrically isolates a connected circuit from the phone line. The FCC requires this for any circuit interfacing with an outside phone line. Also, the module itself must be FCC-approved. (FCC approval costs $$,$$$ so best to buy one of these from a company.)
Data Aggregation Agent. As the increasing demands of marketers and service providers for customer information begin to clash with privacy concerns, new entities called Data Aggregation Agents (DAAs) emerge. By consolidating and controlling outside access to a customer's personal data, DAAs will help businesses provide the customer with relevant and timely offers while protecting individual privacy. The basic function of a DAA would be to act as a central, online storehouse for a consumer's personal information. In a wide-open, wireless world, customers will require their DAAs to shield them from mobile "spam," while sending through messages that truly respond to their needs.
Data Access Arrangement. A device used to connect modems to the switched telephone network.
data access arrangement. Communication equipment furnished by a common carrier that allows attachment of privately owned data transmission equipment (DTE) to the common carrier network.
Data Authentication Algorithm. The most well-known message authentication code (MAC) which is made using DES and a compression method.