An echo check used in public switched networks operating in the full-duplex transmission mode, i.e., the two-way-simultaneous mode.

1. Electronic Countermeasures,
2. Entitlement Control Message.

Equal Cost Multipath Routing

Emergency Context Resolution with Internet Technologies

Event-Driven Architecture

Enhanced Data-Rate for GSM Evolution

In a video display, distortion that is concentrated at or near the edge of objects, and that is categorized further by its temporal and spatial characteristics.

An LED that has a physical structure superficially resembling that of an injection laser diode, operated below the lasing threshold and emitting incoherent light.
Note: Edge-emitting LEDs have a relatively small beam divergence, and thus are capable of launching more optical power into a given fiber than are the conventional surface-emitting LEDs. [After FAA]

Abbreviation for electronic document interchange. A computerized system that allows linked computers to conduct business transactions, such as invoicing and ordering, over a telecommunications network.

Abbreviation for extended-definition television.