analog telephone adapter - Computer Definition
A device that connects regular telephones to a broadband cable or DSL network for voice over IP (VoIP) service. Plugging into the cable or DSL modem, the analog telephone adapter (ATA) delivers dial-tone, manages the call setup and provides the conversion between voice signals from an analog telephone and IP packets, and vice versa. Combo Modem and Adapter (E-MTA) If the telephone adapter and cable modem reside in one device, the combination unit is officially an "embedded multimedia terminal adapter" (see VoIP modem). See VoIP, softphone and analog telephone.