analog telephone adapter

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analog telephone adapter

A device that adapts a subscriber's analog telephones to a digital voice service from a VoIP, cable or DSL provider. Connecting to the modem, router or directly to the cable coming into the premises, the analog telephone adapter (ATA) delivers dial-tone, manages the call setup and provides the conversion between digital and analog voice.


VoIP ATA
With this adapter, an analog telephone is connected to either a router (LAN) or the Internet (WAN) for VoIP service. For telco company (PSTN) backup, it includes an FXO port. See SIP and FXS. (Image courtesy of Grandstream Networks, Inc., www.grandstream.com)







Cable ATA
In this earlier Comcast cable example, the coax line was split between the ATA and cable modem. The ATA was wired to an analog telephone for voice, and the cable modem connected to the router for data. New gateways from Comcast include the telephone modem, cable modem and wireless router in one device. See VoIP modem.
References in periodicals archive ?
VoIP adapter technology is not the best choice for every enterprise VoIP deployment.
More functional and interoperable than analog telephone adapters, VoIP adapters pass VoIP features through to the handset, while enhanced features requiring a larger screen are accessed through a Web browser.
VoIP adapters use the SIP protocol and translate IP packets from the VoIP platform into proprietary handset signaling, and vice versa for outbound voice.
VoIP adapters are deployed on-premise, in the phone closet, at each enterprise location.
Generally, the older or the lower the quality of your phones and other equipment, the more likely it is that VoIP adapters may not work well, or that the quality of calls will be poor.
The DUALjack is also compatible with cordless and corded phones, answering machines, fax machines, PC modems, digital video recorders and VoIP Adapters
Covering the full spectrum of the "digital life," Actiontec develops devices and services including broadband modems, home gateways, wireless networking devices, routers, VoIP adapters, and digital entertainment devices.