Smith On VoIP

The Smith On VoIP Word/Phrase of the Day is Analog Telephone Adaptor (ATA).

An Analog Telephone Adaptor (ATA) is a device that converts analog telephone signals into digital packets for transfer across an IP network. Analog Telephones (small office key systems can also can access to VoIP through an ATA) connect to the the Analog Telephone Adaptor (ATA) via an FXS port and the ATA connects to the IP network via an RJ45 port. Some ATA’s also have an FXO port for connectivity to the PSTN. Analog Telephone Adaptors also convert digital packets back into analog voice streams.

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