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SPA122 Overview

The Cisco SPA122 is a Small Business Analog Telephone Adapter (ATA) with an integrated router, designed to connect traditional analog telephones or fax machines to a VoIP (Voice over IP) network. It allows small businesses to leverage existing analog equipment while migrating to an IP-based telephony system, supporting two FXS ports for phones or fax devices and one FXO port for PSTN line connectivity.This device features a built-in router with NAT and SPI firewall capabilities, providing secure and reliable internet connectivity for small office environments. The SPA122 supports SIP-based VoIP protocols, ensuring interoperability with a wide range of IP-PBX systems, hosted VoIP services, and SIP providers.