FXS Adapter (2 lines) is easy to install and use. The SPA112 works over an IP network to connect analog phones and fax machines to a VoIP service provider.
The Cisco SPA112 is compact in design and compatible with international voice and data standards. It can be used with residential, home-office, and small-business-VoIP service offerings, including full-featured hosted or open source IP PBX environments.
Uses advanced voice quality-of-service (QoS) capabilities and the voice Session Initiation Protocol (SIP) stack
Includes two standard telephone ports, each with an independent phone number, for use with analogue phones
Compatible with all industry voice and data standards and common telephone features such as caller ID, call waiting, and voicemail