Digium offers a full line of high quality analog and digital interface cards to connect your IP PBX, IVR, VoIP Gateway, or custom telephony solution to the public telephone network. Digium also has hybrid cards, voice compression cards, modules, and accessories built specifically for Asterisk.
Digium hardware extends the power of Asterisk to the Public Switched Telephone Network (PSTN) and beyond. Digium is the leading manufacturer of analog and digital interface cards, voice compression modules, redundancy solutions, and IP media gateways for use with the Asterisk open source communications engine.
Digium: The Gold Standard In Asterisk Hardware