CircuitWerkes Makers of Innovative Electronics

Custom and OEM › MPC-2

MPC-2 telephone DAA

An FCC-registered telephone interface module you can design into your own product.

About the MPC-2

The MPC-2 is a telephone coupling assembly: a safe, efficient, inexpensive and FCC-legal way to connect your own product or project to a phone line. It comes with all the paperwork and a pass-through type-approval label for the outside of your device, in 5 V or 12 V versions.

Single units are $39.95, with volume discounts from 25 pieces. The MPC-2 is sold only directly from us: pay by check or money order in advance, or by PayPal, which takes credit cards. Call 352-335-6555 or e-mail sales@circuitwerkes.com to order.

  • MPC-2 technical manual (PDF)
  • Designing for Part 68 (PDF): a six-page paper on how the MPC-2 was designed, with a short tutorial on the POTS phone system, construction notes and PCB layouts for etching your own. The layouts print slightly smaller than the real boards, so enlarge them first.

A full article on the MPC-2, with 1:1 artwork, ran in the May 1993 issue of Electronics Now.