Specifications

Chapter 4 – SocketModem (MT2456SMI-22)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342C) 83
SocketModem Configuration
Serial Configuration
The MT2456SMI-22 SocketModem with a serial interface use a 16-pin interface to provide an on-board DAA with tip
and ring connections, audio circuit for call-progress monitoring and serial interface via logic level signals.
Note: The bolded, shaded pins are active Mt2456SMI-22 pins.
Serial SocketModem Pinout