Specifications

Chapter 2 – SocketModem (MT5600SMI & MT5656SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342F) 55
SocketModem Configuration
MT5600SMI Serial Configuration
The serial interface uses a 20-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 the active SocketModem pins.
Top View – Serial SocketModem Pinout – MT5600SMI (Available with or without LEDs)
MT5656SMI Serial with Voice Configuration
The serial interface uses a 21-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 the active SocketModem pins.
Top View – Serial SocketModem – MT5656SMI Pinout with Voice Configuration
For pin descriptions, see the Universal Pinout Descriptions in Chapter 1.