Specifications

Chapter 4 – SocketModem (MT2456SMI-22)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342F) 88
Chapter 4 – SocketModem
(MT2456SMI-22)
Introduction
The Multi-Tech SocketModem supports analog data modem operation with V.22bis Fast Connect, V.42bis data
compression, and V.80 synchronous access mode. The SocketModem is a space-efficient (1" × 2.5"), embedded
modem that is ready-to-integrate into your applications; therefore, dramatically reducing development time and costs
for system designers.
The MT2456SMI-22 SocketModem is a standard 20-pin modem used for integrating data communications. It is a
single-port 5V or 3.3V modem that integrates a modem controller, DSP, and DAA in a 1" x 2.5" form factor and
communicates to a host controller via an asynchronous serial interface.
Product Ordering Information
Product Description Region
Order this
Product
3
MT2456SMI-22.Rx V.22bis Serial Data 5V Global
MT2456SMI-L-22.Rx V.22bis Serial Data 3.3V Global
Telecom Label
MT2456SMI-LS MT2456SMI-Global Regulatory Label Global
Developer Kit
MTSMI-UDK Universal Developer Kit Global
How to Read the Product Codes in the Table Above:
22 V.22bis
L 3.3 Volt Build
LS Telecom Label
UDK Universal Developer Kit
Other Product Codes:
Rx “R” indicates product revision. “x” is the revision number.