User's Manual

Table of Contents
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342D) 5
Tip and Ring Interface....................................................................................................................................87
Recommended Parts .....................................................................................................................................88
Chapter 5 – SocketModem IP (MT2456SMI-IP).........................................................................................................90
Introduction ...........................................................................................................................................................90
Product Ordering Information................................................................................................................................90
Developer Kit ........................................................................................................................................................90
Technical Specifications .......................................................................................................................................91
SocketModem Configuration.................................................................................................................................93
Serial Configuration .......................................................................................................................................93
Electrical Characteristics.......................................................................................................................................94
3.3 V Serial ....................................................................................................................................................94
Application Notes ..................................................................................................................................................95
Tip and Ring Interface....................................................................................................................................95
Recommended Parts .....................................................................................................................................96
Chapter 6 – SocketEthernet IP (MTXCSEM).............................................................................................................98
Introduction ...........................................................................................................................................................98
Product Ordering Information................................................................................................................................98
Developer Kit ........................................................................................................................................................98
Technical Specifications .......................................................................................................................................99
SocketModem Configuration...............................................................................................................................101
Serial Configuration .....................................................................................................................................101
Electrical Characteristics.....................................................................................................................................102
3.3 V Serial ..................................................................................................................................................102
5 V Serial .....................................................................................................................................................102
Application Notes ................................................................................................................................................103
Ethernet Interface – Non-Isolated Design .................................................................................................... 103
Ethernet Interface – Isolated Design............................................................................................................103
Recommended Parts ...................................................................................................................................103
Chapter 7 – SocketModem ISDN (MT128SMI) ........................................................................................................105
Introduction .........................................................................................................................................................105
Product Ordering Information..............................................................................................................................105
Developer Kit ......................................................................................................................................................105
Technical Specifications .....................................................................................................................................106
SocketModem ISDN Configuration .....................................................................................................................107
Serial Configuration .....................................................................................................................................107
Electrical Characteristics.....................................................................................................................................108
3.3 V and 5 V Serial SocketModem ISDN....................................................................................................108
Application Notes ................................................................................................................................................108
Safety Warning Telecom / ISDN-ST ............................................................................................................ 108
Interface Connector Contact Assignments...................................................................................................108
ISDN Interface .............................................................................................................................................108
Chapter 8 – SocketModem GPRS (MTSMC-G).......................................................................................................110
Product Description.............................................................................................................................................110
Product Ordering Information..............................................................................................................................110
Developer Kit ......................................................................................................................................................110
Technical Specifications .....................................................................................................................................111
Mechanical Dimensions ......................................................................................................................................112
SocketModem Configuration...............................................................................................................................113
Serial Configuration .....................................................................................................................................113
Electrical Characteristics.....................................................................................................................................114
Power Consumption.....................................................................................................................................114
SIM Interface Electrical Characteristics .......................................................................................................115
Application Notes ................................................................................................................................................116
Flashing LED Interface ................................................................................................................................116
SIM Interface ...............................................................................................................................................116
RF Interface .................................................................................................................................................116
Sources for Peripheral Devices ...................................................................................................................117