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Contents

Chapter 1 - Introduction and Description

Introduction .......................................................................................................................................................6
Product Description........................................................................................................................................... 6
Features............................................................................................................................................................ 6
Technical Specifications.................................................................................................................................... 7
Physical Dimensions......................................................................................................................................... 9
Test/Demo Board Specifications..................................................................................................................... 10
Test/Demo Board Block Diagram.............................................................................................................. 11
MT3334SMI Pin-out ........................................................................................................................................12
Typical Application.................................................................................................................................... 13
MT3334SMI Design Considerations................................................................................................................ 14
Hardware Considerations .........................................................................................................................14
PC Board Layout Considerations.............................................................................................................. 15
MT3334SMI Placement ............................................................................................................................16
Telecom Labeling Requirements...............................................................................................................17

Chapter 2 - AT Commands, S-Registers, and Result Codes

Introduction .....................................................................................................................................................20
S-Registers .....................................................................................................................................................28
Result Codes................................................................................................................................................... 30

Chapter 3 - Class 1 Fax Commands

Introduction .....................................................................................................................................................32
Class 1 Fax Command Summary............................................................................................................. 32

Chapter 4 - Class 2 Fax Commands

Introduction .....................................................................................................................................................42
Class 2 Fax Command Implementation.................................................................................................... 42
Class 2 Fax Commands (EIA SP-2388 August 1990)...............................................................................42

Chapter 5 - Remote Configuration

Introduction .....................................................................................................................................................52
Basic Procedure.............................................................................................................................................. 52
Setup ........................................................................................................................................................52

Chapter 6 - Troubleshooting

Introduction .....................................................................................................................................................56
Local Analog Loopback Test (V .54 Loop 3)...............................................................................................56
Remote Digital Loopback Test (V.54 Loop 2)............................................................................................57
Local Digital Loopback Test (V.54 Loop 2)................................................................................................58

Chapter 7 - Upgrade Procedure

Introduction .....................................................................................................................................................60
Upgrade Overview ..........................................................................................................................................60
Step 1: Identify the Modem Firmware....................................................................................................... 60
Step 2: Identify the Current Firmware Version.......................................................................................... 60
Step 3: Download the Upgrade File ..........................................................................................................61
Step 4: Extract the Upgrade Files............................................................................................................. 62
Step 5: Clear Your Stored Paramenters ...................................................................................................62
Step 6: Use FlashPro to Upgrade Modem Firmware ................................................................................62
Step 7: Restore Your Parameters............................................................................................................. 62