Contents
MT3334HD8 Modem User Guide
Multi-Tech Systems, Inc Woodale Drive Mounds View, Minnesota
CommPlete Communications Server
FCC Fax Warning
Canadian Limitations Notice
Table of Contents
Testing the MT3334HD8
Warranty, Service, and Technical Support
Appendix D
Appendix F
Introduction
LED Indicators
Power Supplies
Introduction
Manual Organization
Installation
Technical Specifications
Data Rates Modem
Introduction 2400 & 1200 bps
MT3334HD8 User Guide Power
Installation
Safety Warnings
MT3334HD8 modem card
Pre-Installation Notes
Installation Procedure
Page
AT Commands
Working with AT Commands
Command Structure
Modes of Operation
Command Editing
AT Commands by Function
$BA
Dialing Commands
Dial Modifier Commands
Ds Dial
Continuous Redial
Pulse or Tone Dialing
Wait for New Dial Tone
Rn Reverse Originate/Answer Mode
Return to Command Mode After Dialing
Dialing Pause
Flash On-Hook
Phone Number Memory Commands
@ Quiet Answer
Call Card Tone Detect
DsNd Store a Phone Number
Configuration Storage and Recall Commands
Wn Store Configuration
NdNe Number Linking
List Stored Telephone Numbers
Modem Response Result Code Commands
Fn Load Default Configuration
Reset Modem
Echo Command Mode Characters
Result Codes Verbose/Terse
Online Connection Commands
An Answerback
#An Auto Speed Detection
Bn Answer Tone
DCn AT Command Control
CDn Cleardown at Disconnect
DTn Dtmf Detection
#Fn Fallback Modes
Gn Guard Tones
Hn Busy-Out After Disconnect
Pn Set Pulse-Dial Ratios
RDn Square Wave Ring Detect
$Tn Calling Tone
#Tn Trellis-Coded Modulation
Commands
Fn Echo Canceler Frequency Offset Compensation
Yn Long Space Disconnect
RAn Asymmetric Bit Rate
RS-232 Interface Commands
Cn Carrier Detect Control
Dn Data Terminal Ready Control
Rn Clear to Send Control
Sn Data Set Ready Control
RFn CTS/RTS Interaction Control
SFn DSR/CD Interaction Control
Error Correction and Data Compression Commands
En Error Correction Modes
#Ln V.42 Error Correction Modes
En Data Compression
$En V.42 Error Correction at 300 bps
$Fn Auto-Reliable Fallback Character Enable/Disable
$An Auto-Reliable Buffering
Speed Conversion Commands
$BAn Baud Adjust
$Rn Retransmit Count
$MBn Modem Baud Rate
$SBn Serial Port Baud Rate
Immediate Action Commands
Repeat Last Command
Inquire Product Code
L5, L7 List Current Operating Parameters
Flow Control Commands
E3 Flow Control Disable
En Non-Error Correction Mode Flow Control
E4 Hardware Flow Control
E5 XON/XOFF Flow Control
En Pacing Computer-Initiated Flow Control
#Xn Number of Xoff Characters Sent
Force Answer Mode
Escape Sequences
+++ATCR In-Band Escape Sequence
Breakatcr Out-of-Band Escape Sequence
Remote Configuration Commands
Atcr Remote Configuration Escape Sequence
#Ixxxxxx Change Login Password
Go Back Online
Line Probe Commands
#Syyyyyy Change Setup Password
DPn Read Line Probe Data
DFn Format Line Probe Data
Diagnostic Commands
Tn Respond to Remote Digital Loopback Signal
RP Immediate Line Probe
Ln Display Line Probe Data
Un Loopback Test Modes
MT3334HD8 User Guide
Registers
Registers
S0 Number of Rings Until Modem Answers
S1 Ring Count
S2 Escape Code Character
S7 Time for Carrier Abort Timer
S4 Line Feed Character
S5 Backspace Character
S6 Wait Time for Dial Tone
S10 Carrier Loss Disconnect Delay Time
S13 Remote Configuration Escape Character
S9 Carrier Detect Response Time
S11 Tone Dialing Spacing and Duration
S30 Inactivity Timer
S34 Command Buffer Length After Online Escape Sequence
S24 PBX/CBX Disconnect Drop Time for DSR/CTS/CD
S25 DTR Dropout Time
S94 Out-of-Service Time
S37 DTR Busy-In Time
S43 Force V.34 Connect Speed
S48 Maximum V.34 Connect Speed
AT Commands that Affect S-Registers
Reading and Assigning S-Register Values
Examples of Assigning Values
Examples of Reading Values
AT&E2$SP1#L3$R0$MB19200$SB115200$EB1S0=10&W0CR
Testing the MT3334HD8
Test procedure
Local Analog Loopback Test V.54 Loop
Testing the MT3334HD8
Remote Digital Loopback Test V.54 Loop
Dial the remote modem and establish your online connection
Local Digital Loopback Test V.54 Loop
Local digital loopback test
Page
Warranty, Service, and Technical Support
Limited Warranty
Service
Technical Support
Recording Product Information
Multi-Tech BBS
Logging onto the Multi-Tech BBS
Downloading a File
About CompuServe
Reading a Message
Leaving a Message
Bulletins
About the Multi-Tech Fax-Back Service
About the Internet
Using FlashPro to Upgrade Firmware
Upgrading the MT3334HD8 Firmware
MT3334HD8 User Guide
Appendixes
Appendix a Ascii Conversion Chart
Ctrl Code HEX DEC
Appendix B Dial Pulses and Tones
Dial Pulses
Tone Dial Frequencies
Figure B-2. Standard Dtmf frequencies
Appendix C Result Code Summary
Multi-Tech Result Codes &Q0
Standard AT Result Codes &Q1
Register Unit Range Default Description
Appendix D S-Register Summary
Sets fixed V.34 connect speed = 28800 bps
Appendix E AT Command Summary
Return
CDn
AT Command Summary
$Fn
Command Values Description
Command Values Description $MBn
RAn
Command Values Description SFn
Command Values Description #Vn
Breakatcr
Appendix F Remote Configuration
Basic Procedure
Setup
Changing the Passwords
Changing the Remote Escape Character
Index
MT3334HD8 User Guide
Index
Long space break
Pacing, 36, 37, 38 enable/disable, 38 ENQ/ACK
Commands Loopback tests, 42, 43, 54, 56 tone detection