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