Introduction 2400 & 1200 bps | Multi-Tech Systems MT3334HD8 instruction

1 Introduction

(2400 & 1200 bps)	Receive answer:	1200 Hz
Carrier Frequencies:	Transmit originate:	1270 Hz mark
Bell 103/113		1070 Hz space
(300 bps)	Receive originate:	2225 Hz mark
		2025 Hz space
	Transmit answer:	2225 Hz mark
		2025 Hz space
	Receive answer:	1270 Hz mark
		1070 Hz space
Carrier Frequencies: Transmit originate:		980 Hz mark
V.21		1180 Hz space
	Receive originate:	1650 Hz mark
		1850 Hz space
	Transmit answer:	1650 Hz mark
		1850 Hz space
	Receive answer:	980 Hz mark
		1180 Hz space
Carrier Frequencies: Transmit originate:		390 Hz mark
V.23		450 Hz space
	Receive originate:	1300 Hz mark
		2100 Hz space
	Transmit answer:	1300 Hz mark
		2100 Hz space
	Receive answer:	390 Hz mark
		450 Hz space
Fax Modulations	V.21Ch2 FSK at 300 bps
	V.27ter DPSK at 4800 and 2400 bps
	V.29 QAM at 9600 and 7200 bps
	V.17 TCM at 14400, 12000, 9600, and 7200 bps
Fax Carrier	V.21 CH2 (half duplex)
Frequencies	1650 Hz mark, 1850 Hz space for transmit originate
	1650 Hz mark, 1850 Hz space for transmit answer
	V.27ter: 1800 Hz Originate/Answer
	V.29 QAM: 1700 Hz Originate/Answer
	V.17 TCM: 1800 Hz Originate/Answer
Transmit Level	-13 dBm
Frequency Stability	+0.01%
Receiver Sensitivity	-43 dBm under worst case conditions
AGC Dynamic Range	43 dB
Serial Interface	EIA RS-232C
Diagnostics	Power-on self-test; ITU-T V.54 local analog loop, local digital loop, remote
	digital loop.
Firmware Upgrades	Flash memory; available on Multi-Tech’s BBS
Indicators	LEDs for Carrier Detect and Off Hook/Out-Of-Service
Environmental	Temperature range: 0°–50° C (32°–120° F)
	Humidity range: 20–90% (noncondensing)

CommPlete Communications Server

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Multi-Tech Systems MT3334HD8 manual Introduction 2400 & 1200 bps

Contents

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 Appendix F Testing the MT3334HD8Warranty, Service, and Technical Support Appendix D Introduction Manual Organization LED IndicatorsPower Supplies Introduction Installation Data Rates Modem Technical Specifications Introduction 2400 & 1200 bps MT3334HD8 User Guide Power Installation MT3334HD8 modem card Safety Warnings Installation Procedure Pre-Installation NotesPage AT Commands Modes of Operation Working with AT CommandsCommand Structure Command Editing AT Commands by Function $BA Continuous Redial Dialing CommandsDial Modifier Commands Ds Dial Wait for New Dial Tone Pulse or Tone Dialing Flash On-Hook Rn Reverse Originate/Answer ModeReturn to Command Mode After Dialing Dialing Pause DsNd Store a Phone Number Phone Number Memory Commands@ Quiet Answer Call Card Tone Detect List Stored Telephone Numbers Configuration Storage and Recall CommandsWn Store Configuration NdNe Number Linking Reset Modem Modem Response Result Code CommandsFn Load Default Configuration Echo Command Mode Characters Result Codes Verbose/Terse Bn Answer Tone Online Connection CommandsAn Answerback #An Auto Speed Detection DTn Dtmf Detection DCn AT Command ControlCDn Cleardown at Disconnect Pn Set Pulse-Dial Ratios #Fn Fallback ModesGn Guard Tones Hn Busy-Out After Disconnect #Tn Trellis-Coded Modulation RDn Square Wave Ring Detect$Tn Calling Tone RAn Asymmetric Bit Rate CommandsFn Echo Canceler Frequency Offset Compensation Yn Long Space Disconnect Dn Data Terminal Ready Control RS-232 Interface CommandsCn Carrier Detect Control SFn DSR/CD Interaction Control Rn Clear to Send ControlSn Data Set Ready Control RFn CTS/RTS Interaction Control En Data Compression Error Correction and Data Compression CommandsEn Error Correction Modes #Ln V.42 Error Correction Modes $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 $MBn Modem Baud Rate L5, L7 List Current Operating Parameters Immediate Action CommandsRepeat Last Command Inquire Product Code Flow Control Commands E5 XON/XOFF Flow Control E3 Flow Control DisableEn Non-Error Correction Mode Flow Control E4 Hardware Flow Control #Xn Number of Xoff Characters Sent En Pacing Computer-Initiated Flow Control Breakatcr Out-of-Band Escape Sequence Force Answer ModeEscape Sequences +++ATCR In-Band Escape Sequence Go Back Online Remote Configuration CommandsAtcr Remote Configuration Escape Sequence #Ixxxxxx Change Login Password DFn Format Line Probe Data Line Probe Commands#Syyyyyy Change Setup Password DPn Read Line Probe Data Ln Display Line Probe Data Diagnostic CommandsTn Respond to Remote Digital Loopback Signal RP Immediate Line Probe Un Loopback Test Modes MT3334HD8 User Guide Registers S2 Escape Code Character RegistersS0 Number of Rings Until Modem Answers S1 Ring Count S6 Wait Time for Dial Tone S7 Time for Carrier Abort TimerS4 Line Feed Character S5 Backspace Character S11 Tone Dialing Spacing and Duration S10 Carrier Loss Disconnect Delay TimeS13 Remote Configuration Escape Character S9 Carrier Detect Response Time S25 DTR Dropout Time S30 Inactivity TimerS34 Command Buffer Length After Online Escape Sequence S24 PBX/CBX Disconnect Drop Time for DSR/CTS/CD S48 Maximum V.34 Connect Speed S94 Out-of-Service TimeS37 DTR Busy-In Time S43 Force V.34 Connect Speed Examples of Reading Values AT Commands that Affect S-RegistersReading and Assigning S-Register Values Examples of Assigning Values AT&E2$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 LoopPage Warranty, Service, and Technical Support Service Limited Warranty Recording Product Information Technical Support Downloading a File Multi-Tech BBSLogging onto the Multi-Tech BBS Bulletins About CompuServeReading a Message Leaving a Message 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 TonesDial 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 ConfigurationBasic 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