Multi-Tech Systems MT3334HD8 manual S9 Carrier Detect Response Time, S17 Changing Break Time

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MT3334HD8 User Guide

S8 determines the length of the pause caused by a comma in a dialing command. The default setting is two seconds for the North American model, and four seconds for the International and U.K. models. S8 may be set for up to 255 seconds. S8 also defines the length of time the modem waits before retrying a call after it detects a busy signal. Some computer systems need more than two seconds to reset, in which case you should increase the value of S8.

S9 Carrier Detect Response Time

Unit: 100 ms

Range: 1–255

Default: 6

S9 determines the time delay between when the modem first detects a valid incoming carrier signal and when the modem turns on its Carrier Detect circuit. The default setting is 600 milliseconds (six units of 100 ms each). S9 may be set for up to 25.5 seconds.

S10 Carrier Loss Disconnect Delay Time

Unit: 100 ms

Range: 1–254, 255

Default: 7

S10 defines the length of time after a loss of carrier signal before the modem disconnects. The default setting is 700 ms (seven units of 100 ms each). Maximum delay is 25.4 seconds (decimal 254). Setting the S10 value to 255 causes the modem not to disconnect with loss of carrier.

S11 Tone Dialing Spacing and Duration

Unit: 1 ms

Range: 1–255 (USA) or 80–255 (Canada, U.K., International)

Default: 70 (USA) or 80 (Canada, U.K., International)

S11 sets the speed of tone dialing (spacing and tone duration times). The default value is 70 units for domestic models and 80 units for Canadian and International models, where each unit is one ms. In other words, for domestic modems, each tone is sustained for 70 ms followed by a 70 ms pause. The minimum S11 value allowed by most telephone systems is 50 ms (50 units). Very few telephone systems can handle anything faster than that. The maximum S11 value is 255 ms (255 units).

S13 Remote Configuration Escape Character

Unit: Decimal

Range: 0–127

Default: 37 (%)

S13 defines the remote configuration escape character by its decimal ASCII code. The S13 default is the percent character (decimal 37). When you enter the S13-defined character three consecutive times from a remote site, your modem responds with its remote configuration procedure. A value of 0 disables remote configuration.

S17 Changing Break Time

Unit: 10 ms

Range: 1–255

Default: 25 (250 ms)

S17 defines the break time (space) the modem sends the DTE when it receives a break signal from a remote modem. Break duration is adjustable in 10 millisecond increments. The default is set to 25, for a 250 millisecond break.

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CommPlete Communications Server

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Contents MT3334HD8 Modem User Guide Multi-Tech Systems, Inc Woodale Drive Mounds View, Minnesota CommPlete Communications Server FCC Fax Warning Canadian Limitations NoticeTable of Contents Appendix D Testing the MT3334HD8Warranty, Service, and Technical Support Appendix FIntroduction Introduction LED IndicatorsPower Supplies Manual OrganizationInstallation Technical Specifications Data Rates ModemIntroduction 2400 & 1200 bps MT3334HD8 User Guide Power Installation Safety Warnings MT3334HD8 modem cardPre-Installation Notes Installation ProcedurePage AT Commands Working with AT Commands Command StructureModes of Operation Command Editing AT Commands by Function $BA Ds Dial Dialing CommandsDial Modifier Commands Continuous RedialPulse or Tone Dialing Wait for New Dial ToneDialing Pause Rn Reverse Originate/Answer ModeReturn to Command Mode After Dialing Flash On-HookCall Card Tone Detect Phone Number Memory Commands@ Quiet Answer DsNd Store a Phone NumberNdNe Number Linking Configuration Storage and Recall CommandsWn Store Configuration List Stored Telephone NumbersModem Response Result Code Commands Fn Load Default ConfigurationReset Modem Echo Command Mode Characters Result Codes Verbose/Terse #An Auto Speed Detection Online Connection CommandsAn Answerback Bn Answer ToneDCn AT Command Control CDn Cleardown at DisconnectDTn Dtmf Detection Hn Busy-Out After Disconnect #Fn Fallback ModesGn Guard Tones Pn Set Pulse-Dial RatiosRDn Square Wave Ring Detect $Tn Calling Tone#Tn Trellis-Coded Modulation Yn Long Space Disconnect CommandsFn Echo Canceler Frequency Offset Compensation RAn Asymmetric Bit RateRS-232 Interface Commands Cn Carrier Detect ControlDn Data Terminal Ready Control RFn CTS/RTS Interaction Control Rn Clear to Send ControlSn Data Set Ready Control SFn DSR/CD Interaction Control#Ln V.42 Error Correction Modes Error Correction and Data Compression CommandsEn Error Correction Modes En Data Compression$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 $SBn Serial Port Baud RateInquire Product Code Immediate Action CommandsRepeat Last Command L5, L7 List Current Operating ParametersFlow Control Commands E4 Hardware Flow Control E3 Flow Control DisableEn Non-Error Correction Mode Flow Control E5 XON/XOFF Flow ControlEn Pacing Computer-Initiated Flow Control #Xn Number of Xoff Characters Sent+++ATCR In-Band Escape Sequence Force Answer ModeEscape Sequences Breakatcr Out-of-Band Escape Sequence#Ixxxxxx Change Login Password Remote Configuration CommandsAtcr Remote Configuration Escape Sequence Go Back OnlineDPn Read Line Probe Data Line Probe Commands#Syyyyyy Change Setup Password DFn Format Line Probe DataRP Immediate Line Probe Diagnostic CommandsTn Respond to Remote Digital Loopback Signal Ln Display Line Probe DataUn Loopback Test Modes MT3334HD8 User Guide Registers S1 Ring Count RegistersS0 Number of Rings Until Modem Answers S2 Escape Code CharacterS5 Backspace Character S7 Time for Carrier Abort TimerS4 Line Feed Character S6 Wait Time for Dial ToneS9 Carrier Detect Response Time S10 Carrier Loss Disconnect Delay TimeS13 Remote Configuration Escape Character S11 Tone Dialing Spacing and DurationS24 PBX/CBX Disconnect Drop Time for DSR/CTS/CD S30 Inactivity TimerS34 Command Buffer Length After Online Escape Sequence S25 DTR Dropout TimeS43 Force V.34 Connect Speed S94 Out-of-Service TimeS37 DTR Busy-In Time S48 Maximum V.34 Connect SpeedExamples of Assigning Values AT Commands that Affect S-RegistersReading and Assigning S-Register Values Examples of Reading ValuesAT&E2$SP1#L3$R0$MB19200$SB115200$EB1S0=10&W0CR Testing the MT3334HD8 Test procedure Local Analog Loopback Test V.54 LoopTesting the MT3334HD8 Remote Digital Loopback Test V.54 LoopDial the remote modem and establish your online connection Local Digital Loopback Test V.54 Loop Local digital loopback testPage Warranty, Service, and Technical Support Limited Warranty ServiceTechnical Support Recording Product InformationMulti-Tech BBS Logging onto the Multi-Tech BBSDownloading a File Leaving a Message About CompuServeReading a Message BulletinsAbout the Multi-Tech Fax-Back Service About the InternetUsing FlashPro to Upgrade Firmware Upgrading the MT3334HD8 FirmwareMT3334HD8 User Guide Appendixes Appendix a Ascii Conversion Chart Ctrl Code HEX DECAppendix B Dial Pulses and Tones Dial PulsesTone Dial Frequencies Figure B-2. Standard Dtmf frequencies Appendix C Result Code Summary Multi-Tech Result Codes &Q0Standard AT Result Codes &Q1 Register Unit Range Default Description Appendix D S-Register SummarySets fixed V.34 connect speed = 28800 bps Appendix E AT Command Summary ReturnCDn 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 ProcedureSetup Changing the Passwords Changing the Remote Escape CharacterIndex 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