Multi-tech-systems BL-Series Manual de usuario

BL-SeriesIntelligent Data/Fax ModemUser Guide

10MultiModemBL User Guide1.3 Modem FeaturesThe MultiModem BL Series modem connections can be made on Public Switched TelephoneNetworks (PSTNs) and/or

100MultiModemBL User Guide8.3 Digital Loopback Test/V.54 Loop 2 (Local/Manual)In this test, your modem must be On-Line with another modem that can res

101Chapter 8 - Modem Testing8.4 Digital Loopback Test/V.54 Loop 2 (Remote/Automatic)In this test, your modem must be On-line with another modem set up

102MultiModemBL User Guide8.5 Back-to-Back TestThis test lets you connect two MultiModems with an RJ-11 cable to verify proper operation. Using amodem

103Chapter 8 - Modem Testing8.6 Synchronous Mode TestingThe following tests must be run with your modem in Synchronous mode (DIP Switch #12 in the Up(

104MultiModemBL User Guide8.8 Digital Loopback Test (Local/Manual) (Synchronous Mode)This test must be run when you have a data connection with anothe

105Chapter 8 - Modem Testing8.9 Digital Loopback Test (Remote/Automatic) (Synchronous Mode)This test must be run when you have a data connection with

106MultiModemBL User Guide

Chapter 9 - DIP-Switch Settings

108MultiModemBL User Guide9.1 IntroductionThere are several DIP-Switch options on the modem’s printed circuit (PC) board. The DIP-Switchesare accessib

109Chapter 9 - DIP-Switch Settings9.2 DIP-Switch Option SettingsSwitch #1Forced DTR -- "DTR"(Asynchronous/Synchronous Mode/Leased Line/Dial-

11Chapter 1 - Introduction and Description1.3.3 1432 Series FeaturesYour MT1432BL modem is designed according to the international CCITT V.32bis speci

110MultiModemBL User Guide*Switch #3dB Transmission Levels(Asynchronous/Synchronous Mode/Leased Line)2834 Series:DIP-Switch #3 adjusts dB transmission

111Chapter 9 - DIP-Switch SettingsSwitch #5Enable/Disable Auto-Answer - "Ans"(Asynchronous Mode/Synchronous Mode/Dial-Up)In some originate-o

112MultiModemBL User GuideSwitch #7Request To Send Forced - "RTS"(Asynchronous/Synchronous Mode/Leased Line/Dial-Up)If your computer or term

113Chapter 9 - DIP-Switch SettingsSwitch #11"AT" Responses/Multi-Tech Responses(Asynchronous Mode/Leased line/Dial-Up)In Asynchronous mode,

114MultiModemBL User Guide1932 Series:19200 bps Operation = Switch #13 UP and Switch #14 UP14400 bps Operation = Switch #13 DN and Switch #14 UP9600 b

115Chapter 9 - DIP-Switch Settings9.4 Recording Option ConfigurationsThis section lets you record any changes you may have made to the DIP-Switch sett

116MultiModemBL User GuideDIP Switches #13-14Note: The modem baud rate command ($MBn) overrides the setting of these speed selectionswitches (DIP swit

Chapter 10 - Warranty, Service and Tech Support

118MultiModemBL User Guide10.1 IntroductionThis chapter starts out with statements about your modem's 5-year warranty. The next section, TechSupp

119Chapter 10 - Warranty, Service and Tech Support10.3 Tech SupportMulti-Tech has an excellent staff of technical support personnel available to help

12MultiModemBL User Guide1.5 Technical SpecificationsYour data/fax modem meets the specifications listed below:Tradename MultiModemIITMModel Numbers28

120MultiModemBL User Guide10.5 The Multi-Tech BBSFor customers who do not have Internet access, Multi-Tech maintains a bulletin board system (BBS)that

121Chapter 10 - Warranty, Service and Tech Support10.5.1 Upgrading the MultiModemThe MultiModem has a Flash PROM which contains firmware code for the

122MultiModemBL User Guide10.8 About Ordering AccessoriesSupplyNet, Inc. can supply you with replacement transformers, cables and connectors for selec

Appendixes

124MultiModemBL User GuideAppendix A - TroubleshootingYour modem was thoroughly tested at the factory before it was shipped. If you are unable to make

125Appendix A - Troubleshooting• If you don’t get an OK, the problem may still be in the communications software. Make sure youhave done whatever is n

126MultiModemBL User GuideThe Modem Dials But Cannot Make a ConnectionThere can be several reasons the modem fails to make a connection. Possibilities

127Appendix A - TroubleshootingThe Modem Disconnects While On-line• If you have call waiting on the same phone line as your modem, it may interrupt yo

128MultiModemBL User GuideI Am Losing Data• If you are using data compression and a high speed serial port, set the serial port baud rate tofour times

129Appendix B - ASCII Conversion ChartAppendix B - ASCII Character Code/Hex/Decimal Conversion ChartCTRL CODE HEX DEC CODE HEX DEC CODE HEX DEC CODE

13Chapter 1 - Introduction and DescriptionData CompressionAll models: V.42bis, (4:1 throughput) or MNP 5 (2:1 throughput) datacompressionSpeed Convers

130MultiModemBL User GuideAppendix C - Dial Pulse and Tone-Dial FrequenciesDial PulsesClosedOpenBADigit 2 Digit 1In the example above, the digit 2 is

131Appendix D - AT Command SummaryAppendix D - Command SummaryCommand Values DescriptionAT Attention Code that precedes most command stringsexcept A/,

132MultiModemBL User GuideCommand Values Description***Bn n = 0 or 1 * B0 selects V.21 answer tone.B1 selects Bell answer tone.&Bn n = 0 or 1 * &a

133Appendix D - AT Command SummaryCommand Values Description&En n = 0 thru 15 &E0 means no error correction.* &E1 means V.42 Auto-reliable

134MultiModemBL User GuideCommand Values Description$Hn n = 1 thru 3 $H1 brings up Help Screen #1.$H2 brings up Help Screen #2.$H3 brings up Help Scre

135Appendix D - AT Command SummaryCommand Values Description1432 Series:$MB75 selects CCITT V.23 mode.$MB300 selects 300 bps on-line.$MB1200 selects 1

136MultiModemBL User GuideCommand Values DescriptionSr? r = 0-11, 13, Reads value of Register “r” and displays15-19, 24-26, value in 3-digit Decimal f

137Appendix D - AT Command SummaryCommand Values DescriptionVn n = 0 or 1 V0 means Result Codes sent as digits (terseresponse).* V1 means Result Codes

138MultiModemBL User GuideCallback Security/Remote Configuration Command SummaryCommand Description#DBn #DB0 disables Callback Security and answering

139Appendix D - AT Command SummaryPassword Command SummaryCommand Description#Ixxxxxxxxxx Login Password is any keyboard characters (x)(upper/lower ca

14MultiModemBL User GuideFax Carrier FrequenciesAll models: V.21CH2 (Half Duplex)1650Hz Mark, 1850Hz Space for Transmit Originate1650Hz Mark, 1850Hz S

140MultiModemBL User GuideAppendix E - DIP-Switch SummaryAsynchronous ModeDIP-Switch Condition Effect#1 UP* DTR dependent on interfaceDown DTR forced

141Appendix E - DIP-Switch SummarySynchronous ModeDIP-Switch Condition Effect#1 UP* DTR Dependent On interfaceDown DTR forced On at all times#2 UP* SD

142MultiModemBL User GuideDIP Switches #13-14Note: The modem baud rate command ($MBn) overrides the setting of these speed selectionswitches (DIP swit

143Appendix F - S-Register SummaryAppendix F - S-Register SummaryS-REGISTER UNIT RANGE DEFAULT DESCRIPTIONS0 1 ring 0-255 1 Sets number of rings befor

144MultiModemBL User GuideS-REGISTER UNIT RANGE DEFAULT DESCRIPTIONS24 50 mSec 0-255 20 Sets DSR/CTS/CD dropout time. Default(20) equals one second.S2

145Appendix G - Result Code SummaryAppendix G - Result Code SummaryTERSE (Digit) VERBOSE (Words) Effect0 OK Command was executed without error; ready

146MultiModemBL User GuideNote: If the modem is used in MNP Reliable mode, the following responses change:1R CONNECT RELIABLE5R CONNECT 1200 RELIABLE9

147Appendix H - V.25bis OperationAppendix H - V.25bis OperationChapter 5 described a set of commands which let the modem dial, hang-up, and be configu

148MultiModemBL User GuideAnother asynchronous mode concern is the problem of connecting at a different speed than thespeed at which the serial port i

149Appendix H - V.25bis OperationV.25bis Mode AT CommandsThe following commands will either alter standard V.25bis behavior (so you must be careful in

15Chapter 1 - Introduction and DescriptionReceiver SensitivityAll models: -43 dBm under worst case conditionsAGC Dynamic RangeAll models: 43 dBInterfa

150MultiModemBL User GuideV.25bis AT CommandsThe AT commands associated with V.25bis mode are described as follows. Note that one commandenables and d

151Appendix H - V.25bis OperationListing Delayed Phone Numbers (RLD) CommandWhen a phone number is dialed by a CRN command and a connection is not mad

152MultiModemBL User GuideITU V.25bis Country Specific InformationDue to the flexibility of the V.25bis standard, each country may establish specific

153Appendix H - V.25bis Operation4. Francea) Command/Indication modification (none)b) Delay and Forbidden list behavior1. 2 min. delay after 1st call,

154MultiModemBL User GuideAppendix I - MultiModemBL CablesThese cables connect your modem to your terminal or computer’s serial port.25-PIN DTEConnect

155Appendix J - RS-232C Interface Specifications25 POSMALE DSUB8 POS.MINI-DINTD 2RCV 3RTS 4CTS 5GND 71 Handshake Out2 Handshake In4

156MultiModemBL User GuideAppendix J - RS-232C Interface SpecificationsThe modem's RS-232C interface circuits have been designed to meet the elec

157Appendix J - RS-232C Interface SpecificationsFunctional Description of RS-232C Signals:Transmitted Data - Pin 2, SD (BA)Direction: to modemSignals

158MultiModemBL User GuideTest Voltage - Pin 9, XVDirection: from modemThe XV lead has 330 ohms of resistance to +12 volts DC. This lead may be used t

159Appendix J - RS-232C Interface SpecificationsExternal Transmit Clock - Pin 24, XTCDirection: to modemSupplies the same function as transmit clock o

16MultiModemBL User Guide1.6 PowerPower is supplied through an AC power transformer terminated with a standard two-prong plug. Thetransformer supplies

160MultiModemBL User GuideAppendix K - Regulatory InformationCompliance with BABT RequirementsApproved for connection to telecommunications system spe

161Appendix K - Regulatory InformationAll other apparatus connected to this modem and thereby connected directly or indirectly to theBritish Telecom p

162MultiModemBL User GuideInternational Modem RestrictionsSome dialing and answering defaults and restrictions may vary for international modems. Chan

163Appendix K - Regulatory InformationFCC Regulations for Telephone Line Interconnection1. This equipment complies with Part 68 of the Federal Communi

164MultiModemBL User GuideCanadian Limitations NoticeNotice: The ringer equivalence number (REN) assigned to each terminal device provides anindicatio

165IndexIndexSymbols&E0 ...32&E1 ...

166MultiModemBL User GuideDiagnostics...15Dial (D) ...

167IndexMMAC Cable ...155Macintosh computer ... 28, 31Maximum Thr

168MultiModemBL User GuideSpeed Conversion ($BA) ...70Speed Switches ... 1

17Chapter 1 - Introduction and Description(24.0) 24,000 bps. (2834 models only). This LED is lit when the modem is connected at 24,000 bps.Note: if th

18MultiModemBL User Guide

Chapter 2 - Installation and Connection

User Guide88312100 Revision AMultiModemII Models:MT2834BL/MT2834BLI/MT2834BLKMT1932BL/MT1932BLI/MT1932BL-MacMT1432BL/MT1432BLI/MT1432BLKThis publicati

20MultiModemBL User Guide2.1 What is in Your Modem Package?Your MultiModem is made up of many components. Make sure you have them all before trying to

21Chapter 2 - Installation and Connection2.2 InstallationThe installation of the modem consists of making the physical connections necessary to render

22MultiModemBL User GuidePHONE PSTNONOFFPOWEREIA RS232CVOLUMELEASEFigure 2-2. MultiModemBL/BLI Connections4 Attach the EIA RS-232C connector on the mo

23Chapter 2 - Installation and Connection2.2.4 Cabling Procedure (MT1432BLK and MT2834BLK)Step Procedure1 Verify that the settings for DIP-Switch #5 a

24MultiModemBL User Guide2.3 Loading Trio DataFAX SoftwareThe following procedure will guide you through the installation of Trio DataFAX software. Th

25Chapter 2 - Installation and Connection9 Click Yes to read the Release Notes. when you are finished, close the release notes dialog andthe Trio Setu

26MultiModemBL User Guide15 Click Next Dialog. The Phone Numbers and Prefixes dialog is displayed.16 Follow the on-screen instructions and when you ar

Chapter 3 - Software Configuration and Modem Basics

28MultiModemBL User Guide3.1 IntroductionChapter 2 guided you through the installation of Trio communications software. If you are using adifferent so

29Chapter 3 - Software Configuration3.2.2 The 16550 UART and Windows 3.1Windows 3.1 may cause a loss of data when communicating at high speed, even wi

ContentsChapter 1 - Introduction and Description1.1 Introduction...

30MultiModemBL User Guide3.4 PC Initialization StringsWe recommend the following initialization string for a MultiModem connected to a PC-compatibleco

31Chapter 3 - Software Configuration3.5 Macintosh InitializationMacintosh computers cannot use RTS/CTS hardware flow control without a serial cable wi

32MultiModemBL User Guide3.6.3 File Transfer ProtocolsWhen you upload or download files with your modem, the host computer will ask which file transfe

33Chapter 3 - Software Configuration3.8 Modem BasicsYou control your modem by issuing AT commands, setting S-Registers, and setting DIP-Switches.You c

34MultiModemBL User Guide

Chapter 4 - Manual Dial and Automatic Answer

36MultiModemBL User Guide4.1 IntroductionWe’ll assume that yours is the very common application, where you are using a modem to dial up aremote comput

37Chapter 4 - Manual Dial and Automatic Answer4.3 Automatic Leased Line Restoral OperationWhen the modem is in Dial Backup mode, it periodically check

38MultiModemBL User Guide4.6 Dial-Up OperationWhen your modem is used as a dial-up modem (DIP-Switch #10 in the UP position), it can bothoriginate and

39Chapter 4 - Manual Dial and Automatic Answer4.8 Automatic AnsweringThe modem can be used as an automatic answering modem. No special modifications o

Chapter 4 - Manual Dial and Automatic Answer4.1 Introduction...

40MultiModemBL User Guide4.10 Handshaking DetailsThis section briefly explains what happens between two modems in a normal call. We are assumingthat t

Chapter 5 - Command Mode

42MultiModemBL User Guide5.1 IntroductionAT commands are the means by which you, and your communications software, are able tocommunicate with and con

43Chapter 5 - Command Mode5.1.2 Functional ModesThe MultiModem can be in one of two functional states (see Figure 5-1). These are "Commandmode&qu

44MultiModemBL User Guide5.2 Summary of AT CommandsA wide variety of autodial operations and modem options can be controlled when the modem is inComma

45Chapter 5 - Command ModeCONTROL RS232C &C Carrier Detect ControlINTERFACE &D Data Terminal Ready Control&R Clear To Send Control&S D

46MultiModemBL User GuideEXECUTE %DF Format Line Probe Display (Graph or Table Format)LINE %DP Enable/Disable Reading Line Probe From DSP during hands

47Chapter 5 - Command Mode5.3 Result CodesThe Command mode provides you with several responses, or “Result Codes”, that can aid you inCommand mode ope

48MultiModemBL User Guide"Standard AT" Result Codes2834 SeriesTERSE VERBOSE TERSE VERBOSE0 OK 11 CONNECT 48001 CONNECT 12 CONNECT 96002 RING

49Chapter 5 - Command Mode5.4 Dialing Commands5.4.1 Dialing Action CommandsDial Command DThe letter D in a command causes the modem to dial the teleph

Chapter 8 - Modem Testing8.1 Introduction...

50MultiModemBL User GuideTo activate DTR Dialing, enter AT$D1 and hit RETURN. The modem dials the phone number storedin the N0 location of memory when

51Chapter 5 - Command ModeAutomatic Pauses in Dialing ,You can cause the modem to pause during the dialing sequence by entering a comma characterwhere

52MultiModemBL User Guide"Calling Card" Detect Tones $The modem has the capability to detect AT&T "calling card" tones for the

53Chapter 5 - Command Mode5.4.3 Phone Number Memory CommandsStoring Phone Numbers D...NA telephone number and command line of up to sixty characters m

54MultiModemBL User Guide5.4.4 Configuration and Default Storage CommandsStore Configuration & S-Register Parameters in Non-Volatile Memory &W

55Chapter 5 - Command ModeUnix UUCP Spoofing $SPThe modem can be configured in a Unix environment that employs ACK flow control as a means ofmonitorin

56MultiModemBL User Guide5.4.5 Command Response (Result Code) CommandsEcho Command Mode Characters EIf the modem is connected to a full-duplex compute

57Chapter 5 - Command ModeResult Codes (Basic and Extended) and Call Progress Selection XThe X Command is used to select one of two possible dialing m

58MultiModemBL User Guide5.4.6 Phone Line Conditioning CommandsGuard Tones (Not Used in BLI or BLK Models) &GThe &G command is used to control

59Chapter 5 - Command ModeFallback Modes When On-Line #FIf line conditions deteriorate, the modem automatically drops its transmission speed (“fallbac

vi

60MultiModemBL User GuideAuto Speed Detect #AThe function of the #A command is to detect and select the operational data rates (the “starting”speeds)

61Chapter 5 - Command Mode5.4.7 RS-232C Interface Control CommandsCarrier Detect Control &CThe &C command allows you to control the status of

62MultiModemBL User GuideData Set Ready Control &SThe &S command allows you to control the status of the Data Set Ready signal (DSR - pin 6) o

63Chapter 5 - Command Mode5.4.8 Error Correction CommandsYou can use AT commands to place your modem one of three V.42 (error correction) modes ofoper

64MultiModemBL User GuideV.42 Mode Select #LThe V.42 standard implements both MNP Class 3 & 4 and LAP-M error correction methods. The V.42Mode Sel

65Chapter 5 - Command ModeEnable/Disable Auto Reliable Fallback Character $FIn Auto-Reliable mode, the modem is given four seconds to establish a Reli

66MultiModemBL User Guide5.4.9 Flow Control CommandsFlow control refers to the techniques used by computer devices to stop and restart the flow of dat

67Chapter 5 - Command ModeXon/Xoff Pass-Through &E7So far, you have had three choices to make regarding pacing:1. You can set the modem to respond

68MultiModemBL User GuideNormal Mode Modem Flow Control On &E11When two MultiModems are connected in Normal mode (not using error correction), Xon

69Chapter 5 - Command Mode5.4.10 Compression, Error Correction, Flow Control, Pass-Through and Pacing CommandsThe modem has a variety of commands to c

Chapter 1 - Introduction and Description

70MultiModemBL User Guide5.4.11 Speed Conversion CommandsSpeed conversion is a necessary part of data compression since data must be presented to them

71Chapter 5 - Command Mode1932 Series:AT$MB75 = CCITT V.23AT$MB300 = 300 bpsAT$MB1200 = 1200 bpsAT$MB2400 = 2400 bpsAT$MB4800 = 4800 bpsAT$MB9600 = 96

72MultiModemBL User GuideSerial Port Baud Rate $SBThe $SB command presets the speed of the modem’s serial (RS-232C) port, in both Originate andAnswer

73Chapter 5 - Command Mode5.4.12 Immediate Action CommandsHelp Screens $HThe Help command is designed to give you short explanations on how to use eac

74MultiModemBL User GuideListing On-Line Diagnostics L8The L8 command displays the current on-line CONNECT status of the modem. This display can bepri

75Chapter 5 - Command ModeForce Answer Mode AYou can force the modem into Answer mode with the modem’s A command.Entering ATA when in Command mode imm

76MultiModemBL User Guide

Chapter 6 - S-Registers

78MultiModemBL User Guide6.1 IntroductionCertain Command Mode configurations are stored in memory registers called, S-Registers. The Scommand is used

79Chapter 6 - S-RegistersS4Line Feed CharacterUnit: ASCII CharacterRange: 0-127Default: 10 (^J)Description: S4 defines the character recognized as Lin

8MultiModemBL User Guide1.1 IntroductionWelcome to the world of data communications. You have acquired one of the finest intelligentdesktop data/fax m

80MultiModemBL User GuideS9Carrier Detect Response TimeUnit: 100 mSec.Range: 1-255Default: 6Description: S9 sets the time delay between when the modem

81Chapter 6 - S-RegistersS15Callback Time DelayUnit: SecondsRange: 10-255Default: 20Description: S15 defines the time delay between Callback attempts

82MultiModemBL User GuideS24PBX/CBX Disconnect Drop Time for DSR/CTS/CDUnit: 50 mSec.Range: 0-255Default: 20Description: Some PBX and CBX phone system

83Chapter 6 - S-RegistersS30Inactivity TimerUnit: 1 min.Range: 0-255Default: 0Description: S30 causes the modem to disconnect if no data is transmitte

84MultiModemBL User GuideS48Program V.34bis Connect Speeds (2834 Series only)Unit: N/ARange: 33, 31, 28, 26, 24, 21,19,16,14,12, 96 and 48Default: 0De

85Chapter 6 - S-Registers6.2 Reading and Assigning S-Register ValuesThe S command is used to assign a value to, and to read the current value of, an S

86MultiModemBL User Guide6.3 AT Command and S-Register SummaryThe vast majority of installations are similar, with the modem being used to dial up a r

Chapter 7 - Callback Security andRemote Configuration

88MultiModemBL User Guide7.1 IntroductionThis chapter describes how the MultiModem’s Callback and Remote Configuration features operate.These features

89Chapter 7 - Callback Security and Remote Configuration7.3 Remote Configuration DescriptionThe Remote Configuration feature is a network management t

9Chapter 1 - Introduction and DescriptionChapter 5 - AT Command Mode OperationChapter 5 may be the most important chapter of this manual. It begins wi

90MultiModemBL User GuideTo turn your modem's Callback Security feature on and off:7. If you want Callback Security with both remote and local pa

91Chapter 7 - Callback Security and Remote ConfigurationThe + and/or - characters entered before the phone number are optional. The + (DepositNumber)

92MultiModemBL User Guide7.3.2 Remote Configuration ProceduresThe procedures for using the Remote Configuration features are the same whether or not a

93Chapter 7 - Callback Security and Remote Configuration7.4 Remote Configuration and Callback Security AT CommandsThe following AT commands are used w

94MultiModemBL User GuideErase Callback Password #RCBNxxThis command erases the single callback password specified by xx (0 through 29).Erase Callback

95Chapter 7 - Callback Security and Remote Configuration7.5 Remote Configuration/Callback Security S-RegistersThe following S-Registers are used with

96MultiModemBL User Guide

Chapter 8 - Modem Testing

98MultiModemBL User Guide8.1 IntroductionEach time you power up the MultiModem, it performs an automatic self- test to ensure properoperation. The mod

99Chapter 8 - Modem Testing8.2 Local Analog Loopback Test/V.54 Loop 3In this test, data from your computer or terminal is sent to your modem's tr