Model MTA128ST-USBExternal ISDN Terminal AdapterUser Guide

10MultiModemISDN User GuideMTA128ST-USB

Chapter 2 - Hardware Installation

12MultiModemISDN User GuideMTA128ST-USBIntroductionThis chapter details the contents of the MTA128ST-USB shipping container, describeseach cable conne

13Chapter 2 - Hardware InstallationMTA128ST-USBAssembling the MTA128ST-USBThe only assembly required is to mount the feet on the bottom of your unit (

14MultiModemISDN User GuideMTA128ST-USBConnecting to Your Computer1. Plug the 4-pin flat end (Type A) into a USB port connector on your computer orlap

15Chapter 2 - Hardware InstallationMTA128ST-USBLED IndicatorsThe ten LED indicators on the front panel (see Figure 2-4) of the MTA128ST-USB reportstat

16MultiModemISDN User GuideMTA128ST-USBP1Data ProtocolLights in combination with P2 and 128 LEDs to indicate which data protocol(V.110, V.120, X.75, P

Chapter 3 - Software Installation and Configuration

18MultiModemISDN User GuideMTA128ST-USBIntroductionThis chapter describes how to install the MTA128ST-USB driver software and discusseshow to configur

19Chapter 3 - Software Installation and ConfigurationMTA128ST-USB6. The Add New Hardware Wizard dialog box is displayed.Verify that the “Floppy disk d

User GuideModel MTA128ST-USBP/N 88311700 Revision ACopyright ©1999, by Multi-Tech Systems, Inc.All rights reserved. This publication may not be reprod

20MultiModemISDN User GuideMTA128ST-USBNote: Click My Computer | Properties | Device Manager to see if driver software was installed.Modem Installatio

21Chapter 3 - Software Installation and ConfigurationMTA128ST-USBRemoving Your Old Device from Windows 98/95When your new MTA128ST-USB replaces anothe

22MultiModemISDN User GuideMTA128ST-USBNetwork ConfigurationNetwork Switch Type _____________________________Select the network switch type your ISDN

23Chapter 3 - Software Installation and ConfigurationMTA128ST-USBCall Control ConfigurationPersistent DTR Dialing _______________________A high DTR (D

24MultiModemISDN User GuideMTA128ST-USBISDN MTA128ST-USB Configuration UtilityUse the ISDN MTA128ST-USB Configuration Utility with computers running W

25Chapter 3 - Software Installation and ConfigurationMTA128ST-USBWindows 98/95 Dial-Up NetworkingWindows 98/95 includes a remote-node client called Di

26MultiModemISDN User GuideMTA128ST-USB

Chapter 4 - AT Commands, S-Registersand Result Codes

28MultiModemISDN User GuideMTA128ST-USBIntroductionOne of the ways you can communicate with and configure your MTA128ST-USB is touse AT commands. AT c

29Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBAT Commands by FunctionCommand ImplementationAT Attention codeReturn Command execut

ContentsChapter 1 - Introduction and DescriptionIntroduction ...

30MultiModemISDN User GuideMTA128ST-USBData Call CommandsA AnswerD DialDSn Dial Stored telephone number&Jn Channel BundlingH Hang upIn Display pro

31Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBSwitch Configuration CommandsUse the following commands to select your network swit

32MultiModemISDN User GuideMTA128ST-USBCommand: !D3=nFunction: SAPI-0 Data TEIValues: n = 0–63, 240 (auto), 241 (disable)Default: !D3=240 (Auto TEI)De

33Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBCommand: !N1=nFunction: Data DN/MSN 1Values: n = 25 character stringDefault: null s

34MultiModemISDN User GuideMTA128ST-USBCommand: !Z=nFunction: Rate Adaption ProtocolValues: n = 5, 6, 9, or 12Default: !Z=9 (ML-PPP)Description:Select

35Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBCommand: Sr=nFunction: Set Register ValueValues: r = S-register number; n variesDe

36MultiModemISDN User GuideMTA128ST-USBNote that whereas the &F0 reset command always restores the factorydefault profile, the Z reset command res

37Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBCommand: &EnFunction: Flow ControlValues: n = 3–7, 12, 13Default: &E4, &

38MultiModemISDN User GuideMTA128ST-USBCommand: &FnFunction: Load Quick Setup ProfileValues: n = 0–4Default: &F0Description:For quick setup, t

39Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBCommand: &WnFunction: Store Active ProfileValues: n = 0 or 1Default: &W1 (U

Displaying a Stored Number ... 59Answering

40MultiModemISDN User GuideMTA128ST-USBCommand: $MBnFunction: V.110 Network RateValues: n = 600, 1200, 2400, 4800, 9600, 19200, 38400Default: $MB38400

41Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBData Call CommandsUse these commands to make or configure data calls.Command: AFunc

42MultiModemISDN User GuideMTA128ST-USBCommand: @CONFIGFunction: Start ConfigMenuValues: noneDefault: noneDescription:The @CONFIG command starts the T

43Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBS-RegistersS-registers are sections of memory in which values are stored that affec

44MultiModemISDN User GuideMTA128ST-USBS-Register: S0Function: Number of Rings Until AnswerUnit: 1 ringRange: 0–255Default: 1Description:Sets the numb

45Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBS-Register: S7Function: Wait for Connection (Abort Timer)Unit: 1 secondRange: 0–255

46MultiModemISDN User GuideMTA128ST-USBS-register: S30Function: On-line Inactivity TimerUnit: 1 minuteRange: n=0 Does not disconnectn=1–255Default: 0

47Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBS-Register: S44Function: POTS Port Ring FrequencyUnit: Decimal ASCII codeRange: 2–4

48MultiModemISDN User GuideMTA128ST-USBS-Register: S50Function: Caller Line ID (CLI)Unit: Decimal ASCII codeRange: 0 or 1Default: 1 (enabled)Descripti

49Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBS-Register: S53Function: Maximum X.75 Buffer SizeUnit: 1 byteRange: n=64 - 2048Defa

Chapter 1 - Introduction and Description

50MultiModemISDN User GuideMTA128ST-USB4 Telex8 National standard9 PrivateDefault: 128 (disabled)Description:Modifies the value of Octet 3 of the Call

51Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBS-register: S58Function: Client-side Authentication Protocol NegotiationUnit: Decim

52MultiModemISDN User GuideMTA128ST-USBNote: Using the DBA scheme on the host-side requires that you specify aData Directory Number or MSN. Refer to y

53Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBS-register: S63Function: Bandwidth-on-Demand Low Throughput ThresholdUnit: KbpsRang

54MultiModemISDN User GuideMTA128ST-USBS-register: S66Function: Country Selections for POTS Ring SignalUnit: Decimal ASCII codeRange: n=0–270 Default1

55Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBS-register: S68Function: First Active DurationUnit: 1 msRange: 5–9995Default: 2000

56MultiModemISDN User GuideMTA128ST-USB complete. The PPP Magic-Number Block contains 5 Magic-Numbers in thisimplementation and is the default type.

57Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBAuto-synchronizing allows the TA to adapt to the client’s network rate withoutany n

58MultiModemISDN User GuideMTA128ST-USBUsing AT Commands to Operate the MTA128ST-USB You can configure and operate the MTA128ST-USB entirely with AT c

59Chapter 4 - AT Commands, S-Registers and Result CodesMTA128ST-USBChannel Bundling Flag DialingThe command AT&Jn is used to indicate whether outg

6MultiModemISDN User GuideMTA128ST-USBIntroductionWelcome to the world of data communications. You have acquired one of the finest ISDNterminal adapte

60MultiModemISDN User GuideMTA128ST-USBAnswering a CallYou can answer incoming calls to the TA either manually or automatically. When the TAdetects an

Chapter 5 - Troubleshooting

62MultiModemISDN User GuideMTA128ST-USBIntroductionThis chapter describes basic problems you may run into with your MTA128ST-USB andhow to solve them.

63Chapter 5 - TroubleshootingMTA128ST-USBThe MTA128ST-USB does not respond to commands• Make sure the MTA128ST-USB is plugged in and turned on. (See N

64MultiModemISDN User GuideMTA128ST-USB• The MTA128ST-USB may be defective. If you have another Multi-Tech MTA128ST-USB, try swapping units. If the pr

65Chapter 5 - TroubleshootingMTA128ST-USBYou cannot place two simultaneous data calls• You may not have ordered an ISDN line configuration that suppor

66MultiModemISDN User GuideMTA128ST-USBData is being lost• USB cable is not plugged in.• Make sure the flow control method you selected in software ma

67Chapter 5 - TroubleshootingMTA128ST-USBMTA128ST-USB receives garbage characters when connected to a 3ComImpact IQ terminal adapterMost likely, the I

68MultiModemISDN User GuideMTA128ST-USB

Chapter 6 - Warranty, Service, andTechnical Support

7Chapter 1 - Introduction and DescriptionMTA128ST-USBManual OrganizationThis manual is divided into six chapters and two appendixes:Chapter 1: Introdu

70MultiModemISDN User GuideMTA128ST-USBIntroductionThis chapter begins your MTA128ST-USB’s five-year warranty. If you have questions orproblems with y

71Chapter 6 - Warranty, Service, and Tech SupportMTA128ST-USBTechnical SupportMulti-Tech has an excellent staff of technical support personnel availab

72MultiModemISDN User GuideMTA128ST-USBDownloading a FileIf you know the file name1. From the Main Menu, enter F to access the Files Menu. Then enter

73Chapter 6 - Warranty, Service, and Tech SupportMTA128ST-USBUpgrading the MTA128ST-USB with FlashWizardThe MTA128ST-USB has a flash PROM, which conta

74MultiModemISDN User GuideMTA128ST-USBOrdering AccessoriesSupplyNet, Inc. supplies replacement transformers, cables and connectors for selectMulti-Te

Appendixes

76MTA128ST-USB User GuideMTA128ST-USBAppendix A: Regulatory ComplianceClass B StatementFCC Part 15This equipment has been tested and found to comply w

77Appendix B - Configuration ProfilesMTA128ST-USBEMC, Safety, and Terminal Directive ComplianceThe CE mark is affixed to this product to confirm compl

78MTA128ST-USB User GuideMTA128ST-USBAppendix B: Configuration ProfilesQuick Setup Factory ProfilesFor quick setup, the MTA128ST-USB includes six Quic

79Appendix B - Configuration ProfilesMTA128ST-USBProfile 0 (&F0) — Modem-Like Asynchronous OperationAT COMMAND DESCRIPTION&C1 DCD functions no

8MultiModemISDN User GuideMTA128ST-USBFeaturesThe MTA128ST-USB communicates over public ISDN telephone lines. Features include:• Compatibility with Eu

80MTA128ST-USB User GuideMTA128ST-USBProfile 1 (&F1) — V.110 Asynchronous OperationAT COMMAND DESCRIPTION&C1 DCD functions normally$D0 Disable

81Appendix B - Configuration ProfilesMTA128ST-USBProfile 2 (&F2) — V.120 Asynchronous OperationAT COMMAND DESCRIPTION&C1 DCD functions normall

82MTA128ST-USB User GuideMTA128ST-USBProfile 3 (&F3) — X.75 Asynchronous OperationAT COMMAND DESCRIPTION&C1 DCD functions normally$D0 Disable

83Appendix B - Configuration ProfilesMTA128ST-USBProfile 4 (&F4) — ML-PPP Asynchronous OperationAT COMMAND DESCRIPTION&C1 DCD functions normal

84MTA128ST-USB User GuideMTA128ST-USB

Glossary

86MultiModemISDN User GuideMTA128ST-USBSymbol2B1Q (2 bits, 1 quarternary)—A line code at layer one forthe BRI U interface. Two bits of data (2B) are m

87GlossaryMTA128ST-USBbuffer—A temporary storage register or random accessmemory (RAM), used in all aspects of datacommunications, that prevents data

88MultiModemISDN User GuideMTA128ST-USBdriver—A software module that interfaces between theoperating system and a specific hardware device (e.g.,color

89GlossaryMTA128ST-USBIRQ (interrupt request)—The notification a processorreceives when another portion of the computer’s hardwarerequires its attenti

9Chapter 1 - Introduction and DescriptionMTA128ST-USBTechnical SpecificationsYour MTA128ST-USB terminal adapter meets the following specifications:Tra

90MultiModemISDN User GuideMTA128ST-USBOOHCI (OpenHCI): Open Host Controller InterfaceSpecification for USB. All transfers on the USB areinitiated by

91GlossaryMTA128ST-USBreference point—A connection point between ISDNequipment classes (rather than the specific protocol of theinterconnection). Can

92MultiModemISDN User GuideMTA128ST-USBtelecommunication service—A function, such as bearerservice and teleservice, offered by an RPOA to itscustomer

93GlossaryMTA128ST-USBVV.110—One of the terminal rate adaptation protocols forthe ISDN B-channel. V.110 is more hardware-intensivethan the V.120 B-cha

94MultiModemISDN User GuideMTA128ST-USB

95IndexMTA128ST-USBIndexAAbort timer 45Answering a call 41Automatically 60Manually 60Assembling the modem 13AT commands!C0= 22, 31!C6= 31!D3=

96MultiModemISDN User GuideMTA128ST-USBCompatibilitySwitch 9Configuration 42AT commands 21Dial-Up Networking (DUN) 21Network configuration 21Win

97IndexMTA128ST-USBMSN (multiple subscriber number) 22, 33MTA128ST-USBAccessories, ordering 74Assembling 13AT Commands 25Call control configuratio

98MultiModemISDN User GuideMTA128ST-USBReceives garbage characters when connected to a 3C67V.110 call, caller gets a NO CARRIER message 66V.120 call,