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Multitech MultiModemISDN MTA128ST-USB User Manual

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Summary of Contents for Multitech MultiModemISDN MTA128ST-USB

  • Page 1 Model MTA128ST-USB External ISDN Terminal Adapter User Guide...
  • Page 2 All other trademarks are owned by their respective companies. Multi-Tech Systems, Inc. 2205 Woodale Drive Mounds View, MN 55112 U.S.A (612) 785-3500 or (800) 328-9717 US.. Fax (612) 785-9874 Technical Support (800) 972-2439 BBS (612) 785-3702 or (800) 392-2432 Internet Address http://www.multitech.com...

  • Page 3: Table Of Contents

    Contents Chapter 1 - Introduction and Description Introduction ..............................6 Product Description ............................ 6 Universal Serial Bus (USB) ........................6 Manual Organization ..........................7 Features ..............................8 Technical Specifications ..........................9 Chapter 2 - Hardware Installation Introduction .............................. 12 Unpacking Your MTA128ST-USB ......................12 Safety Warning Telecom/ISDN-ST ......................
  • Page 4 Displaying a Stored Number ......................59 Answering a Call ............................60 Answering Manually ........................... 60 Answering Automatically ........................60 Hanging Up .............................. 60 Chapter 5 - Troubleshooting Introduction .............................. 62 Chapter 6 - Warranty, Service, and Technical Support Introduction .............................. 70 Limited Warranty ............................

  • Page 5: Chapter 1 - Introduction And Description

    Chapter 1 - Introduction and Description...

  • Page 6: Introduction

    MultiModemISDN User Guide Introduction Welcome to the world of data communications. You have acquired one of the finest ISDN terminal adapters (TA) available today from one of America’s oldest and most respected modem manufacturers: Multi-Tech Systems, Inc. This user guide will help you install, configure, test and use your terminal adapter.

  • Page 7: Manual Organization

    Chapter 1 - Introduction and Description Manual Organization This manual is divided into six chapters and two appendixes: Chapter 1: Introduction and Description—Summarizes product features, lists technical specifications, and provides an overview of manual’s organization. Chapter 2: Installation—Describes how to connect the MTA128ST-USB to the computer, to power, to the ISDN BRI line, and to an optional analog device.

  • Page 8: Features

    MultiModemISDN User Guide Features The MTA128ST-USB communicates over public ISDN telephone lines. Features include: • Compatibility with EuroISDN (ETSI/DSS1/NET3), French VN4, and Japanese INS64 switch protocols • USB interface for easy installation; hot-swappable (Windows 98) with other USB devices without restarting or reconfiguring your PC •...

  • Page 9: Technical Specifications

    Chapter 1 - Introduction and Description Technical Specifications Your MTA128ST-USB terminal adapter meets the following specifications: Trade Name MultiModemISDN Model Number MTA128ST-USB (International) Network Interface Four-wire S/T interface Switch Compatibility EuroISDN (ETSI/DSS1/NET3), VN4, INS64, U.S. NI-1, AT&T 5ESS, DMS-100 B-Channel Protocols V.110, V.120, X.75, ML-PPP Voice Coding PCM: A-Law (Europe);...
  • Page 10 MultiModemISDN User Guide MTA128ST-USB...

  • Page 11: Chapter 2 - Hardware Installation

    Chapter 2 - Hardware Installation...

  • Page 12: Introduction

    MultiModemISDN User Guide Introduction This chapter details the contents of the MTA128ST-USB shipping container, describes each cable connection, and describes the LED indicators. Unpacking Your MTA128ST-USB The shipping box contains the MTA128ST-USB, an external power supply, one RJ-45 line cord, one RJ-11 phone cord, one USB cable, your Quick Start Guide, and two diskettes (i.e., the MTA128ST-USB User Guide and the MTA128ST-USB Driver Software).

  • Page 13: Assembling The Mta128St-Usb

    Chapter 2 - Hardware Installation Assembling the MTA128ST-USB The only assembly required is to mount the feet on the bottom of your unit (See Figure 2- 2). Peel the four self-adhesive plastic feet off the backing strip and press them into the recesses on the bottom.

  • Page 14: Connecting To Your Computer

    MultiModemISDN User Guide Connecting to Your Computer 1. Plug the 4-pin flat end (Type A) into a USB port connector on your computer or laptop. Note: Connecting to Power 1. Plug the power supply into the unit’s POWER connector. 2. Plug the power supply into a live AC outlet. 3.

  • Page 15: Led Indicators

    Chapter 2 - Hardware Installation LED Indicators The ten LED indicators on the front panel (see Figure 2-4) of the MTA128ST-USB report status and line activity. USB ISDN Modem with Analog Port Figure 2-4: Front Panel Transmit Data Flashes when data is being transmitted (on for a space, off for a mark). Receive Data Flashes when data is being received (on for a space, off for a mark).

  • Page 16: References

    The World Wide Web is an excellent source of information about terminal adapters in general and terminal adapter installation, configuration, and troubleshooting in particular. The following Web sites are good places to start: • Costmo’s Other Resources Page: http://modems.rosenet.net/or/ • Data Communications FAQ: http://www.best.com/~malch/comfaq.html • Multi-Tech Systems, Inc.: http://www.multitech.com/ MTA128ST-USB...

  • Page 17: Chapter 3 - Software Installation And Configuration

    Chapter 3 - Software Installation and Configuration...

  • Page 18: Introduction

    MultiModemISDN User Guide Introduction This chapter describes how to install the MTA128ST-USB driver software and discusses how to configure the unit to match your ISDN service and remote terminal adapter (TA). Driver Software Installation MTA128ST-USB driver software is installed in Win 98 or Win 95 operating environments. Installing in Windows 98 1.
  • Page 19 Chapter 3 - Software Installation and Configuration 6. The Add New Hardware Wizard dialog box is displayed. Verify that the “Floppy disk drives” option is selected and click Next >. 7. The Add New Hardware Wizard dialog box is displayed. Windows will select the proper driver from the installation disk and will display the information for verification.
  • Page 20 MultiModemISDN User Guide Note: My Computer Properties Device Manager Modem Installation After the driver software has been installed, you will need to install the appropriate modems. These are included on the driver disk shipped with your MTA128ST-USB. 1. Click Start | Settings | Control panel | Modems. 2.

  • Page 21: Removing Your Old Device From Windows 98/95

    Chapter 3 - Software Installation and Configuration Removing Your Old Device from Windows 98/95 When your new MTA128ST-USB replaces another terminal adapter, the old installation remains in Windows 98/95 after you install the new device, and the old device is still selected in HyperTerminal and other Windows 98/95 applications.

  • Page 22: Network Configuration

    MultiModemISDN User Guide Network Configuration Network Switch Type _____________________________ Select the network switch type your ISDN service provider uses at its local central office. You can set the MTA128ST-USB to NET3 (DSS1), VN4, INS64, U.S. NI-1, AT&T 5ESS, or DMS-100. If you don’t know the switch type, get the information from your ISDN service provider.

  • Page 23: Call Control Configuration

    Chapter 3 - Software Installation and Configuration Call Control Configuration Persistent DTR Dialing _______________________ A high DTR (Data Terminal Ready) signal on the USB port indicates your computer or terminal is ready to communicate with your MTA128ST-USB. DTR normally goes high when a communication program starts or is ready to dial.

  • Page 24: Isdn Mta128St-Usb Configuration Utility

    MultiModemISDN User Guide ISDN MTA128ST-USB Configuration Utility Use the ISDN MTA128ST-USB Configuration Utility with computers running Windows 98/ 95 operating systems only. Because it is a software utility, you can use it to create and store as many different configurations as you wish. To Install in Windows 98/95 1.

  • Page 25: Windows 98/95 Dial-Up Networking

    Chapter 3 - Software Installation and Configuration Windows 98/95 Dial-Up Networking Windows 98/95 includes a remote-node client called Dial-Up Networking (DUN). To install and operate Dial-Up Networking 1. Insert the Windows 98/95 CD-ROM into the CD ROM drive. 2. In Windows 98/95, click Start | Settings | Control Panel | Add/Remove Programs. 3.
  • Page 26 MultiModemISDN User Guide MTA128ST-USB...

  • Page 27: Chapter 4 - At Commands, S-Registers And Result Codes

    Chapter 4 - AT Commands, S-Registers and Result Codes...

  • Page 28: Introduction

    MultiModemISDN User Guide Introduction One of the ways you can communicate with and configure your MTA128ST-USB is to use AT commands. AT commands are so-called because, with only a few exceptions, each command string begins with the characters AT. Using AT commands, you can read and set parameters, and perform actions such as dialing.

  • Page 29: At Commands By Function

    Chapter 4 - AT Commands, S-Registers and Result Codes AT Commands by Function Command Implementation Attention code Return Command execution +++AT<cr> In-band escape code <break>AT<cr> Out-of-band escape code Switch Configuration %A97 Dialing method Switch type Data SPID *!C6 Voice SPID SAPI-0 data TEI *!D3 SAPI-0 voice TEI...
  • Page 30 MultiModemISDN User Guide Data Call Commands Answer Dial Dial Stored telephone number &Jn Channel Bundling Hang up Display product information Return on-line @Config Start ConfigMenu Command Implementation Command: AT Function: Attention Code Values: Default: Description:The attention code precedes all command strings except the A/ command and escape codes.
  • Page 31 Chapter 4 - AT Commands, S-Registers and Result Codes Switch Configuration Commands Use the following commands to select your network switch type (e.g., EuroISDN Net3) and to specify other information required to make an ISDN connection. Command: %A97=n Function: Dialing Method Values: n = 0 or 1 Default:...
  • Page 32 MultiModemISDN User Guide Command: !D3=n Function: SAPI-0 Data TEI Values: n = 0–63, 240 (auto), 241 (disable) Default: !D3=240 (Auto TEI) Description:Use !D3= to set the terminal endpoint identifier (TEI) for the data channel. A TEI is a number used by the central office switch to identify uniquely each device connected to the network.
  • Page 33 Chapter 4 - AT Commands, S-Registers and Result Codes Command: !N1=n Function: Data DN/MSN 1 Values: n = 25 character string Default: null string Description:!N1 sets the Directory Number (DN)/Multiple Subscriber Number (MSN) for the data channel. The DN/MSN is a telephone number assigned to the TA at subscription time by the ISDN service provider.
  • Page 34 MultiModemISDN User Guide Command: !Z=n Function: Rate Adaption Protocol Values: n = 5, 6, 9, or 12 Default: !Z=9 (ML-PPP) Description:Selects rate adaption protocol used to communicate with another TA. The local and remote terminal adapters must be set to the same protocol for communication to take place.
  • Page 35 Chapter 4 - AT Commands, S-Registers and Result Codes Command: Sr=n Function: Set Register Value Values: r = S-register number; n varies Default: None Description:Use Sr=n to set value of an S-register, where r is the number of the S- register, and n is the value you want to set.
  • Page 36 MultiModemISDN User Guide Note that whereas the &F0 reset command always restores the factory default profile, the Z reset command restores either the factory default or the stored profile, depending on how the &W command is set. Command: &Cn Function: DCD Control Values: n = 0, 1, or 2...
  • Page 37 Chapter 4 - AT Commands, S-Registers and Result Codes Command: &En Function: Flow Control Values: n = 3–7, 12, 13 Default: &E4, &E6, &E13 Description:Selects method by which the TA controls the flow of data to and from the computer to prevent either device from accepting data faster than it can handle.
  • Page 38 MultiModemISDN User Guide Command: &Fn Function: Load Quick Setup Profile Values: n = 0–4 Default: &F0 Description:For quick setup, the TA includes six Quick Setup Profiles, each contains configuration parameters for a specific type of port operation. To load a Quick Setup Profile into active memory, use &Fn, where n is the profile number to load.
  • Page 39 Chapter 4 - AT Commands, S-Registers and Result Codes Command: &Wn Function: Store Active Profile Values: n = 0 or 1 Default: &W1 (Use factory default profile) Description:Stores your active profile, or configuration, in memory, so you won't lose custom settings when you turn off the TA or reset it. &W0 Stores all current AT command and S-register values in nonvolatile random access memory (NVRAM) and configures the TA so it reads...
  • Page 40 MultiModemISDN User Guide Command: $MBn Function: V.110 Network Rate Values: n = 600, 1200, 2400, 4800, 9600, 19200, 38400 Default: $MB38400 Description:If S77=1, then the network rate of the V.110 connection will match that of $MB (S76). If a V.110 call is received and S77=1, then the incoming V.110 network rate must match $MB (S76) or the connection will fail.

  • Page 41: Data Call Commands

    Chapter 4 - AT Commands, S-Registers and Result Codes Data Call Commands Use these commands to make or configure data calls. Command: A Function: Answer Call Values: none Default: none Description:Forces TA to answer an incoming call. To make the TA autoanswer, set register S0 to a value higher than 0.
  • Page 42 MultiModemISDN User Guide Command: @CONFIG Function: Start ConfigMenu Values: none Default: none Description:The @CONFIG command starts the TA’s internal configuration utility, used to customize the TA’s configuration for your application. You must enter the command while in your communication program’s terminal mode. MTA128ST-USB...

  • Page 43: S-Registers

    Chapter 4 - AT Commands, S-Registers and Result Codes S-Registers S-registers are sections of memory in which values are stored that affect how the MTA128ST- USB operates. S-registers are so-called because each has a name that begins with the character S.
  • Page 44 MultiModemISDN User Guide S-Register: S0 Function: Number of Rings Until Answer Unit: 1 ring Range: 0–255 Default: Description:Sets the number of rings the TA waits for before it answers and begins its connect sequence. S0=0 turns off the ability to automatically answer a call. S0=1 causes the TA to automatically answer after 1 ring.
  • Page 45 Chapter 4 - AT Commands, S-Registers and Result Codes S-Register: S7 Function: Wait for Connection (Abort Timer) Unit: 1 second Range: 0–255 Default: Description:Sets the Abort Timer delay time, which is the length of time the TA waits for a connection after dialing.
  • Page 46 MultiModemISDN User Guide S-register: S30 Function: On-line Inactivity Timer Unit: 1 minute Range: n=0 Does not disconnect n=1–255 Default: 0 (does not disconnect) Description:Makes the TA disconnect a data connection if no data is transmitted or received for the specified time. It will NOT cause a POTS call (voice/modem/ fax) to disconnect.
  • Page 47 Chapter 4 - AT Commands, S-Registers and Result Codes S-Register: S44 Function: POTS Port Ring Frequency Unit: Decimal ASCII code Range: 2–4 Default: 2 (25 Hz) Description:Controls the ring frequency from the POTS port. S44=n where: 25 Hz ring frequency 20 Hz ring frequency 16.67 Hz ring frequency S-register: S45...
  • Page 48 MultiModemISDN User Guide S-Register: S50 Function: Caller Line ID (CLI) Unit: Decimal ASCII code Range: 0 or 1 Default: 1 (enabled) Description:Sets whether the mechanism for identifying two endpoints of a connection is enabled or disabled. Since RING messages only appear for ISDN data calls, the CLI feature does not define a means of conveying Calling Party information to the terminal for ISDN voice calls.
  • Page 49 Chapter 4 - AT Commands, S-Registers and Result Codes S-Register: S53 Function: Maximum X.75 Buffer Size Unit: 1 byte Range: n=64 - 2048 Default: 2048 (bytes) Description:S53 allows the maximum buffer size of an X.75 frame to be customized. Typically a smaller frame size is more compatible with software packages on a PC (such as HyperTerminal).
  • Page 50 MultiModemISDN User Guide Telex National standard Private Default: 128 (disabled) Description:Modifies the value of Octet 3 of the Calling Party Number Information Element that is sent within the SETUP message for data and POTS port (voice/modem/fax) calls. To set a specific number type and numbering plan, select an option from the Type of Number section above and add its value to the value of an option in the Numbering Plan section above.
  • Page 51 Chapter 4 - AT Commands, S-Registers and Result Codes S-register: S58 Function: Client-side Authentication Protocol Negotiation Unit: Decimal ASCII code Range: PAP between TA and PC; CHAP MD5 between TA and server ANY authentication protocol Default: 1 (PAP) Description:Sets the client-side authentication protocol to be negotiated during the Link Control Protocol (LCP) phase of PPP/MLPPP negotiation.
  • Page 52 MultiModemISDN User Guide Note: Using the DBA scheme on the host-side requires that you specify a Data Directory Number or MSN. Refer to your TA Owner’s Manual for information on how to specify a Data Directory Number or MSN. S-register: S60 Function: Bandwidth-on-Demand (BOD) High Threshold Sampling Period...
  • Page 53 Chapter 4 - AT Commands, S-Registers and Result Codes S-register: S63 Function: Bandwidth-on-Demand Low Throughput Threshold Unit: Kbps Range: n=0–64 (Kbps) Default: 26 (26 Kbps) Description:Sets BOD Low Throughput Threshold, which determines whether second channel should be disconnected due to low throughput. Refer to the BOD description and how the Low Throughput Threshold (S63) and Low Threshold Sampling Period (S62) determine when second channel should be disconnected.
  • Page 54 MultiModemISDN User Guide S-register: S66 Function: Country Selections for POTS Ring Signal Unit: Decimal ASCII code Range: n=0–27 Default Custom single Custom dual Austria Belgium Cyprus Denmark Finland France Germany 1 Germany 2 Greece Iceland Ireland Italy Luxembourg 1 Luxembourg 2 Malta Netherlands Norway...
  • Page 55 Chapter 4 - AT Commands, S-Registers and Result Codes S-register: S68 Function: First Active Duration Unit: 1 ms Range: 5–9995 Default: 2000 ms Description:Sets the duration of the first active period of the ring signal. Any value given to this S-register is rounded down to the nearest 5 ms. For example, S68=1234 sets S68 to 1230 ms (1.23 seconds).
  • Page 56 MultiModemISDN User Guide complete. The PPP Magic-Number Block contains 5 Magic-Numbers in this implementation and is the default type. The Public Switched Network Directory Number option uses Data Directory Number 1 as the Endpoint Discriminator (if it is blank, then Endpoint Discriminator is blank). The Locally Assigned Address (S73=1), IP Address (S73=2), and IEEE 802.1 Globally Assigned MAC Address (S73=3) options currently generate a random value similar to the PPP Magic-Number Block, except that the length...

  • Page 57: Result Codes

    Chapter 4 - AT Commands, S-Registers and Result Codes Auto-synchronizing allows the TA to adapt to the client’s network rate without any need for the host to have its network rate predetermined. If S77=2 and a V.110 call is originated, then the network rate will be that of S76 ($MB). S-Register: S80 Function: Persistent DTR Dialing Delay...

  • Page 58: Using At Commands To Operate The Mta128St-Usb

    MultiModemISDN User Guide Using AT Commands to Operate the MTA128ST-USB You can configure and operate the MTA128ST-USB entirely with AT commands if you like. But remember, you can issue AT commands only from a terminal or from a computer running a communications program in terminal mode. This section describes how to use AT commands for basic operations, such as calling, answering a call, and hanging up.

  • Page 59: Channel Bundling Flag Dialing

    Chapter 4 - AT Commands, S-Registers and Result Codes Channel Bundling Flag Dialing The command AT&Jn is used to indicate whether outgoing calls should be made on two B-channels by default. The command AT&J1&W0<cr>, configures the TA to place a call, dialing on two B-channels by default.

  • Page 60: Answering A Call

    MultiModemISDN User Guide Answering a Call You can answer incoming calls to the TA either manually or automatically. When the TA detects an incoming call, it sends a RING result code to the computer or terminal after each ring. If autoanswer is enabled, the TA automatically answers the call. You can manually answer the call with the A command.

  • Page 61: Chapter 5 - Troubleshooting

    Chapter 5 - Troubleshooting...

  • Page 62: Introduction

    MultiModemISDN User Guide Introduction This chapter describes basic problems you may run into with your MTA128ST-USB and how to solve them. Your MTA128ST-USB was thoroughly tested at the factory before it was shipped. If you are unable to make a successful connection, or if you experience data loss during your connection, it is possible that the MTA128ST-USB is defective.
  • Page 63 Chapter 5 - Troubleshooting The MTA128ST-USB does not respond to commands • Make sure the MTA128ST-USB is plugged in and turned on. (See None of the LEDs Light When the MTA128ST-USB Is On.) • Try resetting your MTA128ST-USB by turning it off and on. •...
  • Page 64 MultiModemISDN User Guide • The MTA128ST-USB may be defective. If you have another Multi-Tech MTA128ST- USB, try swapping units. If the problem goes away, the first MTA128ST-USB is possibly defective. Call Tech Support for assistance (see Chapter 6). The MTA128ST-USB dials but cannot make a connection There may be several reasons the MTA128ST-USB fails to make a connection.
  • Page 65 Chapter 5 - Troubleshooting You cannot place two simultaneous data calls • You may not have ordered an ISDN line configuration that supports two simultaneous calls. Check your contract or latest statement of service from your ISDN provider. Also, your ISDN provider may have programmed the switch incorrectly. Call the provider.
  • Page 66 MultiModemISDN User Guide Data is being lost • USB cable is not plugged in. • Make sure the flow control method you selected in software matches the method selected in the MTA128ST-USB. Making a V.120 call, caller gets a NO CARRIER message after dialing the number Some switches don’t support ISDN SETUP messages that contain a LLC (low layer compatibility) element.
  • Page 67 Chapter 5 - Troubleshooting MTA128ST-USB receives garbage characters when connected to a 3Com Impact IQ terminal adapter Most likely, the Impact IQ has compression turned on. The compression used by the Impact IQ is incompatible with the compression used by the MTA128ST-USB. Disconnect the data connection and give the Impact IQ the command AT%CO and then establish the data connection again.
  • Page 68 MultiModemISDN User Guide MTA128ST-USB...

  • Page 69: Chapter 6 - Warranty, Service, And Technical Support

    Chapter 6 - Warranty, Service, and Technical Support...

  • Page 70: Introduction

    Customer to MTS’s factory transportation prepaid. MTS WILL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGES AND UNDER NO CIRCUMSTANCES WILL ITS LIABILITY EXCEED THE PURCHASE PRICE FOR DEFECTIVE PRODUCTS. On-line Warranty Registration To register your Multi-Tech product on-line, click this link: http://www.multitech.com/register MTA128ST-USB...

  • Page 71: Technical Support

    Chapter 6 - Warranty, Service, and Tech Support Technical Support Multi-Tech has an excellent staff of technical support personnel available to help you get the most out of your Multi-Tech product. If you have any questions about the operation of this unit, call Technical Support at (612) 717-5863.

  • Page 72: Downloading A File

    MultiModemISDN User Guide Downloading a File If you know the file name 1. From the Main Menu, enter F to access the Files Menu. Then enter D. 2. Enter the name of the file you want to download from the BBS. 3.

  • Page 73: Upgrading The Mta128St-Usb With Flashwizard

    Chapter 6 - Warranty, Service, and Tech Support Upgrading the MTA128ST-USB with FlashWizard The MTA128ST-USB has a flash PROM, which contains firmware code for the hardware. At various times, Multi-Tech may add enhancements and/or fixes to the firmware. The flash technology used in the MTA128ST-USB lets you load these upgrades into the PROM through the MTA128ST-USB’s USB port.

  • Page 74: Ordering Accessories

    MultiModemISDN User Guide Ordering Accessories SupplyNet, Inc. supplies replacement transformers, cables and connectors for select Multi-Tech products. You can place an order with SupplyNet via mail, phone, fax or the Internet at: Mail: SupplyNet, Inc. 614 Corporate Way Valley Cottage, NY 10989 Phone: 800 826-0279 Fax:...

  • Page 75: Appendixes

    Appendixes...

  • Page 76: Appendix A: Regulatory Compliance

    MTA128ST-USB User Guide Appendix A: Regulatory Compliance Class B Statement FCC Part 15 This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.

  • Page 77: Emc, Safety, And Terminal Directive Compliance

    Appendix B - Configuration Profiles EMC, Safety, and Terminal Directive Compliance The CE mark is affixed to this product to confirm compliance with the following European Community Directives: Council Directive 89/336/EEC of 3 May 1989 on the approximation of the laws of Member States relating to electromagnetic compatibility;...

  • Page 78: Appendix B: Configuration Profiles

    MTA128ST-USB User Guide Appendix B: Configuration Profiles Quick Setup Factory Profiles For quick setup, the MTA128ST-USB includes six Quick Setup Factory Profiles, each of which is configured for a specific type of port operation. You can load a Quick Setup Factory Profile into active memory by using the command &Fn, in which n is the number of the profile you wish to load.
  • Page 79 Appendix B - Configuration Profiles Profile 0 (&F0) — Modem-Like Asynchronous Operation AT COMMAND DESCRIPTION &C1 DCD functions normally Disable persistent DTR dialing &D1 Hang up when DTR drops Enable command mode echo &E4 Enable hardware flow control &E6 Discard XON/XOFF characters &E13 Enable pacing Disable Sending Multiple Xoff Characters...
  • Page 80 MTA128ST-USB User Guide Profile 1 (&F1) — V.110 Asynchronous Operation AT COMMAND DESCRIPTION &C1 DCD functions normally Disable persistent DTR dialing &D1 Hang up when DTR drops Enable command mode echo &E4 Enable hardware flow control &E6 Discard XON/XOFF characters &E13 Enable pacing Disable Sending Multiple Xoff Characters...
  • Page 81 Appendix B - Configuration Profiles Profile 2 (&F2) — V.120 Asynchronous Operation AT COMMAND DESCRIPTION &C1 DCD functions normally Disable persistent DTR dialing &D1 Hang up when DTR drops Enable command mode echo &E4 Enable hardware flow control &E6 Discard XON/XOFF characters &E13 Enable pacing Disable Sending Multiple Xoff Characters...
  • Page 82 MTA128ST-USB User Guide Profile 3 (&F3) — X.75 Asynchronous Operation AT COMMAND DESCRIPTION &C1 DCD functions normally Disable persistent DTR dialing &D1 Hang up when DTR drops Enable command mode echo &E4 Enable hardware flow control &E6 Discard XON/XOFF characters &E13 Enable pacing Disable Sending Multiple Xoff Characters...
  • Page 83 Appendix B - Configuration Profiles Profile 4 (&F4) — ML-PPP Asynchronous Operation AT COMMAND DESCRIPTION &C1 DCD functions normally Disable persistent DTR dialing &D1 Hang up when DTR drops Enable command mode echo &E4 Enable hardware flow control &E6 Discard XON/XOFF characters &E13 Enable pacing Disable Sending Multiple Xoff Characters...
  • Page 84 MTA128ST-USB User Guide MTA128ST-USB...

  • Page 85: Glossary

    Glossary...
  • Page 86 MultiModemISDN User Guide Symbol attenuation or distortion. Bandwidth is a factor in determining the amount of information and the speed at 2B1Q (2 bits, 1 quarternary)—A line code at layer one for which a medium can transmit data or other information. the BRI U interface.
  • Page 87 Glossary buffer—A temporary storage register or random access level of DCE that is most often located at a central office. memory (RAM), used in all aspects of data D-channel—A non-ransparent digital ISDN channel that communications, that prevents data from being lost due to operates at 16 K or 64 Kbps, used for call control differences in transmission speed.
  • Page 88 MultiModemISDN User Guide driver—A software module that interfaces between the function: A Universal Serial Bus device that provides a operating system and a specific hardware device (e.g., capability to the host. For example, an ISDN connection, a color monitors, printers, hard disks, etc.). Also known as a digital microphone, or speakers.
  • Page 89 Glossary IRQ (interrupt request)—The notification a processor whether a subaddress is included. If you assign a base receives when another portion of the computer’s hardware address and a subaddress, the unit only accepts calls that requires its attention. IRQs are numbered so that the match both the base address and the subaddress.
  • Page 90 MultiModemISDN User Guide Plug and Play (PnP): A technology for configuring I/O devices to use non-conflicting resources in a host. OHCI (OpenHCI): Open Host Controller Interface Resources managed by Plug and Play include I/O address Specification for USB. All transfers on the USB are ranges, memory address ranges, IRQs, and DMA initiated by the host system’s host controller.
  • Page 91 Glossary reference point—A connection point between ISDN supplementary services (SS)—ISDN functions beyond equipment classes (rather than the specific protocol of the the basic requirements; includes videoconferencing, fast interconnection). Can include R, S, T, and U reference dialing, call waiting, call forwarding, calling line ID. points.
  • Page 92 MultiModemISDN User Guide telecommunication service—A function, such as bearer spec defines two types of connectors to protect the bus service and teleservice, offered by an RPOA to its from illegal topologies (e.g., connecting one downstream customer in order to satisfy a specific telecommunications port back to another, etc.) and to prevent end-user requirement.
  • Page 93 Glossary V.110—One of the terminal rate adaptation protocols for the ISDN B-channel. V.110 is more hardware-intensive than the V.120 B-channel standard. V.120—One of the terminal rate adaptation protocols for the ISDN B-channel. V.120 is more software-intensive than the V.110 B-channel standard. Videotex—A two-way information-retrieval service that can be accessed by terminals and by a TV set (with installed decoder).
  • Page 94 MultiModemISDN User Guide MTA128ST-USB...

  • Page 95: Index

    Index Index Abort timer 45 Answering a call 41 Automatically 60 B-channel Manually 60 protocol 9 Assembling the modem 13 Backspace character 44 AT commands BBS (bulletin board system) 71 !C0= 22, 31 Break signal 30 !C6= 31 !D3= 32 !L 32 Cables !N1= 33...
  • Page 96 MultiModemISDN User Guide Compatibility Switch 9 Configuration 42 Echo commands 34 AT commands 21 Embedded Protocol Analyzer 32 Dial-Up Networking (DUN) 21 En bloc sending 31 Network configuration 21 Environmental conditions 9 Windows 98/95 21 Error correction 37 with ISDN TA Configuration utility 21 Escape character 30, 44 Configuration profiles Escape sequences 58...
  • Page 97 Index MSN (multiple subscriber number) 22, 33 MTA128ST-USB Accessories, ordering 74 Rate adaption protocol Assembling 13 AT command 34 AT Commands 25 Reference materials 16 Call control configuration 23 Regulatory compliance 76–93, 77 Configuration 21 Remote node operation 21, 25 Configuration profiles 78 Removing a modem from Windows 21 Connecting to your system 13...
  • Page 98 MultiModemISDN User Guide Receives garbage characters when connected to a 3C V.110 call, caller gets a NO CARRIER message 66 V.120 call, caller gets a NO CARRIER message 66 V.120 calls not accepted from a 3Com Impact IQ TA 66 Will not connect to an ELSA adapter with the V.120 67 Uninstalling an MTA128ST-USB from Windows 21 Unpacking the MTA128ST-USB 12...

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