Multi-Tech Systems MT5634ZPX-PCI-V92 manual Introduction

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MultiModemZPX User Guide

4 AT Commands, S-Registers, and Result Codes

Introduction

AT commands are used to control the operation of your modem. They are so called because each command must be preceded by the characters AT to get the ATtention of the modem.

AT commands can be issued only when the modem is in command mode or online command mode. The modem is in command mode whenever it is not connected to another modem. The modem is in data mode whenever it is connected to another mo- dem and ready to exchange data. Online command mode is a temporary state in which you can issue commands to the modem while connected to another modem. To put the modem into online command mode from data mode, you must issue an escape sequence (+++) followed immediately by the AT characters and the command, e.g.,

+++ATH to hang up the modem. To return to data mode from online command mode, you must issue the command ATO.

To send AT commands to the modem you must use a communications program, such as HyperTerminal or the PhoneTools communications program included with your modem. You can issue commands to the modem either directly, by typing them in the terminal window of the communications program, or indirectly, by con- figuring the operating system or communications program to send the commands automatically. Fortunately, communications programs make daily operation of mo- dems effortless by hiding the commands from the user. Most users, therefore, need to use AT commands only when reconfiguring the modem; for example, to turn au- toanswer on or off.

The format for entering an AT command is ATXn, where X is the command and n is the value for the command, sometimes called the command parameter. The value is always a number. If the value is zero, you can omit it from the command; thus, AT&W is equivalent to AT&W0. Most commands have a default value, which is the value that is set at the factory. The default values are shown in the “AT Commands” section, which begins on the next page.

You must press the ENTER key (abbreviated <CR>, for carriage return) to send the command to the modem. Any time the modem receives a command, it sends a re- sponse known as a result code. The most common result codes are OK, ERROR, and the CONNECT messages that the modem sends to the computer when it is connect- ing to another modem. For a table of valid result codes, see “Result Codes” at the end of this chapter.

You can issue several commands in one line, in what is called a command string. The command string begins with AT and ends when you press ENTER. Spaces to separate the commands are optional; they are ignored by the command interpreter. The most familiar command string is the initialization string, which is used to configure the modem when it is turned on or reset, or when your communications software calls another modem.

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Contents Page Record of Revisions Introduction Solving Problems Appendix G Installing Under SCO OpenServer Introduction What Is in Your Modem Package? IntroductionProduct Description Installation You supply Safety WarningsWhat You Will Need We supplyInstall the MultiModemZPX in your Computer Make the External Connections Line ConnectionPhone Connection Sound Card and Speaker Connections Microphone ConnectionInstall the Modem Driver WindowsWindows 98/Me Changing the Windows 95/98/Me COM port assignment Verifying the Windows 95/98/Me Configuration Windows NT If Dial-Up Networking is not installedIf Dial-Up Networking is already installed Verifying the Windows NT Configuration Viewing system resources Configure the Modem for Your Country AT CommandsGlobal Wizard Utility Install and Configure Your Software Operation Configuring the Modem PhoneTools FeaturesConnecting to the Internet Sending a Fax Dial-Up NetworkingReferences AT Commands Registers Result Codes Introduction Answer AT CommandsRepeat Last Command Communication Standard SettingHook Control Echo Command Mode CharactersDS=n Dial Stored Telephone Number Echo Online Data CharactersModulation Handshake Monitor Speaker ModeReturn Online to Data Mode Result Codes Enable/DisableResult Code Options Modem ResetTone Dialing Result Code FormatXON/XOFF Pacing Control Load Factory SettingsAsynchronous Communications Mode Data Terminal Ready DTR ControlStore Dialing Command Test CommandsDisplay Current Settings Store Current Configuration\Bn Transmit Break \Jn Data Buffer Control\Kn Break Control \V n Protocol Result Code \Nn Error Correction Mode Selection\Tn Inactivity Timer \Qn Flow Control Selection42bis Compression Control Adaptive Answer Result Code EnableData Calling Tone View Numbers in BlacklistCommand +DCS=x,y Select V.44 Data Compression Command +DS44=n V.44 Data CompressionData Compression Reporting Subparameters Enable Synchronous Buffered ModeMod Modulation SelectionCommand +PCW= n Call Waiting Enable Modem Hook Flash Modem on Hold EnableCommand +PMHR=n Modem on Hold Initiate PCM Upstream IgnoreQuick Connect Control Command +PMHT=n Modem on Hold Timer#S=x Store Setup Password Command +VCID=n Caller ID SelectionCommand +VDR=x, y Distinctive Ring Report #Sx Enter Setup PasswordCommand %%%ATCR Remote Configuration Escape Sequence Command +++ATCR Escape SequenceRegisters Register Unit Range Default DescriptionValue Rate Value SpeedValue Digital loss Bit 56K modeTerse Verbose Description Result CodesDelayed Remote Configuration Basic Procedure SetupTo Change the Setup Password To Change the Remote Escape Character Solving Problems Modem Does Not Respond to Commands Modem Cannot Connect When Dialing ModemDisconnects While Online MultiModemZPX User Guide Voice Functions Don’t Work There Are Garbage Characters on the MonitorModem Doesn’t Work with Caller ID Fax and DataSoftware Can’t Run at the Same TimeVoice Mail Test Loopback TestSpeakerphone Test Appendixes FCC Part 68 Telecom Appendix a Regulatory ComplianceFax Branding Statement FCC PartCanadian Limitations Notice Industry CanadaProtection Against Contact with TNV Circuit New Zealand Telecom Warning Notice EMC, Safety, and R&TTE Directive ComplianceInternational Modem Restrictions South African NoticeAppendix B Technical Specifications Command Buffer Local Analog Loopback Test V.54 Loop Test procedureFigure C-2. Remote digital loopback test Remote Digital Loopback Test V.54 LoopFigure C-3. Local digital loopback test Local Digital Loopback Test V.54 LoopMultiModemZPX User Guide Loopback Tests Limited Warranty Online Warranty Registration ServiceCanadian Customers International Distributors International Customers outside U.S.A. and CanadaInternet Sites Technical SupportIdentify the Modem Firmware Upgrade OverviewDocument and Clear Your Stored Paramenters Download the Upgrade FileExtract the Upgrade Files Identify the Current Firmware VersionRestore Your Parameters Upgrade the Modem’s FirmwareInstallation Standard Linux Serial Port DefinitionsPC port Linux port Using the Modem to Call the Internet Using the Terminal Program Minicom to Verify OperationAnswering Calls Calling the ISPAppendix G Installing Under SCO OpenServer Index MultiModemZPX User Guide Index MultiModemZPX User Guide Index MultiModemZPX User Guide Index

MT5634ZPX-PCI-V92 specifications

The Multi-Tech Systems MT5634ZPX-PCI-V92 is a high-performance V.92 data/fax modem designed to enhance communication capabilities in various applications. This modem is particularly well-suited for commercial and industrial environments where reliable connectivity is crucial.

One of the standout features of the MT5634ZPX-PCI-V92 is its support for the V.92 protocol, which allows for quicker uploads and improved connection speeds compared to earlier standards. It offers download speeds of up to 56 Kbps and upload speeds of up to 48 Kbps, making it an excellent choice for businesses that rely on time-sensitive data transmission. The modem's ability to maintain reliable connections even over noisy telephone lines is a critical aspect of its design, ensuring that users can depend on it for essential communications.

The MT5634ZPX-PCI-V92 also includes advanced error correction and data compression technologies, such as MNP 4 and V.42bis. These technologies work together to ensure data integrity during transfers and to maximize throughput, enabling users to send larger files without compromising quality or speed. Additionally, the modem features a robust fax capability, supporting both analog and digital fax transmissions, which is vital for businesses that frequently deal with document sharing.

A notable characteristic of the MT5634ZPX-PCI-V92 modem is its PCI interface, which allows for easy integration into desktop systems. This plug-and-play capability simplifies installation and setup, making it accessible for users with varying levels of technical expertise. The modem is built on a reliable hardware platform, characterized by its durable components, making it ideal for environments where long-term use is expected.

Moreover, the MT5634ZPX-PCI-V92 comes with comprehensive driver support for various operating systems, including Windows and Linux, ensuring compatibility with a wide range of applications. With its combination of speed, reliability, and ease of use, the Multi-Tech Systems MT5634ZPX-PCI-V92 modem remains a popular option for businesses looking to maintain effective communication channels through dial-up connectivity. Whether for data transmission or faxing, it stands as a solid choice for organizations that require dependable performance in a compact form factor.
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