Multitech MT5600ZDXV manual Modem Does Not Respond to Commands

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Models MT5600ZDX & ZDXV

The Modem Does Not Respond to Commands

4Make sure the modem is plugged in and turned on. (See “None of the LEDs Light When the Modem Is On.”)

4Make sure you are issuing the modem commands from the data communications software, either manually in terminal mode or automatically once you have configured the software. (You cannot send commands to the modem from the DOS prompt.)

4Make sure you are in terminal mode in your data communications program, then type AT and press ENTER. If you get an OK response, your connections are good and the problem likely is in your phonebook entry or session settings. Be sure your modem is not in data mode when you type a command. Use the escape character sequence to switch to terminal mode. The default escape sequence must wait at least one second, enter +++, and pause another second or more before entering a command.

4The E0 and Q1 commands may be in effect, disabling echo and responses. Verify this with the &V command. To enable echo and responses, enter ATE1Q0<cr>.

4Try resetting your modem by turning it off and on. Make sure there is a reset command (&F) in your initialization string, or your modem may not initialize correctly.

4If you don’t get an OK, the problem may still be in the communications software. Make sure you have done whatever is necessary in your software to make a port connection. Not all communications programs connect to the COM port automat- ically. Some connect when the software loads and remain connected until the program terminates. Others can disconnect without exiting the program. Many communications software packages also allow multiple terminals to be open, but only one can access the modem at a time. If your package reports that it cannot make a connection, yet the modem’s TR indicator is on, click on the Window menu to see if more than one terminal is open. The modem’s TR indicator shows that the software has made a connection with the modem through the COM port.

4Your communications software settings may not match the physical port the modem is connected to. The serial cable may be plugged into the wrong connector—check your computer documentation to make sure. Or, you may have selected a COM port in your software other than the one the modem is physically connected to—compare the settings in your software to the physical connection.

4If the modem is on, the cable is plugged into the correct port, the communications software is configured correctly, and you still don’t get an OK, the fault may be in the serial cable. Make sure it is firmly connected at both ends.

4Is this the first time you have used the cable? If so, it may not be correct. Check the cable description on the packaging to make sure the cable is the right one for your computer.

4Peripheral expansion cards, such as bus mouse and sound cards, may include a serial port preconfigured as COM1 or COM2. The extra serial port, or the card

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Contents Page Models MT5600ZDX & Zdxv User Guide Chapter Chapter Page Introduction Introduction Product Description Data What Is in Your Modem Package? FaxVoice Zdxv only Software Considerations for ZdxvAT Commands, S-Registers & Result Codes How to Use This ManualInstallation TroubleshootingInstallation Computer Serial CableCommunications Software Safety Warning TelecomTelephone Line Assemble the ModemInstallation Process Phone LineUser Guide Sound Card Considerations Zdxv only 2a. Modem ConnectionsSoundCard Connections Zdxv only LED Indicators Modem Front PanelUser Guide Is Your Modem Ready for Use? Operating Your ModemSoftware Configuration Simple OperationsModem Initialization Setup Hardware/Software ConfirmationNone of the LEDs Light When the Modem Is On Modem Does Not Respond to Commands Modem Dials But Cannot Make a Connection Models MT5600ZDX & Zdxv Modem Disconnects While Online Modem Cannot Connect When Answering Slow File TransferLosing Data Garbage Characters on the MonitorPage AT Commands Registers Result Codes AT Commands Command Ds Dial Zdxv only Command Hn On-Hook/Off-Hook Control Command DS=n Dial Stored Telephone NumberCommand En Echo Command Mode Characters Command Information RequestCommand On Return Online to Data Mode Command Mn Monitor Speaker ModeCommand Nn Modulation Handshake Command Qn Enable/Disable Result CodesCommand Wn Connect Message Control Command Sn Read/Write Register ValueCommand Vn Terse/Verbose Result Code Format Command Zn Modem Reset Command Xn Result Code SelectionCommand Yn Long Space Disconnect Command &Cn Data Carrier Detect DCD ControlCommand &Dn Data Terminal Ready DTR Control Command &Fn Load Factory Default SettingsCommand &Kn Flow Control Selection Command &Gn 22bis Guard Tone ControlCommand &Jn Telephone Jack Control Command &Ln Leased Line OperationCommand Data Set Ready DSR Control Command &Mn Communications ModeCommand Asynchronous Communications Mode Command $SBn Serial Baud RateCommand &V0 View Current Configuration Command V1 Display Last Connection StatisticsCommand %L Line Signal Level Command &Wn Store Current ConfigurationCommand &Zn=x Store Telephone Number Command %Q Line Signal QualityCommand %C Enable/Disable Data Compression Command %7 Plug and Play Serial NumberCommand %8 Plug and Play Vendor ID and Product Number Command \An Select Maximum Block SizeCommand \Bn Transmit Break to Remote Command \Kn Set Break ControlCommand \Nn Error Correction Mode Selection Command \Vn Single Line Connect Message+MS=mod,automode,minrate,maxrate,xlaw ,rbsignallingcr Command +MS Select ModulationCommand SDR=n Enable/Disable Distinctive Ring Command MnCommand -Qn MNP 10 Enable Fallback to V.22 bis/V.22 Command *Hn MNP 10 Link Negotiation SpeedCommand -Kn MNP 10 MNP Extended Services Command SEC=n Enable/Disable MNP10-ECCommand *D View Delayed Numbers Command En MNP 10 Compromise Equalizer Enable CommandCommand *B View Numbers in Blacklist Command T Tone Dial Command #CID Caller IDCommand P Pulse Dial Command +++ Escape SequenceRegister Unit Range Default Description RegistersS12 S10S11 S18S24 S30 S25S29 S32S37 Bit-Mapped Options Status Register Unit Range Default Description S38 Register Unit Range Default Description S46 S48S82 Break Handling Options S91S92 S95 Extended Result CodesVerbose Description Result CodesResult Codes Delayed Connect Troubleshooting Local Analog Loopback Test/V.54 Loop Local Analog Loopback TestDigital Loopback Test/V.54 Loop 2 Local/Manual Digital Loopback Test/V.54 Loop 2 Remote/ Automatic Digital Loopback Test Local/manualDigital Loopback Test remote/automatic Page Warranty Service Tech Support Limited Warranty Online Warranty RegistrationRecording Modem Information ServiceTech Support Phone About Ordering AccessoriesMail FaxIf you know the file name About the Multi-Tech BBSLogging on to the Multi-Tech BBS Leaving a Message If you don’t know the file nameReading a Message Bulletins Using Flash to Upgrade Modem FirmwareFlash Procedure Models MT5600ZDX & Zdxv About Internet Tech Support Page Technical Specifications Data Command Buffer 40 charactersCarrier Frequencies 1800 Hz Carrier Frequencies Transmit OriginateBell Standard 22bis/V.22 or300 bps Carrier Frequencies Fax 21 CH2Temperature Power Requirement Connectors DiagnosticsIndicators Power ConsumptionRegulatory Information Models MT5600ZDX & Zdxv User Guide FCC Fax Update Canadian Limitations NoticeUser Guide International Modem Restrictions Compliance with Babt RequirementsUser Guide Compliance with BS6789 .1 and Part Modem CE Mark EMC and Safety Compliance Compliance with BS6328 PartCommission Decision CTR21 & European Directive Notice New Zealand Telecom Warning NoticeInformation Appendix C V.90 Information SupportUser Guide Models MT5600ZDX & Zdxv

MT5600ZDXV, MT5600ZDX specifications

The MultiTech MT5600ZDX and MT5600ZDXV are state-of-the-art modems designed to offer reliable communication capabilities for a variety of applications. These devices are particularly favored in industrial, telecommunications, and enterprise settings due to their robust performance and versatility.

One of the standout features of the MT5600ZDX series is its ability to support both analog and digital signaling. This dual compatibility enables seamless integration with existing telecommunication infrastructure, making it an ideal choice for businesses looking to upgrade without overhauling their entire system. With ITU-T V.34 modem technology, these devices support high-speed data transmission rates of up to 56 kbps, ensuring quick and efficient data transfer.

The MT5600ZDX and MT5600ZDXV models come equipped with a comprehensive array of communication protocols, including PPP, TCP/IP, and the unique Multitech proprietary protocols. This broad compatibility allows for easy connection to various networks and devices, facilitating smooth data exchange across platforms.

Another notable feature is the built-in error correction and data compression capabilities. With technologies such as MNP, V.42, and V.42bis, users can expect enhanced data integrity and faster transmission speeds, which are particularly crucial in environments with high noise levels or signal interference. These features make the modems highly effective for remote monitoring applications, telemetry, and point-of-sale terminals.

Additionally, both models excel in terms of connectivity options. The MT5600ZDX includes a standard RS-232 interface, while the MT5600ZDXV offers an enhanced V.24 interface for those requiring additional communication flexibility. This variety in connectivity options ensures that users can integrate these devices into a wide range of systems, whether for industrial automation or remote data acquisition.

Durability and reliability are also core characteristics of the MT5600ZDX series. Designed to operate in challenging environments, they boast a wide operating temperature range and robust casing, making them suitable for deployment in harsh industrial conditions.

In conclusion, the MultiTech MT5600ZDX and MT5600ZDXV modems provide a feature-rich solution for organizations seeking high-performance communication. With advanced technologies, exceptional versatility in connections, and reliability in demanding settings, they continue to stand out as preferred choices for efficient industrial communication solutions. These devices not only enhance operational efficiency but also pave the way for future-proof connectivity in an increasingly digital world.
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