Multi-Tech MT5656ZDX MultiModemZDX V.92 Data/Fax Modem
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Product Information for Multi-Tech MT5656ZDX MultiModemZDX V.92 Data/Fax Modem

Highlights for Multi-Tech MT5656ZDX MultiModemZDX V.92 Data/Fax Modem

  • Form Factor:External
  • Modem Speed:56Kbps
  • Modulation:ITU-T V.92
  • Bus Type:Serial

Marketing Information

The Multi-Tech MT5656ZDX modems are compatible with the ITU-TV.92 protocol that provide quickconnections, downstream transmissions at speeds up to 56K bps, and upstream transmissions at speeds up to 48K bpswhen connected to V.92-compatible Internet Service Providers.

General Information

  • Manufacturer: Multi-Tech Systems, Inc
  • Manufacturer Part Number: MT5656ZDX
  • Manufacturer Website Address:
  • Product Line: MultiModem ZDX
  • Product Name: MT5656ZDX MultiModemZDX V.92 Data/Fax Modem
  • Product Type: Data/Fax Modem
  • Brand Name: Multi-Tech
  • Technical Information

  • Fax Technology: Super G3
  • Command Set: AT Command Set
  • Flow Control: Hardware CTS/RTS
  • Tone Progress Detection: DTMF
  • Modem Features: Quick Connect
  • Modulation: ITU-T V.92
  • Data Compression: ITU-T V.44
  • Error Correction: MNP-4
  • Video Support: ITU-T V.80
  • Interfaces/Ports

  • Host Interface: Serial
  • Interfaces/Ports: 2 x RJ-11
  • Bus Type: Serial
  • Power Description

  • Input Current: 150 mA @9V DC
  • Environmental Conditions

  • Temperature: 0 C (32 F) to 50 C (122 F)
  • Humidity: 20 to 90% Non-condensing
  • Miscellaneous

    Additional Information

  • Command Buffer: 40 Characters
  • Transmission Level: -11 dBm (North America and Pan Euro) - varies by country setting
  • Frequency Stability: 0.01%
  • Receiver Sensitivity: -43 dBm under worst-case conditions
  • AGC Dynamic Range: 43 dB
  • Data Format: Serial, binary, asynchronous
  • Voice Mode Sampling: Up to 44.100 KHz (down-sampled to 11.025KHz)

    Package Contents

  • MT5656ZDX MultiModemZDX V.92 Data/Fax Modem
  • A DC power transformer
  • One RJ11 phone cable
  • A printed Quick Start Guide
  • A CD containing modem drivers, communications software (PhoneTools), this User Guide, AT Commands Reference
  • Guide which includes voice commands, a Fax 1 Commands Reference Guide, and Adobe Acrobat software
  • Four vinyl gripper feet for the bottom of the modem

    Software Included

  • Multi-language data/fax software for Windows


  • Windows 95
  • Windows 98
  • Windows NT
  • Windows 2000
  • Linux (2.2.x kernal)

    Platform Support


    System Requirements

  • The processor speed should be at least 75 MHz in order to take full advantage of the ZDX-V's telephony features
  • A shielded RS232 serial cable with a male DB-25 connector on one end and a connector to match your computer'sserial port on the other end

    Certifications & Standards

  • FCC Part 15 Class B
  • FCC Part 68 Telecom
  • EMC, Safety, and R&TTE Directive
  • CE
  • 89/336/EEC
  • 73/23/EEC
  • 1999/5/EC
  • UL-CUL

    Physical Characteristics

  • Form Factor: External
  • Dimensions: 1.15" Height x 5.8" Width x 4.25" Depth
  • Weight: 8 oz
  • Warranty

  • Standard Warranty: 10 Year Limited
  • Media & Performance

  • Modem/Fax Data Rate: 19.2Kbps Data
  • Modem Speed: 56Kbps
  • Controls/Indicators

  • Status Indicators:
  • Transmit Data:
    • Flashes when the modem is transmitting data to another modem
  • Receive Data:
    • Flashes when the modem is receiving data from another modem
  • Carrier Detect:
    • Lights when the modem detects a valid carrier signal from another modem
    • It is on when the modem is communicating with the other modem, and off when the link is broken
  • Off-Hook:
    • Lights when the modem is off-hook, which occurs when the modem is dialing, online, or answering a call
    • The LED flashes when the modem pulse-dials
  • Terminal Ready:
    • Lights when a communication program is using the modem
  • PWR:
    • When you turn on the modem, the PWR indicator lights