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Analog Modems

Affordable Internet Connections to Advance Your Business

Advance your technology without having to redesign your equipment. Analog modems are a cost-effective way to add Internet access to equipment that doesn’t require, or doesn’t support, wireless connectivity.

MultiTech analog data modems connect legacy equipment to the IP network easily and affordably with PSTN connectivity via serial, USB or PCI-type (e.g., UPCI- or PCIE-bus) devices. External modems are available for synchronous and asynchronous equipment, and support dial-up, 2- or 4-wire leased line service.

All analog modems are certified and carrier approved in more than 50 countries to get your M2M solutions to market fast and deployed globally. 

Visit our Global Modems page.

Now may be the time to review your connectivity roadmap and transition strategy.
Analog data line costs continue to rise and line quality has been declining. MultiTech offers a broad portfolio of embedded analog modems and devices that provide a seamless migration to all major Cellular, Low-Power Wide Area & Personal Area Networks. Learn more.


MultiModem® ZBA

MultiModem® ZBA (MT9234ZBA Series) provides high speed data/fax capabilities, remote configuration for centralized set up and management, call back security. Globally approved for worldwide business.

  • Supports out of band management and increased upload speeds

  • Reduces fax transmission time by more than half compared to traditional fax modems

  • Offers centralized setup and management

MultiModem® ZDX

Get the highest-speed dial-up for integrated voice, data and fax communications for the PC market and UNIX, medical and retail point of sale (POS) applications. (MT5656ZDX Series) Learn more.

  • Access the Internet at the fastest dial-up speeds

  • Improves data throughput rates

  • Small footprint and stackable design

MultiMobileTM USB

The MultiMobileTM USB (MT9234MU Series), a globally approved analog modem provides laptop connectivity and mission-critical out-of-band remote servicing, fax and data applications.

  • High-speed dial-up remote serving, fax and data applications

  • Offers a cost-effective option for worldwide deployment

MultiModem® ISI

MultiModem® ISI (ISI Series) multiport analog modem card provides dial-up remote access or dedicated fax solutions with Universal PCI and PCI Express.

  • Supports remote access and fax software

  • Reduces fax transmission time by more than half compared to traditional fax modems

  • Provides wide area network connectivity to and from locally connected Bluetooth devices

MultiModem® ZPX

The MultiModem® ZPX internal modems (MTxxxxZPX Series) provide analog connectivity to traditional POTS PSTN service.

  • Send updates or troubleshoot quicker

  • Improves data throughput rates

  • Out-of-the-box deployment worldwide/ Wide-scale deployment


SocketModem® (MTxxxx-SMI Series) embedded analog modem integrates data/fax at high speed over a standard telephone line. Small size allows OEMs to integrate in any product platform.

  • High-speed data over standard phone line

  • Easy integration and migration to future networks

SocketModem® IP

SocketModem® IP (MTxxxxSMI-IP Series) intelligent modem creates Internet-ready devices. Universal IP enables web connectivity without PC or gateway server connections.

  • Easy integration and migration to future networks

  • Enhanced M2M functionality, including automatic/persistent connectivity

  • Send and receive data over the Internet without a PC or gateway server connection


The SocketSLIC® (MTIFM Series) telephony module is a ready-to-integrate isolated and programmable analog-to-PCM interface that converts an analog interface to a digital signal.

  • Can be programmed to support unique interfaces per specific customer instillation requirements

  • Relieves the burden and expense of designing an analog interface

  • Allows designer to focus on digital design