USRobotics Courier Lite 56K Business Modem

USRobotics USR5686G-PRO

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Courier Model 5686G-PRO

Manufacturer Part#  USR5686G-PRO

UPC Code: 738168041817

Provantage Code:  USB9013

Condition:  Factory New

  • Product Type: Data/Fax Modem
  • Limited Warranty: 2 Year
  • Host Interface: Serial
  • TAA Compliant: No

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USRobotics USR5686G-PRO Specifications

    Courier Lite 56K Business Modem

At a Glance

    • Server and 64 bit, UNIX, Linux - any operating system that supports an RS-232 serial port
    • Dialback security checks incoming calls for password authorization and then dials back predefined numbers to assure only appropriate users establish connections
    • Carrier Loss Redial automatically senses, redials, and re-establishes dropped remote connections - creates a virtual always-on connection between two modems over standard analog dial-up lines
    • Advanced Line Probing technology finds the fastest connection and maintains connections under poor line conditions
    • Brown-out Protection assures you stay connected even in areas with poor power facilities
    • Robust, business-oriented design, component selection, testing, and experience to support non-stop operation
    • Remote access and management lets you configure or troubleshoot from almost anywhere
    • Use as a secondary connection to troubleshoot, reconfigure, and reboot network devices through a console port.
    • External 8 position DIP switch allows manual configuration of specific critical settings
    • Extra LEDs for better monitoring of serial signals
    • Precise manual volume control
    • Permanently store preferred modem default settings



    The USR® Courier® Lite 56K* Business Modem with V.Everything® technology provides secure, reliable analog connections. Many modems claim reliability, but even fewer offer the multitude of advanced business features like Courier's Carrier Loss Redial, Dialback Security, and Remote Access capabilities. Point of Sale, M2M (Machine to Machine), IoT (Internet of Things) applications as well as Out of Band Management and Remote Management deployments utilize remote access to configure or troubleshoot. With over 1 million units sold world-wide, the Courier family of modems real-world performance is unmatched. When failure is not an option, you need the world-class capabilities that only come from the top of the USR product line.

Package Contents

    • Courier Lite 56k Dial Up Business Modem
    • Power Supply Unit
    • RJ-11 Phone Cord (7 ft/2.13 m)
    • DB9 to DB25 RS-232 Serial Cable (3 ft/0.91 m)

Additional Product Images


Product NameCourier Lite 56K Business Modem
Manufacturer Part NumberUSR5686G-PRO
Product TypeData/Fax Modem
Number of Phone Line (RJ-11) Ports2
Modem Transmission Data Rate56 kbit/s
ModulationITU-T V.92

ITU-T V.90

ITU-T V.34

ITU-T V.32bis

ITU-T V.32

ITU-T V.23

ITU-T V.22bis

ITU-T V.22

ITU-T V.21

ITU-T V.44

ITU-T V.42bis

ITU-T V.80

ITU-T V.42

ITU-T V.34plus

Host InterfaceSerial
Environmentally FriendlyYes
Fax Transmission Data Rate14.4 kbit/s
Country of OriginChina
Product Model5686G-PRO
Product LineCourier
Fax TechnologyITU V.17

ITU-T V.29

ITU-T V.27ter

ITU-T V.21

EIA 578 Class 1

EIA 592 Class 2.0


Limited Warranty2 Year
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