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Courier® External 56K* V.92 Global Dial-up Business Modem

Mission critical dial-up connectivity for Business


Mission critical dial-up connectivity for Business

The USRobotics® Courier® 56K Business Modem with V.Everything® and V.Everywhere® technology offers the perfect solution for both Out of Band Management of networks or Point of Sale applications. Many modems claim reliability, but few match the real-world performance of Courier modems. Even fewer offer the multitude of advanced business features found on this modem: global usage, Carrier Loss Redial, and Dial and Dialback Security. Remote management capabilities let you configure, set up, update or troubleshoot your modems from almost anywhere. Each Courier includes a VersaPower Kit - a 110V to 240V power supply that includes clip-on plugs for other regions, in addition a clip-on power cord adapter that can be used to make it an inline power supply is available in all Courier accessory kits. When failure is not an option, you need the world-class capabilities that only come from the top of the USRobotics product line.


Incredible Compatibility and Flexibility

  • V.Everything® Technology provides support for all key communications protocols
  • V.Everywhere® Technology so that one, highly reliable hardware platform supports connections with most international phone systems
  • Synchronous/Asynchronous, and leased-line support
  • Supports all major operating systems: DOS, Windows including Server and 64 bit, UNIX, Linux — any operating system that supports an RS-232 serial port
  • VersaPower Kit (Universal power adapter) automatically handles global power variations from 100 V to 240 V and includes alternate plugs for use in other regions (N.A., Europe, the Middle East or Africa)

Integrated Multilayered Security

  • Dial security:
    • Autopass works with up to 79 users, and automates logging in between two Couriers by including the password in the V.42 error-control request
    • Password Prompting, works with any type of modem, where the host Courier requests a password from those dialing in
  • Dialback security checks incoming calls for password authorization and then dials back predefined numbers to assure only appropriate users establish connections

Rock-solid Reliability

  • Carrier Loss Redial automatically senses, redials, and re-establishes dropped remote connections — creates a virtual leased-line connection between two modems, over regular 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

Powerful Management Tools

  • Remote Management lets you configure or troubleshoot from almost anywhere
  • Instant Update automatically checks the USRobotics web site for code updates when you're online and downloads new features at your convenience
  • Remote Flash capability lets you upgrade Courier modems at remote locations from a central site

Modem Specifications

Specifications & Standards

  • ITU V.92/V.90 up to 56 Kbps downloads
  • Data: V.92, V.90, V.34, V.32bis, V.32, V.22bis, V.22, V.23, and V.21
  • ITU V.34 at 33.6 Kbps or 28.8 Kbps
  • V.32 at 19.2 Kbps (21.6 Kbps between Courier modems with ASL)
  • ITU V.32bis at 14.4 Kbps
  • HST at 16.8 Kbps
  • Compatible with most ITU and Bell standards down to 300 bps
  • Data Error Control; Compression: V.42/V.42bis and MNP2-4/5
  • Fax: ITU V.17 at 14.4 Kbps, ITU V.29 at 9600 bps, ITU V.27ter at 7200 bps, Group III, TIA/EIA 578 Class 1, and TIA/EIA 592 Class 2.0
  • Caller ID and distinctive ring (require service from your local phone company/Caller ID may not be supported in some countries)
  • Hayes Compatible


  • Temperature: Operating Temperature conditions: 0 to 50 degrees C, Non-Operating Temperature conditions: -20 to 70 degrees C
  • Humidity: Operating Humidity conditions: 20% to 80% non-condensing, Non-Operating Humidity conditions: 5% to 95% non-condensing


  • FCC approved (Part 15/Part 68)
  • IC approved (ICES-003/CS-03)
  • UL/CUL listed
  • CE approved (Class B)
  • ROHS Compliant
  • REACH Compliant

Package Dimensions/Weight

  • 11.25 x 4.5 x 7.0 in. (28.58 x 11.43 x 17.78 cm)
  • 3.4 lb (1.54 kg)

Product Dimensions/Weight

  • 5.1 x 10.2 x 1.2 in. (13 x 26 x 3 cm)
  • 1.1 lb (0.5 kg)

Minimum Systems Requirements


  • Supports all major operating systems: DOS, Windows 3.1/95/98/Me/NT 4.0/2000/2003/2003 64 bit/XP/XP 64 bit/Vista/Vista 64 bit/Server 2008/Win 7/Win 7 64 bit/Win 8/Win 8 64 bit/Server 2011/Server 2012/Win 10/Win 10 64 bit/Server 2012 R2 (Unimodem TSP/TAPI compliant), UNIX, Linux, and any operating system that supports an RS-232 serial port
  • Available RS-232 serial port
  • 56K compatible local analog phone line

Software (ICN/Instant Update)

  • IBM compatible PC with 486DX or Pentium processor or equivalent
  • Internet Call Notification (ICN) supports Windows 95/98/Me/2000/XP


  • V.90 requires a V.90 56K ITU standard capable service provider
  • V.92 requires a V.92 56K ITU standard capable service provider
  • V.92 Call Notification feature requires Call Waiting service from your local phone company
  • V.92 Call Identification feature requires Call Waiting/Caller ID services from your local phone company

Package Contents

  • USRobotics Courier 56K Business Modem
  • VersaPower Kit (Universal power adapter 100 V — 240 V) with UK, European, China and US plugs
  • RJ-11 phone cord (10 ft/3.05 m)
  • RS-232 serial cable (3 ft/0.91 m)
  • Installation CD-ROM
    • Quick Reference Card
    • User Guide


Lifetime limited manufacturer warranty. Click here for full warranty information.

Support & Documentation

Support Page  HTML User Guide



** Support for 64 bit operating systems requires a driver update (available in the support section of this website).
* Capable of receiving at up to 56 Kbps and sending at up to 48 Kbps (or 31.2 Kbps with V.90 server). Due to FCC regulations on power output, receiving speeds are limited to 53.3 Kbps. Actual speeds may vary. V.92 and V.90 features require compatible phone service and support from your Internet Service Provider (ISP). USRobotics modems featuring V.92 enhancements are backward compatible and will negotiate the highest possible speed when connecting to an ISP.
† Requires Windows operating system.