USR3453C - Courier® External 56K V.92 Gobal Dial-up Business Modem

NOTE: The USR3453C has been discontinued.

The Courier 56K V.92 Dial-up External Business Modem is the recommended replacement‡.

The USR® 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 USR product line.

Product availability

North America

Product Code: USR3453C

Discontinued

Buy accessories

International

North America - recommended replacement (USR3453C-REF)

Europe - Discontinued

Global Kits

Contact

Get in touch for the latest information on Export Control (ECCN & HTS)

USR3453C product images

Front view

USR3453C features

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 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

Powerful management tools

Remote access and 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

Footnotes

* 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.

** Support for 64 bit operating systems requires a driver update (available in the support section of this website).

† Requires Windows operating system.

‡ Courier (USR3453C-REF) is the recommended replacement for Courier USR3453C, but features and specifications do vary. It is suggested to verify requirements before purchasing replacement units.

Additional resources

For manuals and documents, videos, firmware and other product information please visit the support page.