Why buy the Courier® 56K V.92 Business Modem?

There are some connectivity products that are so common, we take them for granted. The modem is one of those tools. Due to its usefulness and widespread presence, the modem is an off-the-shelf item that many see as easily disposable. So why should you be concerned with finding the best possible modem when you can walk into any store and purchase one for the price of a family dinner?

The answer lies in how you plan to use that modem. For business users who depend on the modem to make mission-critical connections, a cheap, disposable modem will simply not suffice. A full featured, reliable modem is necessary to fulfill mission-critical needs. The USRobotics Courier modem is that modem.

Why it’s best

When failure is not an option, the world-class capabilities of the USRobotics Courier modem provide the best analog connections – faster, consistent, reliable, and secure – over phone lines of varying quality the world over.

The Courier’s performance is superior to the competition, not only with the fastest connection speeds, but with data throughput as well. Other modems may achieve a high connect speed, but their data throughput rates don’t measure up to those of the Courier.

The feature set available in Courier modems is unique to USRobotics. No other modem provides the same combination of features and security, including:

What makes it different?

The feature set available in Courier modems is unique to USRobotics – no other modem provides the same combination of features and security.

Global Reach

3 Clip-on adapters

Courier modems are known around the world for their performance, reliability, ease of use and flexibility. Courier modems are designed to work in countries throughout the world using V.Everywhere Technology, and are approved for use in more than 75 countries. Each Courier includes a VersaPower Kit - a 110V to 240V power supply that includes clip-on plugs (for use in N.A., Europe, the Middle East and Africa), along with a clip-on power cord adapter that can be used to make it an inline power supply. To simplify international requirements customers can purchase one modem for use around the world. USRobotics offers accessory kits (grounding cable, power cable or clip, phone connector) where necessary to work in the countries listed here.

Dial Security and Dial Back Security

Courier Dialback

Dial security features mean only users with the proper security passwords and keys will be allowed to communicate with the Courier. Advanced dial back security offers a higher level of security where an outside line dials into the Courier, authentication is received, and the Courier then dials a pre-programmed number to ensure the secure transmission of data to that outside line. Dial back security ensures secure delivery of data, even if passwords or security keys are compromised.

For example, if a bank wants to obtain customer account information from an individual branch for processing, the Courier at home office dials out to the branch and provides authentication data. The Courier with dial back security enabled receives the authentication information, severs the connection with the home office, dials the pre-programmed number for the home office, and establishes a secure connection for sending customer data. This ensures data is not obtained by an outsider dialing into the branch network. The branch’s network is only authorized to call and give the data to the home office, providing an additional level of security for bank customers.

Advanced Line Probing Technology

USRobotics’ Advanced Line Probing technology finds the “potholes” in the path between the modem and the data’s destination and works with equipment on the other end to avoid those obstacles to ensure that data is sent at the fastest speed possible. In addition, many 56K modems “shift down” to lower connect speeds when operating on troublesome lines, whereas the Courier is the only modem to “shift up” at the first available opportunity to always provide the fastest connection possible.

Line probing technology makes the Courier ideal for point of sale transactions to ensure customers are not kept waiting while payment or purchase data is transmitted.

External Dip Switches

External dip switches allows the Courier to be configured without being accessed via a terminal. The modem has an on board instruction set on the bottom of the Courier, offering a summary of frequently used commands, as well as instructions for the Dip Switch settings.

Carrier Loss Redial

Carrier loss redial technology creates a ‘virtual lease line’ between two modems, allowing for the establishment of a continuous connection. A continuous connection is key when sending sales reports, pricing information, or inventory data. Interruptions in this data may mean an inactive sales force, incorrect pricing information for your sales force, or even lost sales. Modems can go offline for a variety of reasons, but if this data is transmitting in the middle of the night, you may not know of the modem’s status until the next morning, meaning you must address the lack of data before you can start the day.

With USRobotics’ carrier loss redial feature, your modem will automatically try to connect until a connection is made, so data is sent overnight instead of when you arrive in the morning.

Universal Compatibility

The Courier modem supports all modulations and protocols, all computers and hardware, and is approved for use in more than 75 countries.

  • V21, V22, V22Bis, V23, V32, V32Bis, V34, V90, V92
  • MNP1-5, V42 and V42Bis
  • V24 serial port interface
  • Supports Asynchronous and Synchronous modes
  • Works with leased lines
  • Compatible with all computers and hardware including special computers such as AS/400, cash points, and routers
  • Workstations running DOS, Windows (all versions), Unix, and Linux
  • CBR21, FCC and CCITT approval

Remote Management

USRobotics’ Courier modem is one of the few with advanced remote management features, including the ability to diagnose and repair problems from a central IT department. The Courier allows IT staff at a central office to access the modem in an individual branch or office to troubleshoot, make settings changes, or reconfigure the modem completely. The ability to manage remotely saves companies time and money that would otherwise be spent sending an IT staff member to each office to make changes and troubleshoot.

The Courier not only has remote configuration, but can actually be remotely upgraded when firmware upgrades are available. With remote management features, your technicians will never need to sit on the phone with a store manager or sales person walking them through troubleshooting or repairs of the Courier.

Out-of-Band Management

USRobotics’ Courier modems are ideal for applications where out-of-band management is desired. Providing a level of redundancy and connectivity in the event of a LAN and WAN system failure, the Courier modem allows technicians to bypass the failed systems and use a telephone link to reach network infrastructure to diagnose and repair the failure. The security features of the Courier also prevent intrusion into a failed network by outsiders.

Brown-out Detection

The Courier has brown-out detection that prevents misbehavior during brown-outs or drop-outs by causing a controlled reset.

Hardware “Multi-Switch”

Unique to Courier is an external switch, labeled “Voice/Data”, the name short changes the actual functionality, it can be set to perform a number of functions:

  • Disable the button
  • Voice/Data – Originate Mode
  • Voice/Data – Answer Mode
  • Redial last number
  • Dial Number stored at position 0
  • Auto Answer On/Off Toggle
  • Reset Modem
  • Initiate Remote digital Loopback
  • Busy Out Phone Line Toggle
  • Execute Stored Command – When pushed the modem executes a custom developed command string


Courier has a lifetime warranty for continual support.

Product InformationProduct Page
Buy Now
List of Online Resellers

Comparison chart Click here to see how the USRobotics Courier modem compares to its only competitor, the MultiTech MT5634ZBA.

More about modems...Modems 101
V.92 White paper
V.92 Q&A

Courier Business ProductsModem Technology
Why Buy Courier?
Out-of-Band connections
Point of Sale (PoS)
Case Studies