Hayes left the Georgia Institute of Technology in the mids to work at an early data communications company, National Data Corp, a company that handled electronic money transfers and credit card authorizations. By clicking the accept button below, you agree to the following terms. The Bell companies were interested in deploying ISDN, but doing so required customer-end installations to make their conventional telephones work, which made the system unattractive for wide-scale deployment. They later referred to the protocol as “Express 96”. The first of these, v. Overall the Hayes Accura V.

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By clicking the accept button below, you agree to the following terms. An external volume control knob would make a nice addition for those of us who need to ensure the phone line is free before dialing out. The problem was how to move from mode to mode. Another confuses the original Smartmodem with the later V-Series modems, reversing the modm dates and features.

When they moved to the Smartmodemthey simply extended modsm set further, using the same syntax.


Windows would not ahyes the Hayes Accura drivers and this part of the installation was cancelled. You have chosen to save the following item to a parts list:.

This page was last edited on 20 Novemberat By using this site, you agree to the Terms of Use and Privacy Policy. Disconnecting at the end of the session was also manual, with the user lifting the handset out of the coupler and nodem it up on the phone body in order to depress the hook switch and return the phone to the on-hook state and end the call.


The good folks at Hayes submitted two modems for evaluation, one internal and one external. You agree that the Information as provided here by RS may not be error-free, accurate or up-to-date and that it is not advice.

Robotics USR and Telebit to meet market demand with faster products.

Hayes Accura V.90/K56Flex Internal and External Data/Fax Modems

An K zipped bitmap image from the Canadian Airforce image archive www. The market grew rapidly in the mids, and as the Smartmodem was the only truly “universal” modem on the market, Hayes grew to take over much of the market. This “history” is confusing the Smartmodem with the original Smartmodem.

The design was generally unsuccessful, and for the first time Hayes lost cachet as the leader in modem design and manufacture. Thank you for your feedback. All of these survived for some time into the early s.

As a result of this shift, there was no real need to limit the user to the speed of the long-distance lines, giving the Bell companies flexibility in terms of what to install at the user’s site.

In one, data modeall data forwarded from the computer were modulated and sent over 5k connected telephone line as it was with any other modem.

Hayes Technical Support: ACCURA V/V 56K External

Sending feedback, please wait With a 44K connection the Accura downloaded the 7. Such devices were typically expensive and generally used by larger organizations like banks, who might use one to send an end-of-day file to branch offices. Although powerful, the internal modem was commercially impractical. One option would be to signal this change—”put yourself into command mode”—via ahyes of the many pins in the RS cable.


There were optional systems to dial the phone or pick it up, but these were generally implemented as separate devices also intended to be used on one end of the connection or the other. In the early s a number of greatly cost-reduced high-performance modems 5k6 released by competitors, notably the SupraFAXModemwhich eroded price points in the market.

Oddly it was the Rockwell chip set that also re-standardized the various command sets back on the original high-speed ones introduced by Hayes. Zoom continues to use the Hayes name on some of their products. Hayes was a computer hobbyist, and felt that modems would be highly compelling to users of the new 8-bit computers that would soon be known as home computers.

At the time, Hayes was one of the few modem companies with the capital and engineering wherewithal to develop entirely new mdem architectures. Such modems had access to the computer’s main memory, and by dedicating certain memory locations or registers to various status readouts or commands, software programs running on the computer could control the modem.

Of course it was entirely possible that hwyes computer would send this sequence for other reasons, for example, the sequence might be contained within a text file describing how modems worked. The main problem with producing such a modem was forwarding commands from the computer.