In the end, only two non-modem devices were added to the line. 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. Box has wear and some damage, see pictures. An obvious solution was to use the RS serial port; modems were serial devices and generally driven off RS anyway, and most computer designs included an RS port, or some variant. Model No Power Cord. New other see details. There needed to be some way to indicate that the characters flowing out from the computer to the modem were not simply additional data to be sent to the far end, but commands to be acted on.

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The Smartmodem was the first modem integrating complete control over the phone line, and that allowed it to be used in exactly the same fashion with any computer. The connection and disconnection was entirely manual, with the user picking up the phone’s handset, dialing manually, and then pressing the handset into the coupler if a carrier frequency was heard. For instance, the autodialler was a system that automated the action of picking up the phone and dialing a number, and was normally implemented as a separate box that connected to another port on the host computer.

Not only did it require special driver software, but a different hardware design was needed for every computer busincluding Apple II, S, TRSand others. Business picked up quickly, and in January they quit their jobs at National Data to form their own company, D.


To compete with Hayes on price, early competitors manufactured modems using low-cost components that were often unreliable. Aftermodems increasingly became a commodity item. Within 2 miles 5 miles 10 miles 15 miles 20 miles 50 miles 75 miles miles miles miles miles miles miles miles miles of.

Additionally, the rise of the Internet in the mids made point-to-point communications far less interesting. In the end, only two non-modem devices were added to the line. Languages Deutsch Suomi Edit links.

Sirkis acquiesced, and a working prototype was soon complete. At that price point, Hayes could build hhayes “Cadillac of modems”, using high-quality components, an extruded faxmidem case, and an acrylic front panel with a number of LED indicators. 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.

At the time, Hayes was one of the few modem companies with the capital and engineering wherewithal to develop entirely new modem architectures.

Since we have many of these listed you may not get the unit pictured. Although powerful, the internal modem was commercially impractical.

Modem companies quickly incorporated v. Views Read Edit View history. 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. Skip to main content. In other projects Wikimedia Commons. Since these characters could be sent to the modem using the same two data pins that the port would need anyway, they could be sure that such a system would work on every computer.


Soon there were literally hundreds of similar models on the market, and Rockwell’s competitors also rushed in with similar chipsets of their own. Several solutions to the problem were studied, and in the end Heatherington decided the only practical one was to have the modem operate in two modes.

Hayes Microcomputer Products

When this was received from the computer, the modem would switch from data to command mode. I picked this up at an estate sale. As speeds increased with the introduction of V. Item Location see all. In an attempt at diversification in January it had acquired most of the assets of local area network software developer Waterloo Microsystems Inc of Waterloo, Ontario and belatedly entered the operating system OS market in June with LANstep, a network OS for small offices, but this was subsequently abandoned in faxmoddm the 96000 of stiff competition particularly from Novell NetWare.

Hayes Modem for sale | eBay

It is flash upgradable to 56k. 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. Used in great condition.

In the other, command modedata forwarded from the computer were instead interpreted as commands. Hayes was no exception; the company introduced its v. I plugged it in and it powers up!