The main problem with producing such a modem was forwarding commands from the computer. Hayes Accura V. In this way, the modem could be instructed by the computer to perform various operations, such as hang up the phone or dial a number. Slight residue from a sticky label on top. 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. There are actually two states that the modem can be in.

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So what, you say, that’s what they all do! 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.

Modem is new in open box. In order to filter out these “accidental” sequences, Heatherington’s design only switched to command mode if the sequence was led and followed by a one-second pause, the guard timein which no other data were sent. In one, data modeall data forwarded from the computer were modulated and sent over the connected telephone line as it was with any other modem.

Hayes Microcomputer Products

Heatherington eventually suggested the use of a well-known character sequence for this purpose, recommending AT for “attention”, which is prefixed on all commands. The main problem with producing such a modem was forwarding commands from the computer. Please provide a valid price range. Along with this, the real “brains” behind the operation is a 4K ROM controller program. Delivery Options see all.

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Hayes Microcomputer Products – Wikipedia

No way to fully test. As a result of this shift, there was no real need to limit the user to the speed hayrs the long-distance lines, giving the Bell companies flexibility in terms of what to install at the user’s site. Of course it was entirely possible that the computer would send this sequence for other reasons, for example, the sequence might be contained within ahyes text file describing how modems worked.

Guaranteed Delivery see all. Those of you who only intend to telecommunicate on 1020 occasional basis may not find use for many of the modem’s features. Since we have many of these listed you may not get the unit pictured. Skip to main content. Some popular computers, like the Ataridid not even integrate internal slots. What was needed was a single modem that could do it all; connect directly to the phone, answer incoming calls, dial numbers to initiate outgoing calls, and hang up when the call was complete.

Upon receipt the modem would “pick up the phone” and dial the number listed. Well, the piece of hardware which made my task much easier than anticipated was the Hayes Smartmodem Hayes Series Accura V. One malfunction occurred which caused the modem to be shipped back to Hayes.


Includes power cord and phone cord. Modem companies quickly incorporated v.

Hayes originally had big plans for the form factor, referring to it as the Hayes Stack and intending to release a range of products that could be stacked beside the computer.

Phone cable is included – modem cable to go to computer is NOT included.

Hayes Modem for sale | eBay

The problem was how smartmoden move from mode to mode. Their system was introduced commercially in the SupraFAXModemwhich went on to become a runaway bestseller. Robotics USR and Telebit to meet market demand with faster products. Hayes’s slow entry into the high-speed market led to a fracturing of the command set.

Box has wear and some damage, see pictures. The modem is equipped with an internal speaker and allows you to monitor the call. In the early s a number of greatly cost-reduced high-performance modems were released by competitors, notably the SupraFAXModemwhich eroded price points in the market.

Hayes was a computer hobbyist, and felt that modems would be highly compelling to users smarrtmodem the new 8-bit computers that would soon be known as home computers. Used in great condition.