A few external modems already offered the ability to dial the phone by entering a phone number when the modem was first started, but the real problem was somehow sending a command to hang up, while the modem was already connected. In the other, command mode , data forwarded from the computer were instead interpreted as commands. The modem market in the s was very simple and stagnant. This smart modem approach dramatically simplified and automated operation. This was not simple unless the modem “knew” what data were initially being sent, allowing it to time the bits and thereby guess the speed. The brand name was purchased and revived by onetime rival Zoom Technologies in July

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Hayes Optima 96 5101am SMARTMODEM 9600 Fax96

The end-user was offered much higher speeds while still being able to use existing phones, with the added “benefit” of helping tie the user to the telephone company’s own ISP.

Rockwell had taken their commands from the V-series Smartmodems, so by the mids the market optmia once again based largely on a “real” Hayes command set. 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.

The main problem with producing such a modem was forwarding commands from the hqyes.

Hayes Smartmodem OPTIMA V Vintage Modem AM -Sale & help comments reviews.

Zoom continues to use the Hayes name on some of their products. Add to watch list. Optimma item may be a floor model or store return that has been used. Aftermodems increasingly became a commodity item.


Will usually ship within 1 business day of receiving cleared payment – opens in a new window or tab. Although powerful, the internal modem was commercially impractical. Resume making your offerif the page does not update immediately. Subject to credit approval. List your items fast and easy and manage your active items.

Heatherington eventually suggested the use of a well-known character sequence for this purpose, recommending AT for “attention”, which is prefixed on all commands. Hayes and the company’s marketing manager Glenn Sirkis approached Heatherington with an outline for a new hayse external modem.

This smart modem approach dramatically simplified and automated operation.

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. For additional information, see the Global Shipping Program terms and conditions – opens in a new window or tab. 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. 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.

There are 1 items available. Hayes’ job was to set up modem connections for NDC’s customers.

This was the first time that the CCITT’s standard predated Bell’s introductions, avoiding compatibility issues that had plagued earlier standards. Learn More – opens in a new window or tab International shipping and import charges paid to Pitney Bowes Inc.


From Wikipedia, the free encyclopedia. There were optional systems to dial the optims 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.

Views Read Edit View history. In fact, there were very few pins that were guaranteed to work on all computers, mostly the data in and out, “ready” indications that said whether the modem or computer was operational, and sometimes flow-control pins.

An item that has been used previously.

Hayes Microcomputer Products

The modem market in the s was very simple and stagnant. Other offers otpima also be available. One option would be to signal this change—”put yourself into command mode”—via one of the many pins in the RS cable.

hzyes This could be addressed in internal modems that plugged directly into the computer’s motherboard. Both of these items’ sales were apparently dismal. Sign in to check out Check out as guest.