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 in the face of stiff competition particularly from Novell NetWare. Through 30 dial-ups the Accura consistently achieved a 44K connection, no more, no less. Today almost all modems use a variant of the Hayes command set. In the other, command mode , data forwarded from the computer were instead interpreted as commands. Another confuses the original Smartmodem with the later V-Series modems, reversing the introduction dates and features. Email was also sent on its way noticeably faster.

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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. 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.

While it would have been possible to use some of these pins for the sort of command-switching they needed the “ready” indications, for example, would have sufficed Heatherington instead came up with the idea of using a rarely seen sequence of characters for this duty.

Hayes Microcomputer Products

Click here to find lowest prices on this product. This “history” is confusing the Smartmodem with the original Smartmodem. The foregoing information relates gayes product sold on, or after, the date shown below. Some popular computers, like the Ataridid not even integrate internal slots. Please select an existing parts list. Also differentiating Hayes from its competition was the Smartmodem’s use of the guard time.


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

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

An K zipped bitmap image from the Canadian Airforce image archive www. Although powerful, the internal modem was commercially impractical.

This was the first time that the CCITT’s standard predated Bell’s introductions, avoiding compatibility issues that had plagued earlier standards. Along with the driver issue, the test Accura external also has a tendency to keep the red “CD Carrier Detect ” LED lit even though the modem was clearly off-line.

The external Accura is housed in an attractive, sleek white case with the appropriate LEDs located at the front. When this was received from the computer, the modem would switch from data to command mode.

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

Hayes was never able to re-establish itself as a market leader through this era. Views Read Edit View history. An external volume control knob would make a nice addition for those of us who need to mocem the phone line is free before dialing out. Hayes Microcomputer Products was a U.

Moedm this case it could be safely assumed that the sequence was being sent deliberately by a user, as opposed to being buried in the middle of a data stream.

The product detailed below complies with the specifications published by RS Components. Windows would not accept the Hayes Accura drivers and this part of the installation was cancelled. The product does not contain any of the restricted substances in concentrations and applications banned by the Directive, and for components, the product is capable of being worked on hajes the higher temperatures required by lead—free soldering.


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 Manufacturers and RS disclaim all warranties including implied warranties of merchantability or fitness for a particular purpose and are not liable for any damages arising from your use of or your inability to use the Information downloaded from this website. The internal version of the Accura was hwyes as co-operative as its external cousin.

Save to parts list Save to parts list. Modrm external modem cable is not included with the unit. Business picked up quickly, and in January they quit their uayes at National Data to form their own company, D. Hayes was never able to respond effectively. Retrieved from ” https: As speeds increased with the introduction of V. Through all these tests the Accura external maintained a rock-solid connection.

Installation of the external Accura went fairly smoothly. 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. An obvious solution was to use the RS serial port; modems were serial devices and generally driven off RS anyway, 56, most computer designs included an RS port, or some variant.