USR was one of many companies to offer dial-up modems for personal computers. FC support, because V. These are electronic versions of the original documentation. At any rate, the 56K isn’t the modem that Ole was asking about, so the question is sort of moot. OFF Verbal word results.

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I had thought that it was the earlier ones that used 20V. Got one to sell?

Y4 Use factory configuration 2. Sets the time in seconds of testing before the modem automatically times out and terminates the test. When set to 0, the timer is disabled. Y3 Use factory configuration 1.

USRobotics Support: Model sportster – sportster

Most users will use the default; this register is useful for compatibility with older systems and operating software. Guaranteed 3 day delivery. Cellular Modems and Gateways make the M2M world go round. Q1 Quiet mode; no result codes. What you see is what you get.

USRobotics Sportster Fax Modem (Serial)

The 20V connector is a bit larger and more round than the 9V. Does not require the AT prefix or a Sporhster Return. F1 Local echo OFF. Item Location see all.

I’ve had a hard time IDing them. I2 Results of RAM checksum. OFF Suppresses result codes. Downstream Data Rate see all. USR was not the only company making modems with proprietary protocols; Telebit ‘s TrailBlazer series offered speeds up to As the price differential decreased, however, V. Send and receive secure data and faxes while running other applications.


If I don’t get an answer specifically on the two models, then I think I’ll try the 9VAC on both of them, and if it doesn’t work on one, then I will try spoftster 20V on that one – and cross my fingers. Prior to the development of morem such as the V. The us robotics sportster 28800 fax modem had a reputation for high quality and support for the latest communications standards as they emerged, notably in its V.

Assuming you have downloaded the file to the root directory of your hard disk drive. It would be nice to find the appropriate voltages for all the model so that people in the future can get these vintage modems going. Y4 Use factory configuration 2 Z Resets modem.

I was hoping that someone here had the exact models I listed. Used for unusual software incompatibilities. Used mainly to redial.

Join Date Aug Posts 1, This is true for 28k8, 33k6 and 56K. Command Mode Local Echo Suppression. However, USR became the most successful of the three, fxx to a marketing scheme that offered large discounts to BBS sysops.