TRS-80 Model 100: Phone port pinout

From: Michael Sokolov <msokolov_at_ivan.Harhan.ORG>
Date: Sat Feb 5 14:15:14 2005

John Foust <> wrote:

> Is it possible that modern modems can be configured into a
> more 103A-compatible mode? Like forcing to answer at 300?

Modern modems do support Bell 103A mode at 300 baud; I have 3 USR Courier
V.Everything modems on one of my VAXen and I can dial into them from a
TI 707 (portable printing terminal with a built-in 300 baud modem).

But from what others have said in this thread it seems that Tandy's
implementation of the Bell 103A modulation is non-standard.

Received on Sat Feb 05 2005 - 14:15:14 GMT

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:37:36 BST