Programmable Dual Modem Adapter For A Communication Interface
Original Publication Date: 1979-Nov-01
Included in the Prior Art Database: 2005-Feb-20
A program-controlled adapter supports attachment of two modems to a single communications port and control of these modems. Control of this adapter is provided by specialized adaptation of currently defined modem control signals and protocols. Automatic switching between the modems, both for incoming and outgoing calls, is a significant feature of this concept. Both synchronous and asynchronous modems, as well as internal and external modems, are supported.