Browse Prior Art Database

Programmable Dual Modem Adapter For A Communication Interface

IP.com Disclosure Number: IPCOM000067998D
Original Publication Date: 1979-Nov-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Leikam, GE Shove, BE Voltin, JA [+details]

Abstract

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.