Browse Prior Art Database

Modem With Mixed Multiplexing and Fanout Functions

IP.com Disclosure Number: IPCOM000061497D
Original Publication Date: 1986-Aug-01
Included in the Prior Art Database: 2005-Mar-09

Publishing Venue

IBM

Related People

Authors:
Epenoy, G [+details]

Abstract

Data multiplexing in synchronous modems uses multibit per baud encoding to create different independent channels working simultaneously. Data, elastic buffering, channel interface status, channel wrap tests, etc., are microprocessor-controlled. The microprocessor is given access for the different channels via a set of fixed addresses IEA for the first channel, B for the second channel, etc. The data transmission rate allocated to a channel is specified by the CCITT recommendations. The fanout function consists in duplicating the modem interface to allow several attachments of data terminal equipment (DTE) or connected data communication equipment (DCE) to work alternatively in a multipoint configuration.