The InnovationQ application will be updated on Sunday, May 31st from 10am-noon ET. You may experience brief service interruptions during that time.
Browse Prior Art Database

Low-Cost Time Division Switch Module for Telephone Switching Applications

IP.com Disclosure Number: IPCOM000047162D
Original Publication Date: 1983-Oct-01
Included in the Prior Art Database: 2005-Feb-07

Publishing Venue


Related People

Brady, RL Dunn, JM [+details]


In contemporary telephone systems, voice and destination selection (dial number) signals are passed through switching exchanges which operate in either a space division or time division mode. Space division systems employ switching matrices which provide continuous circuit connections between linked user port units and may process the voice and selection signals in either analog or digital form. Time division multiplex (TDM) systems generally handle only digital signals, usually in PCM (Pulse Code Modulated) form, and employ time slot interchange units to pass voice and signal traffic between dynamically allocated time slots at incoming (source) and outgoing (destination) ports.