System for controlling multiple line cards on a tdm bus

Abstract From the Canadian patent

In a TDM telecommunications terminal wherein, multiple line cards are connected to a TDM bus each, line card location is provided with an identification code. A processor controlled circuit generates a programmable sequence of identification codes which are transmitted on a configuration bus in time slots synchronized with the time slots of the TDM bus. The configuration bus is connected to each of the line cards, which include a comparator logic circuit for comparing the identification of the line card location to the identification codes provided on the configuration bus. When a match is detected the line, card is enabled and is given access to the TDM bus. Through the programmable …