Arrangement for initializing a centrex console interface circuit

Abstract From the Canadian patent

An arrangement for initializing an interface circuit connected between a CENTREX equipped central office exchange and a remotely located attendant console. The arrangement includes an operating unit residing in the interface circuit. The operating unit includes controller means connected to memory means and to the CENTREX. The controller means receives an initialization signal from the CENTREX and returns an initialization in progress signal. Memory verification means called next by the controller means ascertains if all locations in the memory means are operable. The controller means sends an error signal to the CENTREX in the event the memory verifications means detects an error. Next, …