Arrangement for transferring data to an attendant console

Abstract From the Canadian patent

An arrangement for transmitting data messages between a CENTREX equipped central office exchange and a remotely located attendant console. The arrangement includes an operating unit residing in an interface circuit connected between the CENTREX and the attendant console. The operating unit includes sequential memory means connected to the CENTREX and to controller means arranged to receive and store a data message from the CENTREX. The CENTREX sends a data available signal to the controller means signaling that a data message is available for transfer from the sequential memory means. In response, the controller means sends the CENTREX a sequential memory read control signal signaling that …