Interface circuit for transmitting command codes to an...

Details Interface circuit for transmitting command codes to an... Interface circuit for transmitting command codes to an...

H - Electricity

04

M

344/13

H04M 3/42 (2006.01) H04M 3/60 (2006.01) H04Q 11/06 (2006.01)

Patent

CA 1256185

AN INTERFACE CIRCUIT FOR TRANSMITTING COMMAND CODES TO AN ATTENDANT CONSOLE ABSTRACT OF THE INVENTION An interface circuit for transmitting data messages between a CENTREX equipped central office exchange and a remotely located attendant console. The interface circuit includes control and sense decoding means arranged to output control signals to the interface circuit and transfer control signals and data messages to the CENTREX. Sequential memory means connected to the control and sense decoding means receives and stores from the CENTREX data messages responsive to an enabling signal from the CENTREX. The control and sense decoding means signals a controller means connected to the sequential memory means that data messages have been loaded in the sequential memory means. The controller means then transfers the data messages out of the sequential memory means and processes the received data messages, storing the data messages in a temporary memory. The controller means transfers the data messages from the temporary memory to sending means which transmits the data messages to the attendant console.

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