Interface circuit for transmitting command codes to an attendant

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

1985-12-24

1987-11-10

Dwyer, James L.

Telephonic communications

Centralized switching system

379229, H04M 342

Patent

active

047062770

ABSTRACT:
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 circuitry arranged to output control signals to the interface circuit and transfer control signals and data messages to the CENTREX. Sequential memory connected to the control and sense decoding circuitry receives and stores from the CENTREX data messages responsive to an enabling signal from the CENTREX. The control and sense decoding circuitry signals a controller connected to the sequential memory that data messages have been loaded in the sequential memory. The controller then transfers the data messages out of the sequential memory and processes the received data messages, storing the data messages in a temporary memory. The controller transfers the data messages from the temporary memory to sending circuitry which transmits the data messages to the attendant console.

REFERENCES:
patent: 4160129 (1979-07-01), Peyser et al.

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