H - Electricity – 04 – M
Patent
H - Electricity
04
M
344/13
H04M 3/42 (2006.01) H04M 3/60 (2006.01) H04Q 11/06 (2006.01)
Patent
CA 1256184
AN INTERFACE CIRCUIT FOR TRANSMITTING KEYCODES TO A CENTREX ABSTRACT OF THE INVENTION An interface circuit for transmitting data messages between a remotely located attendant console and a CENTREX equipped central office exchange. The interface circuit includes control and sense decoding means connected to control and sense fields. Receiving means connected to the attendant console receive data messages transmitted from the attendant console. Controller means connected to the receiving means process the received data messages, storing the data messages in a temporary memory. Sequential memory means connected to the temporary memory receive and store in sequential order the data messages after they are processed. The sequential memory means further includes memory enabling means connected to the control and sense decoding means. In response to the controller means signaling the CENTREX that data messages have been loaded in the sequential memory means, the CENTREX sends an enabling signal to the memory enabling means transferring the data messages out of the sequential memory means in a first in first out order to the CENTREX via the control and sense decoder means and the sense field.
526189
Gte Communication Systems Corporation
R. William Wray & Associates
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