Arrangement for transferring data to an attendant console

H - Electricity – 04 – M

Patent

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344/13

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

Patent

CA 1256182

AN ARRANGEMENT FOR TRANSFERRING DATA TO AN ATTENDANT CONSOLE ABSTRACT OF THE INVENTION 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 the controller means is reading the sequential memory means. State machine means called by the controller means transfers a first byte of the data message from the sequential memory means to temporary memory means. The state machine means accepts all additional characters from the sequential memory means and stores the characters in the temporary memory means until an end of data message character sequence is received. An analysis means is then called by the controller means which ascertains the data messages destination. Sending means connected to the attendant console and to the controller means transmits the data message to the attendant console. The transmission of the data messages is terminated by the controller means by resetting the sequential memory read control signal in response to the CENTREX resetting the data available signal. This signals the CENTREX that the transmission is complete.

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