H - Electricity – 04 – M
Patent
H - Electricity
04
M
344/13
H04M 3/42 (2006.01) H04Q 11/06 (2006.01)
Patent
CA 1256183
AN ARRANGEMENT FOR INITIALIZING A CENTREX CONSOLE INTERFACE CIRCUIT ABSTRACT OF THE INVENTION An arrangement for initializing an interface circuit connected between a CENTREX equipped central office exchange and a remotely located attendant console. The arrangement includes an operating unit residing in the interface circuit. The operating unit includes controller means connected to memory means and to the CENTREX. The controller means receives an initialization signal from the CENTREX and returns an initialization in progress signal. Memory verification means called next by the controller means ascertains if all locations in the memory means are operable. The controller means sends an error signal to the CENTREX in the event the memory verifications means detects an error. Next, interface initialization means called by the controller means resets and clears sequential memory means and resets and clears send/receive means connected to the controller means and the attendant console. Transmission verification means called next by the controller means checks if the transmit and receive loop between the attendant console and the interface circuit is operable. Finally, an attendant console reset means is called by the controller means which sends a reset data message to the attendant console. In response to a successful reset of the attendant console the controller means sends an initialization complete signal to the CENTREX.
526187
Gte Communication Systems Corporation
R. William Wray & Associates
LandOfFree
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