Prevention of an alarm activation and supporting methods and apparatus
View Patent ↗A method and apparatus for preventing false alarm activation is provided. According to one embodiment of the invention, a determination ( 410 ) is made as to whether an instruction from a controller is a commanded reset, and control of a Subscriber Line Interface Circuit is taken ( 416 ) from a voice processor circuit when the instruction is a commanded reset.
1. A method comprising:
a processor circuit determining whether an instruction from a controller is a commanded reset;
the processor circuit taking control of a Subscriber Line Interface Circuit from a voice processor circuit when the instruction is a commanded reset;
the processor circuit executing the commanded reset;
the processor circuit determining whether the commanded reset has been completed;
the processor circuit switching control of the Subscriber Line Interface Circuit back to the voice processor after the commanded reset has been completed; and
the processor circuit providing an indication that the Subscriber Line Interface Circuit is no longer being controlled after control of the Subscriber Line Interface Circuit is switched back to the voice processor.
2. The method according to claim 1 wherein before switching control of the Subscriber Line Interface Circuit back to the voice processor, the method further comprises:
the processor circuit determining whether the voice processor circuit is in a ready state after the commanded reset has been completed.
3. The method according to claim 1 wherein after the processor taking control of a Subscriber Line Interface Circuit from a voice processor circuit, the method further comprises:
providing an indication that the Subscriber Line Interface Circuit is currently being controlled.
4. The method according to claim 3 , wherein providing an indication that the Subscriber Line Interface Circuit is currently being controlled further comprises:
the switch control circuit setting a flag in a non-volatile memory to indicate the Subscriber Line Interface Circuit is currently being controlled.
5. An apparatus comprising:
a processor circuit that determines whether an instruction from a controller is a commanded reset;
the processor circuit coupled to the switch control circuit, wherein the processor circuit takes control of a Subscriber Line Interface Circuit from a voice processor circuit when the instruction is a commanded reset;
wherein the processor circuit switches control of the Subscriber Line Interface Circuit back to the voice processor circuit after the commanded reset has been completed; and
wherein the processor circuit further provides an indication that the Subscriber Line Interface Circuit is no longer being controlled after the control of the Subscriber Line Interface Circuit is switched back to the voice processor.
6. The apparatus according to claim 5 further comprising:
a non-volatile memory coupled to the processor circuit, wherein the non-volatile memory stores an indication that the Subscriber Line Interface Circuit is currently being controlled.
7. The apparatus according to claim 5 , wherein the switch control circuit is operably coupled to a voice processor circuit and comprises an instruction sent from the controller.
8. The apparatus according to claim 5 , wherein the switch control circuit intercepts an instruction to a switch circuit from the controller.
9. The apparatus according to claim 5 , wherein the processor circuit switches control of the Subscriber Line Interface Circuit back to the voice processor circuit after the commanded reset has been completed and the voice processor circuit is in a ready state.