Patent ID: 8412789

Claim:
A security system connected with a local area network, the security system comprising: a first dedicated, hard-wired field bus; a control panel sending data through the first field bus; a first plurality of peripheral devices coupled to the first field bus; wherein each of the first plurality of peripheral devices receives data from the control panel; a first transfer device connected to the control panel; wherein the first transfer device packetizes the data from the control panel and sends the packetized data through the local area network, and wherein the first transfer device generates an acknowledgment message in response to the data from the control panel before the packetized data is sent through the local area network; a second dedicated, hard-wired field bus; a second transfer device coupled to the second field bus; wherein the second transfer device receives the packetized data from the first transfer device and depacketizes the packetized data; and a second plurality of peripheral devices coupled to the second field bus; wherein each of the second plurality of peripheral devices receives data from the second transfer device, generates a second acknowledgement message in response to the data from the second transfer device, and sends the second acknowledgement message to the second transfer device, and wherein the second transfer device does not send the second acknowledgment message to the control panel.