System and method for connecting a security system using a network

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.