Operating a fire system network

A non-transitory machine-readable medium having instructions stored thereon which, when executed by a processor, cause the processor to:

• receive, by a plurality of gateway devices, a plurality of first messages from each of a plurality of fire system devices associated with a facility via a first spreading factor;
• receive, by the plurality of gateway devices, a second message from a fire system device of the plurality of fire system devices responsive to the fire system device determining a fire event, the second message received via a second spreading factor;
• and
• send, by each of the plurality of gateway devices, a third message to the plurality of fire system devices responsive to receiving the second message, wherein the third message, received from any of the plurality of gateway devices, is configured to activate a fire alarm.

A fire system, comprising:

• a plurality of fire system devices associated with a facility, wherein each of the plurality of fire system devices is configured to send deterministic messages;
• a gateway device configured to receive the deterministic messages;
• another gateway device configured to receive the deterministic messages;
• wherein, in response to a fire system device of the plurality of fire system devices determining a fire event:
• the fire system device is configured to send a message;
• the gateway device and the other gateway device are each configured to send a block message to the plurality of fire system devices responsive to receiving the message from the fire system device;
• and
• each of the fire system devices is configured to activate a fire alarm responsive to receiving either the block message from the gateway device or the block message from the other gateway device.