ENVIRONMENTAL RETAIL SALE OF FUEL, USING ACTIVE COMMUNICATION ON EXISTING CABLE WIRING

摘要

Various systems and methods have been implemented to facilitate active communication over existing cabling. This can be implemented in a fuel-dispensing environment, where the fuel dispenser may include a diode connector communicatively associated with existing cabling to receive active communication from one or more components of the office space over the existing cabling during a power failure communication with one or more components of the service room, where the diode connector provides power from the active connection to the modem at a wide losny connection. In the dispenser and / or service room components, a relay can be used to determine whether to use an active link or an existing link, based on whether there is power to the components that communicate via existing cabling. In addition to this, there is a failure-free protection of the chains of the existing connection in the case when active communication becomes active.