A service gateway includes one or more network adapters, configured to capture signaling messages in respective communication networks and to process the signaling messages to generate network signaling primitives indicative of network events in a network-independent format. A resonant circuit extends from a load to a line terminal so that a potential of the load substantially tracks a potential of the line terminals. All sensors are in network communication with the control server, main and sub data collectors. The timing circuit is to disable the power switch from receiving the switching signal in response to the feedback signal after detection of a fault condition.