Connection, in this context, means electric (more precisely: conductive) connection between electric subsectors, or any other electrically continuous zones, including sources and sinks. Connection properties are not detailed here. The most obvious one would be "on" / "off" (time-dependent). Other properties, such as being remotely controlled, or the ability to be actuated under power, or the switching times, are properties (required or observed) of the traction posts and their components. They shall not be considered properties of the connection itself.