Abstract: A network interface includes a receptacle configured to receive a plug, a first contact and a second contact each disposed in the receptacle, and a combination of a resistive element and a normally closed switch arranged in series with each other. The combination is coupled between the first contact and the second contact, and has a first configuration in which the switch is opened responsive to a presence of the plug within the receptacle, and a second configuration in which the switch is closed responsive to an absence of the plug from the receptacle.

Abstract: A network interface includes a receptacle configured to receive a plug, a first contact and a second contact each disposed in the receptacle, and a combination of a resistive element and a normally closed switch arranged in series with each other. The combination is coupled between the first contact and the second contact, and has a first configuration in which the switch is opened responsive to a presence of the plug within the receptacle, and a second configuration in which the switch is closed responsive to an absence of the plug from the receptacle.

Abstract: A monitoring system for use with at least one device configured to provide information relating to the device includes at least one first input configured to receive a plurality of second, inputs from the at least one device indicative of at least one parameter relating to the at least one device, and a processor coupled to the at least one first input, the processor configured to provide a user with indicia of the second inputs for defining an event and at least one criterion for defining the event using at least one of the second inputs, the processor being configured to prompt the user to define the event using at least one of the second inputs and the least one criterion and to provide guidance to the user regarding the second inputs and the at least one criterion for defining the event.