Abstract: The invention relates to a remotely controllable switch unit for switching the mains inside an electrical installation, wherein the switch unit comprises an electrically controllable switch, a control circuit for controlling the switch, a receiver coupled to the control circuit for receiving wireless signals, wherein the switch unit is adapted for mounting in a housing of a wall socket. As a result of these measures it is no longer necessary to place a separate unit between the wall socket and the plug for connecting thereto. The appearance of an electrical installation is hereby improved. Relative to the “bus” system and similar devices, the advantage results that arranging of such a switch unit can take place in particularly simple manner; no changes need after all be made to the wiring of the electrical installation.

Abstract: A system for controlling Signaling System #7 (“SS7”) message traffic by defining a message control policy for SS7 signaling links and accepting, modifying, responding to, or rejecting SS7 signaling messages according to the defined control policy is disclosed. The control policy is composed of a set of access rules that are loaded onto one or more firewalls located at strategic points in a SS7 network. The firewalls use the access rules as the basis for examining each SS7 message a signaling node transmits or receives on a signaling link and determining whether or not to pass, modify, respond to, or reject the message. The system includes a graphical user interface for providing configuration information, as well as information as to the current and past states of the message traffic of a signaling node.