Abstract: A peripheral unit for use in a water regulation system that controls the intake of water in a water circulation system of a building; it has a power source; a user input interface; a motion detector; a communication interface that is configured to establish a connection with the control panel; and a controller that is configured to send a first transmission to the control panel via the connection for causing the controller of the control panel to actuate opening of the water valve for a given period of time; and send a second transmission to the control panel via the connection for causing the controller of the control panel to actuate closing of the water valve.

Abstract: A peripheral unit for use in a water regulation system that controls the intake of water in a water circulation system of a building; it has a power source; a user input interface; a motion detector; a communication interface that is configured to establish a connection with the control panel; and a controller that is configured to send a first transmission to the control panel via the connection for causing the controller of the control panel to actuate opening of the water valve for a given period of time; and send a second transmission to the control panel via the connection for causing the controller of the control panel to actuate closing of the water valve.

Abstract: A method and apparatus for controlling multicast group subscriptions in a multicast distribution circuit is presented. When a router included in the multicast circuit receives notification to terminate support of a particular multicast group (group leave request), data flow with respect to that multicast group is initially maintained on the communication link coupling the router to the hosts. Queries are issued to hosts on the communication link to determine whether continued support of the particular group is desired by any hosts coupled to the communication link. If, while waiting for a positive response to the queries issued, a request to join an additional multicast group is received, bandwidth availability on the communication link is examined to determine if adequate bandwidth is available for supporting the newly requested group addition. If adequate bandwidth is available, the newly requested group is added to those groups supported on the communication link.

Abstract: A method and apparatus for controlling multicast group subscriptions in a multicast distribution circuit is presented. When a router included in the multicast circuit receives notification to terminate support of a particular multicast group (group leave request), data flow with respect to that multicast group is initially maintained on the communication link coupling the router to the hosts. Queries are issued to hosts on the communication link to determine whether continued support of the particular group is desired by any hosts coupled to the communication link. If, while waiting for a positive response to the queries issued, a request to join an additional multicast group is received, bandwidth availability on the communication link is examined to determine if adequate bandwidth is available for supporting the newly requested group addition. If adequate bandwidth is available, the newly requested group is added to those groups supported on the communication link.

Abstract: A method and apparatus for controlling multicast group subscriptions in a multicast distribution circuit is presented. When a router included in the multicast circuit receives notification to terminate support of a particular multicast group (group leave request), data flow with respect to that multicast group is initially maintained on the communication link coupling the router to the hosts. Queries are issued to hosts on the communication link to determine whether continued support of the particular group is desired by any hosts coupled to the communication link. If, while waiting for a positive response to the queries issued, a request to join an additional multicast group is received, bandwidth availability on the communication link is examined to determine if adequate bandwidth is available for supporting the newly requested group addition. If adequate bandwidth is available, the newly requested group is added to those groups supported on the communication link.