Centurylink Intellectual Property LLC

Metcraft, Inc.

Charles A Palmer

Tod Higman

William Lyle Wiley

Kevin Thomas Boland

Jeffrey Francis Smith

Vincent J Boreas

Donald Eugene Lawver

Daniel H Roberts

Novel tools and techniques for implementing Transparent PSTN Failover. In some embodiments, a VoIP switch might receive a call request for connection between a calling party at a calling telephone number ('TN') and a called party at a called TN. Based on a determination that connection via a session border controller ('SBC') between the VoIP switch and an Internet Protocol (&#x201c;IP&#x201d;) gateway has been lost, the VoIP switch might route the call request to a PSTN redirect TN through the PSTN. One of the Class 5 switch of the PSTN or the IP gateway might replace the redirect TN with the called TN, based on a determination that the redirect TN represents a PSTN failover. The IP gateway may then route the call request to an IP PBX for terminating (establishing) the call connection between calling party and called party, without interception by an operator, receptionist, or auto attendant.

Transparent PSTN failover

Novel tools and techniques for implementing Transparent PSTN Failover. In some embodiments, a VoIP switch might receive a call request for connection between a calling party at a calling telephone number ('TN') and a called party at a called TN. Based on a determination that connection via a session border controller ('SBC') between the VoIP switch and an Internet Protocol (&#x201c;IP&#x201d;) gateway has been lost, the VoIP switch might route the call request to a PSTN redirect TN through the PSTN. One of the Class 5 switch of the PSTN or the IP gateway might replace the redirect TN with the called TN, based on a determination that the redirect TN represents a PSTN failover. The IP gateway may then route the call request to an IP PBX for terminating (establishing) the call connection between calling party and called party, without interception by an operator, receptionizt, or auto attendant.

A system and method for communication failover is disclosed. The disclosed embodiments allow voice communications (both inbound and outbound) that are normally carried by VoIP to be automatically switched over to a PSTN in the event of a failure of the VoIP communication network.

System and method for communication failover

A retrofittable, manually-actuated control valve kit for use in controlling the flow of water from a lavatory tap includes a valve assembly and an actuator assembly. The valve assembly includes a valve movable between flow-blocking and flow-permitting positions, a spring for biasing the valve toward the flow-blocking position, and a valve opening mechanism for opening the valve against the force of the spring in the presence of a predetermined pneumatic pressure in the opening mechanism and for relieving the predetermined pressure to release the valve for movement to the flow-blocking position. The actuator assembly supplies pneumatic pressure to the opening mechanism of the valve assembly. The actuator assembly includes a tubular body including a cylindrical inner surface and presenting opposed first and second axial ends, wherein the first end is closed except for an orifice, and an elongated plunger including a first end provided with a piston head sized for receipt in the body in sealing engagement with the inner surface and a second end protruding beyond the second end of the body and accessible for manual operation. The plunger is movable in a first direction to create a positive pressure at the orifice, and in a second direction to create a negative pressure at the orifice. A hose connects the actuator assembly with the valve opening mechanism for conveying pneumatic pressure to the valve assembly so that manual actuation of the plunger creates a pneumatic pressure within the body that is conveyed to the valve assembly to open the valve.

Growing community of inventors

Overland Park, KS, United States of America

Charles A Palmer