Hubbell Limited

Alec Mercer

Jeff T Reid

Keith Youndt

Philip Gregory Brown

An audio bridge unit is provided for connecting a conventional analog page/party station in an analog page/party system to IP-based page/party stations that employ multicast Voice over Internet Protocol (VoIP) technology to support page/party communications between analog page/party stations and the VoIP page/party stations. The audio bridge unit converts page and/or party audio line(s) to multicast channel(s). The audio bridge unit analog interfaces for its respective page and/or party lines, and each analog interface is assigned to an independent multicast channel on which it will transmit and receive full duplex audio between an analog page/party station and one or more IP-based page/party stations. The audio bridge unit provides the ability to configure the multicast group, port and Time to Live (TTL) setting for each of the analog channels associated with the page and/or party lines.

Method and apparatus for interfacing analog page party system to internet protocol page party system

System and method for monitoring electrical devices such as luminaires, including ballast and/or battery powered lighting components, for variety of fault conditions from central location utilize monitoring unit that interfaces with host lighting fixture or luminaire to allow status of host to be remotely monitored. Monitoring unit can interface with host in fully galvanically isolated manner using current transformers allowing host lighting fixture to be monitored in the least intrusive manner. Monitoring unit can be seamlessly fitted to new luminaires or existing luminaires. Current transformer interface has minimal effect on host ballast functionality and operation. Monitoring system may include a plurality of monitoring units multi-dropped on a single field bus network or in a power line communication. Power for monitoring unit can be derived from field bus network or power line. Operating parameters and addressing information of monitoring unit may be configured via interface using laptop or PC.

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New Holland, PA, United States of America

Alec Mercer