WiFi hazardous area VoIP paging telephone and system
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United States of America Patent
Stats
-
May 24, 2016
Grant Date -
Mar 5, 2015
app pub date -
Aug 28, 2014
filing date -
Aug 30, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
VoIP-based telephone is provided with integral paging amplifier and a WiFi antenna, and is designed for hazardous areas such as UL Class I, Division 1, Division 2 and IEC Ex including the WiFi antenna. A system of VoIP-based telephone units supports multicast to provide prioritized and loudspeaker-zoned paging. The integral 30-watt class D amplifier in the telephone units provides sufficient volume for paging and ringing to be reliably detected by personnel in hazardous locations. Upon lifting the handset, the telephone unit can automatically revert to standard VoIP telephone operation. The telephones can be powered via DC, AC or with Power over Ethernet (POE).
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Family
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