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This paper proposes a hybrid infrastructure construction of multi-functions digital public address (PA) system, which consists of wired and wireless communications architecture. Wireless communications ability can be achieved by dedicated USB dongles such as WiFi, WiMax, 3G, and LTE. Wireless communication can be used for disaster areas or some regions where is difficult to install wired-based PA...
This paper introduces a multi-functions digital public address (PA) broadcasting system, called WMP-2100, which is a complete all-in-one solution, not only could it broadcast by single zone and groups, it could also be connected to PSTN to make telephone broadcast. In addition, WMP-2100 could expand the system for emergency call, burglar control and two-way intercom. Moreover, the WMP-2100 includes...
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