Redundancy Concepts of the IP Public Address Unit

The permanent availability of critical devices is crucial when initiating alarms or voice announcements in emergency situations. The IP PA unit of the NPA series is especially designed to deal with this requirement. It offers intelligent backup control enabling component redundancy for the amplifier modules and the power supply unit – all in one device. […]

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UPGRADES! Opportunity – Progress – Safety

For several years now, it has become clear that digital communication, e.g. via ISDN, is increasingly being overtaken by new technologies such as IP. The circuit-based communication protocols (cable between the terminal device and the central exchange unit) are thus replaced by packet-based protocols. The advantage of this new type of communication lies in the variety of […]

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Intercom and PA/GA

You’ve surely heard of intercom systems and PA/GA systems. But how are they exactly defined? And what are the differences? This article compares both concepts and focuses on the main differences. Intercom Intercom systems are mainly used to support process-related voice communication in industrial environments. You have either a pre-defined subscriber to which you establish […]

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