The energy and heat industries use wireless communication systems because they are economical and they are quickly and easily installed. They are mostly used for the monitoring/supervising and control of various technological devices. A high level of reliability is necessary. Wireless connections may also serve as a backup system in the case of a failure of the fixed/permanent communication lines. Heat distribution industries use wireless data transfer for their heat distribution systems – SCADA systems provides them with data collections and with the management of transfer stations, or they are used to collect data Modems from heat measuring instruments (heat meters).
Companies operating telecommunications networks (mobile/fixed operators, Internet providers, private network providers) increasingly offer installation of connections from anywhere. Where a fixed connection cannot be built, it is best to use 3G mobile (UMTS) networks. Operators often guarantee the availability of services and therefore fixed lines are being backed up by independent mobile GSM / 3G network.
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