PA system

WMT PA systems

Wireless mobile telephony (WMT) PA systems are PA paging and intercom systems that use any form of wireless mobile telephony system such as GSM networks instead of a centralized amplifier to distribute the audio signal to paging locations across a building or campus, or other location. The GSM mobile networks are used to provide the communication function. At the transmission end, a PSTN Telephone, mobile phone, VOIP phone or any other communication device that can access and make audio calls to a GSM-based mobile SIM card can communicate with it. At the receiving end, a GSM transceiver receives these network transmissions and reproduces the analogue audio signal via a Power Amplifier and speaker. This was pioneered by Stephen Robert Pearson of Lancashire, England who was granted patents for the systems, which also incorporate control functionality. Using a WMT (GSM) network means that live announcements can be made to anywhere in the world where there is WMT connectivity. The patents cover all forms of WMT i.e., 2G, 3G, 4G ..... ××G. A UK company called Remvox Ltd (Remote Voice experience) has been appointed under license to develop and manufacture products based on the technology.