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Fire pager tone The paged party then had to telephone the control/call centre to collect the message either from an operator or an early voice mail device. In this use, they can be thought of as a modern equivalent of maroon rockets. Pagers usually have very simple ring tones and some include a vibrating alert. Since a one-way pager is a passive receiver only (it sends no rmation back to the base station), its location cannot be tracked. Other radio bands used for pagers include the 400MHz band, the VHF band, and the FM mercial broadcast band (88-108MHz). This can result in pager messages being delayed or lost. Even more recent models included the ability to send messages in a two-way fashion and even included the ability to send and receive email. Early pagers only provided an audio notification, such as a series of bleeps, to indicate reception of a page. Fire pager tone. Even more recent models included the ability to send messages in a two-way fashion and even included the ability to send and receive email. Thus, if a pager has nationwide service, a message sent to it could be intercepted by criminals or law enforcement agencies anywhere within the nationwide service area. Fire pager tone. Pager alert
Thus, if a pager has nationwide service, a message sent to it could be intercepted by criminals or law enforcement agencies anywhere within the nationwide service area. For this reason, older forms of message submission retain their usefulness for disseminating highly-important alerts to users such as emergency services personnel. Pagers using the mercial FM band receive a subcarrier, called the Subsidiary Communications Authority, of a broadcast station. Many of today's pagers use the FLEX on-air protocol. This is especially critical in hospital settings where emergency staff must be able to reliably receive pages in order to respond to patient needs. |
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