Alpha numeric pager Pager store
But this can also be a disadvantage, since a message sent to a pager must be broadcast from every paging transmitter in the pager's service area. Alpha numeric pager. Alpha numeric pager
In the United States, pagers typically receive signals using the FLEX protocol in the 900MHz band. 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. 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. Many of today's pagers use the FLEX on-air protocol. This is convenient for many users, due to the widespread adoption of email; but email-based message submission methods do not usually provide any way to ensure that messages have been received by the paging work. It pre-dates mobile phone technology, being most popular during the 1980s and 1990s, but similarly uses radio transmissions to municate between a control/call center and the recipient. 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. On a smaller scale, pagers are sometimes carried by staff in medical establishments, allowing them to be summoned to emergencies. Other radio bands used for pagers include the 400MHz band, the VHF band, and the FM mercial broadcast band (88-108MHz). A pager is an electronic device used to contact people via a paging work. Alpha numeric pager. All text is available under the terms of the GNU Free Documentation License. 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. Many paging operators also support WCTP for sending and receiving messages from 1.5, 1.7 and two-way pagers. |
