Verizon wireless pager Pagers usually have very simple ring tones and some include a vibrating alert. For this reason, older forms of message submission retain their usefulness for disseminating highly-important alerts to users such as emergency services personnel. Although 900MHz FLEX paging works tend to have stronger in-building coverage than mobile phone works, mercial paging service providers will work with large institutions to install repeater equipment in the event that service is not available in needed areas of the subscribing institution's buildings. Commercial paging transmitters typically radiate 1000 watts of effective power, resulting in a much wider coverage area per tower than a mobile phone transmitter, which typically radiates in the neighborhood of 0.6 Watt per channel. 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. All text is available under the terms of the GNU Free Documentation License. Verizon wireless pager. Since a one-way pager is a passive receiver only (it sends no rmation back to the base station), its location cannot be tracked. 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. Later pagers used digital messages, first numeric and later alphanumeric, to provide the recipient with more rmation. Many paging work operators now allow numeric and textual pages to be submitted to the paging works via email. The slower POCSAG on-air protocol is still used for some pagers in the United States and probably in other countries. 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. Other paging protocols used in the VHF, 400MHz UHF, and 900MHz bands include POCSAG and ERMES. The slower POCSAG on-air protocol is still used for some pagers in the United States and probably in other countries. Pagers remain in use to notify part-time emergency personnel. |
