Basic Exchange Telephone Radio Service
Encyclopedia
The Basic Exchange Telephone Radio Service or BETRS is a fixed radio
service where a multiplexed
, digital radio
link is used as the last segment of the local loop
to provide wireless
telephone
service to subscribers in remote areas. BETRS technology was developed in the mid-1980s and allows up to four subscribers to use a single radio channel
pair, simultaneous
ly, without interfering
with one another.
In the U.S.
, this service may operate in the paired 152/158 and 454/459 MHz bands and on 10 channel blocks in the 816-820/861-865 MHz bands. BETRS may be licensed only to state
-certified carriers in the area where the service is provided and is considered a part of the public switched telephone network
(PSTN) by state regulators.
Regulation of this service currently resides in parts 1 and 22 of the Code of Federal Regulations
(CFR), Subtitle 47 on Telecommunications, and may be researched or ordered through the Government Printing Office (GPO).
Source: Federal Communications Commission
(Wireless Bureau)
Radio
Radio is the transmission of signals through free space by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space...
service where a multiplexed
Multiplexing
The multiplexed signal is transmitted over a communication channel, which may be a physical transmission medium. The multiplexing divides the capacity of the low-level communication channel into several higher-level logical channels, one for each message signal or data stream to be transferred...
, digital radio
Digital radio
Digital radio has several meanings:1. Today the most common meaning is digital radio broadcasting technologies, such as the digital audio broadcasting system, also known as Eureka 147. In these systems, the analog audio signal is digitized into zeros and ones, compressed using formats such as...
link is used as the last segment of the local loop
Local loop
In telephony, the local loop is the physical link or circuit that connects from the demarcation point of the customer premises to the edge of the carrier or telecommunications service provider's network...
to provide wireless
Wireless
Wireless telecommunications is the transfer of information between two or more points that are not physically connected. Distances can be short, such as a few meters for television remote control, or as far as thousands or even millions of kilometers for deep-space radio communications...
telephone
Telephone
The telephone , colloquially referred to as a phone, is a telecommunications device that transmits and receives sounds, usually the human voice. Telephones are a point-to-point communication system whose most basic function is to allow two people separated by large distances to talk to each other...
service to subscribers in remote areas. BETRS technology was developed in the mid-1980s and allows up to four subscribers to use a single radio channel
Channel (communications)
In telecommunications and computer networking, a communication channel, or channel, refers either to a physical transmission medium such as a wire, or to a logical connection over a multiplexed medium such as a radio channel...
pair, simultaneous
Simultaneity
Simultaneity is the property of two events happening at the same time in at least one frame of reference. The word derives from the Latin simul, at the same time plus the suffix -taneous, abstracted from spontaneous .The noun simult means a supernatural coincidence, two or more divinely...
ly, without interfering
Interference (communication)
In communications and electronics, especially in telecommunications, interference is anything which alters, modifies, or disrupts a signal as it travels along a channel between a source and a receiver. The term typically refers to the addition of unwanted signals to a useful signal...
with one another.
In the U.S.
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
, this service may operate in the paired 152/158 and 454/459 MHz bands and on 10 channel blocks in the 816-820/861-865 MHz bands. BETRS may be licensed only to state
U.S. state
A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...
-certified carriers in the area where the service is provided and is considered a part of the public switched telephone network
Public switched telephone network
The public switched telephone network is the network of the world's public circuit-switched telephone networks. It consists of telephone lines, fiber optic cables, microwave transmission links, cellular networks, communications satellites, and undersea telephone cables, all inter-connected by...
(PSTN) by state regulators.
Regulation of this service currently resides in parts 1 and 22 of the Code of Federal Regulations
Code of Federal Regulations
The Code of Federal Regulations is the codification of the general and permanent rules and regulations published in the Federal Register by the executive departments and agencies of the Federal Government of the United States.The CFR is published by the Office of the Federal Register, an agency...
(CFR), Subtitle 47 on Telecommunications, and may be researched or ordered through the Government Printing Office (GPO).
Source: Federal Communications Commission
Federal Communications Commission
The Federal Communications Commission is an independent agency of the United States government, created, Congressional statute , and with the majority of its commissioners appointed by the current President. The FCC works towards six goals in the areas of broadband, competition, the spectrum, the...
(Wireless Bureau)