Sierra Wireless AirLink RV50 Series, Hardware User'S Manual, Page: 71 / 78

Rev 3 Dec.16 71
B
B: Acronyms
Table B-1: Acronyms
Acronym or term Definition
3GPP 3
rd
Generation Partnership Project
3GPP unites 6 telecommunications standard development organizations (ARIB,
ATIS, CCSA, ETSI, TTA, TTC), and provides their members with a stable
environment to produce Reports and Specifications that define 3GPP technologies.
API Application Programming Interface
A protocol intended to be used as an interface by software components to
communicate with each other.
AT A set of device commands, preceded by “AT” originally developed by Hayes, Inc. for
their devices.
The structure (but not the specific commands, that vary greatly from manufacturer to
manufacturer) is a de facto device industry standard.
CE, CE label The CE label is a mandatory conformity marking for products placed on the market in
the European Economic Area (EEA).
With the CE marking on a product, the manufacturer declares that the product
conforms with the essential requirements of the applicable EC directives.
DCE Data Communications Equipment
A device that sits between the data terminal equipment (DTE) and a data
transmission circuit. Usually the DCE is a modem.
Diversity Antenna diversity, also called space diversity, is a scheme that uses two or more
antennas to improve the quality and reliability of a wireless link.
Often, especially in urban and indoor environments, there is no clear line-of-sight
(LOS) between transmitter and receiver. Instead the signal is reflected along multiple
paths before finally being received. Each bounce can introduce phase shifts, time
delays, attenuations, and distortions that can destructively interfere with one another
at the aperture of the receiving antenna.
EDGE Enhanced Data rates for GSM Evolution
A digital mobile phone technology that allows improved data transmission rates as a
backward-compatible extension of GSM. EDGE is considered a pre-3G radio
technology and is part of ITU's 3G definition.
Also known as Enhanced GPRS (EGPRS), or IMT Single Carrier (IMT-SC), or
Enhanced Data rates for Global Evolution.