Cell Phones Glossary
Technology / Cell Phones Glossary
Competitive Local Exchange Carrier (CLEC): Any telephone company that offers service in a specific area. Now that the industry has been deregulated, several companies may offer service in a single area. New ones entering a market are . . . View Full Definition
Content Services: Paging service, beyond telephone number alerts, that include news and sports headlines, personalized stock quotes, driving directions, restaurant reviews and information contained on Internet sites.
Control Channel: A logic channel carrying network information rather than the actual voice or data messages transmitted over the network.
Coverage: Refers to the region within which a paging receiver can reliably receive the transmission of the paging signals.
Crosstalk: Interference in a wireless communications system from other conversations in nearby cells using the same channel.
Customer Acquisition Cost: The average cost to a carrier of signing up an individual subscriber. Some of the factors included in the cost are handset subsidies, marketing, advertising and promotions.
D and E PCS Blocks: The fourth and fifth PCS licenses that were auctioned by the FCC in January 1997. Each contains MHz of spectrum in the 1900 MHz band and is based on BTA geographical partitions. The licenses . . . View Full Definition
Decibel (dB): A unit of measure used to express relative difference in power or intensity of sound.
Digital: A method of encoding information using a binary code of 0s and 1s from electrical pulses. Because digital signals are made up only of binary streams, less information is needed to transmit a . . . View Full Definition
Digital Cellular System (DCS 1800): A global system for mobile communications-based PCS network used outside of the U.S.
Digital Signal Processor (DSP): A microprocessor that digitizes analog signals.
Disaggregation: The splitting of a spectrum license into two or more licenses of fewer frequencies.
Downlink: The portion of a telecommunications path from a satellite to the ground. Also referred to as the reverse link.
Drive Test: A method of taking signal strength measurements in a cellular coverage area.
Dual Band: A feature on some wireless phones that allows the handset to operate using either the 800 MHz cellular or the 1900 MHz PCS frequencies.
Dual Mode: A feature on some wireless phones that allows the handset to operate on both analog and digital networks.
Electromagnetic Energy: Waves of electrical and magnetic energy moving together through space. Also called electromagnetic radiation.
Electromagnetic Field: An area containing electromagnetic energy (electromagnetic radiation).
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