Cellular Definitions (D)


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DAC

Digital to Analogue Convertor

D-AMPS

Digital AMPS, a US wireless standard also known as IS-136

DCCH

Dedicated Control Channels; responsible for roaming, handovers, encryption etc. (See SDCCH, SACCH and FACCH)

DCS1800

Digital Cellular System at 1800MHz, now known as GSM1800

DECT

Digitally Enhanced Cordless Telecommunications system, a second generation digital cordless technology standardised by ETSI

DES

Digital Encryption Standard

Digital

a method of representing information as numbers with discrete values; usually expressed as a sequence of bits

DPCM

Differential Pulse Code Modulation

DS-CDMA

Direct Sequence CDMA

DSP

Digital Signal Processing

DSRR

Digital Short Range Radio; a UK standard for a low power, short range radio system designed for small voice and data networks

DTMF

Dual Tone MultiFrequency; better know as Touch Tone. The tones generated by touching the keys on the phone are used for a variety of purposes including voice mail systems and voice messaging

DAC

Digital to Analogue Convertor

DCS1800

Digital Cellular System at 1800MHz, now known as GSM1800

DPCM

Differential Pulse Code Modulation

DS-CDMA

Direct Sequence CDMA

Dual Band

The capability of GSM infrastructure elements and handsets to work across both the 900MHz and 1800MHz bands. The capability to seamlessly handover between the two bands offers operators major capacity gains

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