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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