| Term | Description |
D-AMPS | D-AMPS - Digital AMPS, a US wireless standard also known as IS-136
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D/A | D/A - Digital to Analogue conversion
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DAC | DAC - Digital to Analogue Convertor
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DAMA | DAMA - Demand Assigned Multiple Access
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DAN | DAN - DECT Access Node
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Data capable | Data capable - Mobile phones which have the capability to enable transmission of data from a laptop computer or PDA via the phone
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DB | DB - Dummy Burst; transmitted as a filler in unused timeslots of the carrier
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DCA | DCA - Dynamic Channel Assignment
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DCCH | DCCH - Dedicated Control Channels; responsible for roaming, handovers, encryption etc. (See SDCCH, SACCH and FACCH)
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DCE | DCE - Data Communications Equipment
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DCH | DCH - Data Clearing House
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DCPSK | DCPSK - Differentially Coherent Phase Shift Keying
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DCS1800 | DCS1800 - Digital Cellular System at 1800MHz, now known as GSM1800
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DECT | DECT - Digitally Enhanced Cordless Telecommunications system, a second generation digital cordless technology standardised by ETSI
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DEPSK | DEPSK - Differential Encoded Phase Shift Keying
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DES | DES - Digital Encryption Standard
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DFSK | DFSK - Double Frequency Shift Keying
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Digital | Digital - a method of representing information as numbers with discrete values; usually expressed as a sequence of bits
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DPCM | DPCM - Differential Pulse Code Modulation
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DPSK | DPSK - Digital Phase Shift Keying
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DQPSK | DQPSK - Digital Quadrature Phase Shift Keying
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DS-CDMA | DS-CDMA - Direct Sequence CDMA
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DSP | DSP - Digital Signal Processing
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DSRR | DSRR - Digital Short Range Radio; a UK standard for a low power, short range radio system designed for small voice and data networks
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DTE | DTE - Data Terminal Equipment
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DTMF | 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
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DTX | DTX - Discontinuous Transmission
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Dual Band | 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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Dual-band | Dual-band - Phones that can switch between two different bands of frequencies.In Europe Dual-band usually means GSM900/GSM1800 capable phone, while in USA it might mean GSM850/GSM1900 or combination of two other bands.
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Duplex | Duplex - The wireless technique where one frequency band is used for traffic from the network to the subscriber (the downlink) and another, widely separated, band is used for traffic from the subscriber to the network (the uplink)
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