| DA | 
            Destination Address | 
          
          
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            | DCS | 
            Data Coding Scheme | 
          
          
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            | DCS1800  | 
            Digital Cellular (1800Mhz) | 
          
          
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            | Deck | 
            A collection of WML cards. A WML deck is
            also an XML document. | 
          
          
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            | DECT | 
            Digital Enhanced Cordless Telephony is a
            European cordless telephone standard. Designed for wireless PABX connections, this
            provides voice and data services using TDMA techniques. | 
          
          
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            | Device | 
            Network entity capable of sending and
            receiving packets of information and has a unique device address. | 
          
          
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            | DFP | 
            Distributed Functional Plane | 
          
          
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            | DI | 
            Dialogue Identifier TCAP | 
          
          
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            | Dispatch Radio | 
            Two way radio used for taxis, trucks and
            fleets. Always on.  | 
          
          
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            | DP | 
            Detection Point | 
          
          
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            | DSL | 
            Distributed Service Logic | 
          
          
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            | DSS1 | 
            Digital Subscriber Signalling No.1 protocol | 
          
          
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            | DTMF | 
            Dual Tone Multi-Frequency | 
          
          
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            | Dual Mode Handset | 
            Cellphone that switches from analog to
            digital or from land based to satellite or from cordless to cellular. |