Instant Messaging and Presence Protocol (IMPP)

HomePlug uses of a version of orthogonal frequency division multiplexing (OFDM) specially tailored for powerline environments. HomePlug 1.0 specifies 84 equally spaced subcarriers, within each of which several differential modulation techniques are employed. Security is through the 56-bit Data Encryption Standard (DES). See also Access BPL, bandwidth, BPL, broadband, DES, HomePlug, LAN, node, OFDM, PLC, and voltage.

• DCS 1800 (Digital Cellular System 1800)
• DCS 1800 (Digital Cellular System 1800)
• DCT (Discrete Cosine Transform)
• DCTE (Data Circuit Terminating Equipment)
• DDD (Direct Distance Dialing)
• DDN (Defense Data Network)
• DDS (Digital Data Service)
• decibel (dB)
• decibels per kilometer (dB/km)
• decimal notation
• DECT (Digital Enhanced Cordless Telecommunications)
• dedicated circuit
• dedicated circuit
• dedicated circuit
• DE (Discard Eligible)
• de facto
• Defense Advanced Research Project Agency Network (DARPANET)
• Defense Data Network (DDN)
• de jure
• delay
• delay skew
• delay spread
• delta modulation
• demand assigned multiple access (DAMA)
• demarcation point