AN9640: Glossary of Communication Terms
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APPLICATION NOTE AN9640 Rev 1.00 Glossary of Communication Terms December 1996 Introduction The following glossary of communication terms is provided Manufacturers Association as a quick reference to aid understanding of technical com- CC Cluster Controller munication literature. The list is a collection of terms that the CC (#) Country Code authors encountered in their work and is in no way a com- CCA † Clear Channel Assessment plete list. The Glossary of terms is preceded by a list of Acro- CCIR † Consultative Committee On International Radio nyms, some of which are included in the Glossary. CCITT Consultative Committee On International Telephone And Telegraph Acronyms CCS Common Channel Signaling CDMA Code Division Multiple Access AAL ATM Adaption Layer CDPD Cellular Digital Packet Data ACS Advanced Cellular System CELP Code-Excited Linear Predictive Coding ACI † Adjacent Channel Interference CEPT Conference Of European Postal And ADSL Asymmetrical Digital Subscriber Line Telecom Administration AGC † Automatic Gain Control CGSA Cellular Geographic Service Area ALT Alternate Local Transport Company CIC Cascaded Integrator Comb AM † Amplitude Modulation CMIP Common Management Information Protocol AMI Alternate Mark Inversion CMOS Complementary Metal Oxide Semiconductor AMPS Advanced Mobile Phone Service CO Central Office AMTA American Mobile Telecommunications CO switch † Central Office Switch Association COAX Coaxial Cable ANSI American National Standard Institute CODEC † Coder/Decoder AP (CO) Applications Processor CPE Customer Premises Equipment APC American Personal Communications CPFSK † Constant Phase Frequency Shift Keying ARPANET Advanced Research Project Agency CPS Characters Per Second Network CRC Cyclic Redundancy Check ART † Amplitude Radio Transmission CS † Carrier Sense ARQ Automatic Repeat Request CSA Canadian Standards Association ASCII American Standard Code For Information CSDN Circuit Switched Digital Network Interchange CSMA/CA Carrier Sense Multiple Access/Collision ASIC Application Specific Integrated Circuit Avoidance ASP Average Selling Price CSMA/CD Carrier Sense Multiple Access With ATG † Air-To-Ground Collision Detection ATM † Asynchronous Transfer Mode CSU Channel Service Unit AWG American Wire Gauge CT Cordless Telephone AWGN † Additive White Gaussian Noise CT1 Cordless Telephone - First Generation CT2 Cordless Telephone - Second Generation B-ISDN † Broadband ISDN CT3 Cordless Telephone - Third Generation BBS † Bulletin Board System CTIA Cellular Telecommunications Industry BCC Block Check Character Association BELLCORE Bell Communications Research CVBS † Composite Video Blanking Synchronization BER Bit Error Rate BFSK Binary Frequency-Shift Keying DAB Digital Audio Broadcasting BPDU † Burst Protocol Data Unit DACS Digital Access And Cross-Connect System BPF † Band Pass Filter DAN Desk Area Network BISYNC Binary Synchronous Communications DARPA Defense Advanced Research Projects BOC † Bell Operating Company Agency BPS † Bits Per Second dB Decibel BPSK Binary Phase-Shift Keying dBm Decibel Referencing 1 Milliwatt BRI Basic Rate Interface DBPSK † Differential Binary Phase Shift Key BSS † Broadcasting Satellite Service DBS Direct Broadcast From Satellite BTA Basic Trading Area DCE Data Circuit Terminating Equipment C-NETz German C System DCS † Digital Cellular Systems DCT 900 Ericsson’s Digital Cordless Telephone At C/I Carrier-To-Interference Ratio 900MHz CAD † Computer Aided Design DCT † Digital Cordless Telephone CAGR Compound Annual Growth Rate DDC † Digital Down Converter CAI Common Air Interface DDD Direct Distance Dial Network CAM † Computer Aided Manufacturing DDS Digital Dataphone Service CAP Competitive Access Provider DECT Digital European Cordless Telephone CAP (HDSL) Carrier-less AM/PM DEMUX Demultiplexing CBEMA † Computer And Business Equipment AN9640 Rev 1.00 Page 1 of 32 December 1996 Glossary of Communication Terms DIP † Dual-In-Line Package GSM Global System For Mobile Communications DNL † Differential Non Linearity GSO Geostationary Satellite Orbit DOC Dept. Of Communications HDLC High-Level Data Link Control DPI Dots Per Inch HDSL High Bit-Rate Digital Subscriber Line DPSK † Differential Phase Shift Keying HDX † Half-Duplex DPN Digital Packet Network HPF † High Pass Filter DQPSK † Differential Quadrature Phase Shift Key HSSI † High Speed Serial Interface DQT † Digital Quadrature Tuner HW † Hardware DS Direct Sequence Hz Cycles Per Second DSSS † Direct Sequence Spread Spectrum EC Interchange Carrier DS0 Digital Signal, Level 0 I DS1 Digital Signal, Level 1 IEEE Institute Of Electrical And Electronics DS2 Digital Signal, Level 2 Engineers DS3 Digital Signal, Level 3 IF † Intermediate Frequency IIP3 † Input Third Order Intercept Point DSI † Digital Speech Interpolation DSL Digital Subscriber Line IMASS Intelligent Multiple Access Spectrum Sharing DSP Digital Signal Processor IMD † Inter-Modulation Distortion DSU Digital Service Unit IMTS Improved Mobile Telephone Service IN Intelligent Network DSX † Digital Signal Cross-Counter DTE Data Terminal Equipment INL † Integral Non-Linearity DTMF Dual Tone Multi-Frequency INMARSAT The International Maritime Satellite Organization E-mail Electronic Mail INTELSAT International Telecommunications E-TDMA Enhanced TDMA Satellite Organization E.164 Numbering Plan For The ISDN ERA IP3 † Third Order Intercept Point EAMPS Expanded Amps IRAC Interagency Radio Advisory Committee EBCDIC Extended Binary Coded Decimal IS-54 EIA/TIA Interim Standard-54 Interchange Code ISDN Integrated Services Digital Network ECMA † European Computer Manufacturers ISI Intersymbol Interference Association ISM BAND Industrial Scientific and Medical band ECSA † Exchange Carrier Standards Association ISO International Organization For ED † Energy Detection Standardization EDSL Extended Digital Subscriber Line ITU International Telecommunications Union EIA † Electronic Industries Association JM † Jamming Margin ENOB † Effective Number Of Bits ESMR Enhanced Specialized Mobile Radio JPEG † Joint Photographic Experts Group ET Exchange Termination J-TACS Japanese TACS ETACS † Extended TACS kbps Kilobits Per Second ETSI † European Telecommunications Standards kHz Thousands Of Cycles Per Second Institute km Kilometer Euro ISDN Eurofile Transfer Standard For ISDN ksps † Kilo Samples Per Second FITL Fiber In The Loop LAN Local Area Network FAX Facsimile LAPB Link Access Procedure Balanced FCC Federal Communications Commission LAPD Link Access Procedure D FCS Frame Check Sequence LAPM Link Access Procedure For Modems FDDI Fiber Data Distributed Interface LATA Local Access Transport Area FDM Frequency Division Multiplexing LCM Line Concentrating Module FDMA Frequency Division Multiple Access LEC Local Exchange Carrier FDX Full Duplex LEO Low-Earth Orbit FEC Forward Error Correction LME † Layer Management Entity FEP Front End Processor LNA † Low Noise Amplifier FER † Frame Error Rate LNB † Low Noise Block FFS For Further Study LO † Local Oscillator FH Frequency Hopping LPC Linear Predictive Coding FHSS Frequency Hopping Spread Spectrum LPF † Low Pass Filter FIFO memory First-In, First-Out Memory LSB Least Significant Bit FM Frequency Modulation LT Line Termination FPLMTS Future Public Land Mobile Telecommunica- M13 Multiplexer DS1 To DS3 tions System MAC Media Access Control FSK † Frequency-Shift Keying MAU Media Access Unit And Multi-Station FT1 Fractional T1 Access Unit FTTC † Fiber To The Curb Mbps Megabits Per Second GAP Ground-To-Air Paging Mbits Megabits Gb/s Gigabits Per Second MDS Minimum Discernible Signal GCI General Communication Interface MEO Mid-Earth Orbit GFSK Gaussian Frequency-Shift Keying MF Multi-Frequency GP † Processing Gain MFJ Modified Final Judgment AN9640 Rev 1.00 Page 2 of 32 December 1996 Glossary of Communication Terms MFLOPS Millions Of Floating Point Instructions Per PDMA Phase Division Multiple Access Second PDN Public Data Network MIB † Management Information Base PDS Premises Distribution System MIPS Millions Of Instructions Per Second PDU † Protocol Data Unit MIRS Motorola Integrated Radio Systems PGA † Pin Grid Array (Package) MNP Micron Network Protocol PHS Personal Handyphone System MPDU † MAC Protocol Data Unit PHY † Physical Layer (Radio) MPEG † Motion Picture Experts Group PHY_DATA.REQ †MAC Requests To Sent Data To PHY MPT Ministry Of Posts And Telecommunications PHY_SAP † Physical Layer Service Access Point MQFP † Metric Quad Flat Pack (Packages) PL Private Line MSA Metropolitan Statistical Area PLCP † Physical Layer Convergence Protocol MSB Most Significant Bit PLL Phase Locked Loop MSC Mobile Services Switching Center PLME † PHY Layer Management Entity msec Milisecond PLMR Private Land Mobile Radio MSPS † Mega Samples Per Second PMD † Physical Medium Dependent MSS Mobile Satellite Service PMD_ANTSEL † MD Antenna Select MSK † Minimum Shift Keying PMD_FREQ † PMD Channel Frequency MTA Major Trading Area PMD_RATE † PMD Data Rate MTSO Mobile Telephone Switching Office PMD_SAP † Physical Medium Dependent Service MTX Mobile Telephone Exchange Access Point MUX Multiplexer PMR Public Mobile Radio N-ISDN Narrowband ISDN PN Pseudo-random Noise N-TACS Narrowband TACS PN CODE † Pseudo-random Noise Code NAMPS Narrowband Advanced Mobile Phone POP Point Of Presence Service POS † Point Of Sale NANP North American Numbering Plan POTS † Plain Old Telephone Service NCO † Numerically Controlled Oscillator PPDU † PHY Protocol Data Unit NCOM † Numerically Controlled Oscillator Modulator PPM † Pulse Position Modulation NFS Network File System PRA Primary Rate