Acronyms Compiled - Telecommunication 1G -- 2G -- 3G -- Data, Voice, Video 4G -- Voice as data, shared speeds of 100 Mbps 5G -- Voidce as data, shared speeds of 10,000 Mbps ADSL -- Asymmetric Digital Subscriber Line ARP -- Address Resolution Protocol (Layer 3) AK -- Amplitude Shift Keying AM -- Amplitude Modulation AT -- ATtention (Hayes Modems Command Prefix) ATM -- Asynchronous Transfer Mode BER -- Bit Error Rate BPSK -- Binary Phase Shift Keying CD -- Carrier Detect (V24) CDM -- Code Disvision Multiplexing CDMA -- Code Disvision Multiple Access CMRR -- Common Mode Rejection Rate CSMA/CD -- Carrier Sense with Multiple Access/Collision Detection (Ethernet IEEE 802.3) CSP - Cloud Service Provider CTS -- Clear To Send DAB -- Digital Audio Broadcasting DAT -- Digital Audio Tape DCE -- Data Circuit-terminating Equipment DDCMP -- Digital Data Communications Message Protocol (DEC) DHCP - Dynamic Host Configuration Protocol DFSK -- Double Frequency Shift Keying DLC -- Data Link Control (sub-layer 2) DLE -- Data Link Escape (char 16 - 10H)) DNS -- Domain Name System (Internet ) DPSK -- Differential Phase Shift Keying DQPSK -- Differential Quaternary Phase Shift Keying DSL -- Digital Subscriber Line DSLAM -- Digital Subscriber Line Access Multiplexer DSP -- Digital Signal Processor DTE -- Data Terminal Equipment DTMF -- Dual Tone MultiFrequency (signalling) DTR -- Data Terminal Ready EBCDIC -- Extended Binary Coded Decimal Interchange Code (IBM) EoA -- Ethernet over ADSL EoC -- Ethernet over Coax EOF -- End Of File EOF -- End Of Frame EOP -- End Of Packet EOT -- End Of Transmission (char 4 - 04H) ESC -- ESCape (char 027 - 1BH) ETB -- End of Text Block (char 023 - 17H) ETX -- End of TeXt (char 3 - 03H) FAX -- FAcsimile FCS -- Frame Check Sequence FDDI -- Fiber Distributed Data Interface (ISO 9314) FDM -- Frequency Division Multiplex FDX -- Full DupleX FFT -- Fast Fourier Transform FM -- Frequency Modulation FSK -- Frequency Shift Keying FTP -- File Transfer Protocol FTTB -- Fibre to the Box FTTC -- Fiber To The Curb FTTH -- Fiber To The Home FTTN -- Fibre to the Node FTTP - Fibre to the Premisses GEO -- Geosynchronous Earth Orbit GPIB -- General Purpose Instruments Bus (HP-IB, IEEE-488) GPS -- Global Positioning System GSM -- Global Standard for Mobile HDLC -- High level Data Link Control (IBM, Layer 2) (ISO 4335) HDSL -- High rate Digital Subscriber Loop (Line?) HDX -- Half DupleX HF -- High Frequency HERF -- High Energy Radio Frequency HFC -- Hybrid Fiber/Coaxial network HP-IB -- Hewlett Packard Instrument Bus (GPIB) Hue Saturation Value (color) HT -- Horizontal Tab (TAB, char 09 - 09H) ICMP -- Internet Control Message Protocol ICP -- Internet Content Provider (i.e Netflix) ICT - Information and Communication Technology IMAP -- Internet Message Access Protocol IoT -- Internet of Things IP -- Internetwork Protocol (layer 3) IPv6 -- Internet Protocol Version 6 IPX -- Internet Packet Exchange (Netware, layer 3) ISO -- International Standards Organization ISP -- Internet Service Provider ISDN -- Integrated Services Data Network LAN -- Local Area Network LAP -- Link Access Procedure LAP-B -- Link Access Procedure, Balanced (Multilink operation procedure, X25) LAP-D -- Link Access Procedure, D Channel LAP-M -- Link Access Procedure for Modems LEO -- Low Earth Orbit lnb -- Low Noise Block LPC -- Linear Predictive Coding LTE -- Long Term Evolution MAC -- Media Access Control (sub-layer 2) MFA -- Multi-Factor Authentication MEO -- Medium Earth Orbit MNO -- Mobile Network Operator MODEM - Modulator - Demodulator OSI - Open Systems Interconnection Model M2M -- Machine to Machine NBN -- National Broadband Network NCP -- Network Control Protocol (IBM) NF -- Noise Figure NRZ -- Non Return to Zero NRZI -- Non Return to Zero Inverted ODI -- Open Data-Link Interface (Netware) OQPSK -- Offset Quad Phone Shift Keying PAM -- Pulse Amplitude Modulation P2P -- Point to Point PABX -- Private Automatic Branch eXchange PAD -- Packet Assembler Disassembler (X.3,X.25) PBX -- Private Branch eXchange PCM -- Pulse Code Modulation POP -- Post Office Protocol (RFC 1125) POTS - Plain Old Telephone Service PPPoE -- Point to Point Protocol over Ethernet PSDN -- Packet Switched Data Network PSK -- Phase Shift Keying PSTN - Public Switched Telephone Network PTM -- Pulse Time Modulation PV -- Photo Voltaic PWM -- Pulsed Wave Modulation PWM -- Pulse-Width Modulation QAM -- Quadrature Amplitude Modulation QoS -- Quality of Service QPSK -- Quadrature/Quaternary Phase Shift Keying RF -- Radio Frequency RS -- Recommended Standard (EIA) RTD - Round Trip Delay RTS - Request to Send RX -- Reception RXD -- Received Data SCADA -- Supervisory Control And Data Acquisition SDLC -- Synchronous Data Link Control SDMA -- Space Division Multiple Acce SDN -- Software Defined Networking SIP -- Session Initiation Protocol SMTP -- Simple Message Transfer Protocol (Internet - RFC 822) SNAP -- Sub-Network Access Protocol SNMP -- Simple Network Management Protocol SNR -- Signal to Noise Ratio (S/N) SOH -- Start Of Header (char 01 - 01H) SPX -- Sequenced Packet Exchange (layer 4, Netware) SSH -- Secure Shell SxS -- Step by Step Telephone Exchange T1 -- Trunk 1 (1544 bps, 24-channel PCM) T3 -- Trunk 3 (44.736 Mb/s) TCP -- Transmission Control Protocol (layer 4) TCP/IP -- Transmission Control Protocol/Internet Protocol TDM -- Time Division Multiplexing TDMA -- Time Division Multiple Access TDR -- Time Domain Reflectometry TIA -- Telecommunications Industries Association TXD -- Transmitted Data UDP -- User Datagram Protocol (layer 4) UHF -- Ultra High Frequency (300-3000 MHz) UMTS -- Universal Mobile Telecommunications System UTP -- Unshielded Twisted Pair (Ethernet) UUCP -- Unix to Unix Copy Protocol VC -- Virtual Circuit VDSL -- Very-high-rate Digital Subscriber Line VF -- Voice Frequency VHF -- Very High Frequency (30-300 MHz) VM -- Virtual Machine VoIP -- Voice over IP VoP -- Voice over Packet VSB -- Vestigial Side Band WAN -- Wide Area Networks WLAN -- Wide Local Area Network =-=-=-=-= Columbia University https://www.cs.columbia.edu/~hgs/acronyms/f.html 100+ Telecom Acronyms You Should Know https://www2.telegeography.com/telecom-acronyms https://www.kslegislature.org/li_2014/b2013_14/committees/misc/ctte_h_utilities_and_telecommunications_1_20130130_10_other.pdf 20 pg https://mixnetworks.com/terminology-dictionary/ https://itel.com/telecom-acronyms-glossary/