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Glossary

"2G"
"3G"
"3GPP"
"4G"
"5G"
""
"AAMF Access and Mobility Management Function "
"AAT"
"ACLR"
"ACP"
“ACPR”
"ADD/DROP"
"Add/Drop Multiplexer (ADM)"
"ADSL (Full Rate Asymmetrical DSL) "
"AIS (Alarm Indication Signal)"
"AM Distortion"
"AM/PM Distortion"
"Amplifier "
"Amplitude Modulation (AM)"
"ANSI (American National Standards Institute"
"Antenna Reciprocity"
"Area Networks"
"Asynchronous Replication"
"Asynchronous Serial Interface (ASI)"
"Asynchronous Transfer Mode (ATM)"
"Asynchronous Transmission "
"ATM Adaptation Layer 1 Circuit Emulation"
"ATM Adaptation Layer 2 Transport (AAL2) "
"ATM Adaptation Layer 5 (AAL5)"
"ATM Adaptation Layer (AAL)"
"ATM Service Access Multiplexer (ATM SAM)"
"Attenuation Limited Operation"
"AUSF Authentication Server Function"
"Automatically Switched Optical Network (ASON)"
"Automatically Switched Transport Network (ASTN) "
"Availability"
"AWG "
"Backbone "
"Backhaul "
"Backup "
"Backup Window"
"Bandwidth"
"Base Station Network Emulator"
"BBU Baseband Unit"
"Beam Acquisition"
"Beam Steering"
"Beamforming"
"Best Effort "
"Bit Error Rate (BER)"
"Bits Per Second (b/ps)"
"Block"
"Broadband"
"Buffer"
"C-RAN"
"CA Carrier Aggregation"
"Cable Modem"
"Cable Modem Termination System (CMTS) "
"Carrier"
"Category 5 Cable (CAT 5)"
"CATR "
"CE Channel Emulator"
"Cell Tower"
"Central Office (CO) "
"Channel "
"Chromatic Dispersion"
"CIR Channel Impulse Response"
"Circuit"
"Class of Service (CoS)"
"Client "
"Coarse Wavelength Division Multiplexing (CWDM)"
"COFDM "
"Collocation"
"Common Language Equipment Identification (CLEI)"
"Common Language Location Identifier (CLLI)"
"CoMP Coordinated Multipoint"
"Compression"
"Concatenation"
"Control Plane"
"Core Network "
"CP-OFDM Cyclic Prefix Orthogonal Frequency Division Multiplexing "
"CPE Common Phase Error "
"CPE Customer Premise Equipment "
"CPRI Common Public Radio Interface"
"CRS Cell-Specific Reference Signal "
"CSI Channel State Information"
"CUPS Control User Plane Separation"
"DAB - Digital Audio Broadcasting"
"Data Communications Equipment (DCE)"
"Data-over-Cable Service Interface Specification (DoCSIS) "
"Data Plane "
"Data Rate"
"Data Terminating Equipment (DTE) "
"Decibel (dB) "
"Degrade"
"Demultiplexing"
"Dense Wavelength Division Multiplexing (DWDM)"
"Deregulation"
"DFF – Direct Far Field"
"DFT-s-OFDM "
"Digital Cross Connect System (DCS)"
"Digital Signal 3 (DS3) "
"Digital Subscriber Line (DSL)"
"Digital Wrapper"
"Disaster Recovery (DR)"
"Dispersion"
"DL Downlink"
"DMB - Digital Multimedia Broadcasting"
"Dual Link"
"DUT Device Under Test"
"E-UTRAN – Evolved UMTS Terrestrial Radio Access Network"
"E1"
"EIRP Effective Isotropic Radiated Power"
"Element Management System (EMS)"
"eLTE eNB "
"eMBB Enhanced Mobile "
"EN-DC – E-UTRAN New Radio – Dual Connectivity"
"eNB – Evolved Node B or eNodeB"
"Enterprise Systems"
"EPC – Evolved Packet Core "
"EPIC - Electronic Information Privacy Organization"
"EPS – Evolved Packet System "
"Erbium Doped Fiber Amplifier (EDFA)"
"Errored Seconds (ES) "
"ERTA – Extended Range Transmission Analysis"
"Ethernet "
"Ethernet (2) "
"ETRI"
"ETSI "
"EV-DO - Evolution Data Optimized "
"EVM – Error Vector Magnitude"
"FBMC "
"FD-MIMO – Full Dimension MIMO"
"FDD"
"Fiber Channel "
"Fiber In The Loop (FITL)"
"Fiber Optic Cable "
"Fiber-to-the-Building (FTTB) "
"Fiber-to-the-Cabinet (FTTCab)"
"Fiber-to-the-Curb (FTTC) "
"Fiber-to-the-Exchange (FTTEx) "
"Fiber-to-the-Home (FTTH) or Fiber-to-the-Premises (FTTP) "
"Fiber-to-the-Node/Neighborhood (FTTN) "
"Fiber-to-the-Premises (FTTP) or Fiber-to-the-Home (FTTH)"
"Fiber-to-the-x (FTTX)"
"Fibre Channel "
"Fibre Connect (FICON) "
"Forward Error Correction (FEC) "
"FPY – First Pass Yield"
"FR1 – Frequency Range 1"
"FR2 – Frequency Range 2"
"Frame Relay "
"Frequency"
"Fronthaul "
"FWA Fixed Wireless Access"
"G-Series Automatic Switched Optical Network (G.ASON)"
"GCF Global Certification Forum "
"Generalized Multi-Protocol Label Switching (GMPLS)"
"GHz- Gigahertz"
"Gigabit Ethernet (GbE)"
"Gigabit Interface Converter (GBIC) "
"Gigabits Per Second (Gb/s or Gbps)"
"gNB – gNodeB"
"GPRS – General Packet Radio Services"
"GSM - Global System for Mobile Communications"
"Harmonic"
"HD – Half Duplex "
"High-Definition Serial Digital Interface (HD-SDI) "
"High-Definition Television (HDTV) "
"Hot Swap "
"HSS – Home Subscriber Server"
"Hub "
"Hybrid Fiber Coaxial (HFC)"
"ICI – Intercarrier Interference"
"ICT - Information and Communication Technologies"
"IEC "
"IEEE "
"IFBW – Intermediate Frequency Bandwidth"
"IFF – Indirect Far Field"
"IMEI – International Mobile Equipment Identity "
"IMS - IP Multimedia Subsystem"
"IMSI – International Mobile Subscriber Identity "
"IMT-2020 "
"In-band (transmission) Transmission "
"Information Technology (IT) "
"Infrastructure "
"Interexchange Carrier (IXC)"
"International Telecommunication Union (ITU) "
"Internet Group Management Protocol (IGMP)"
"Internet Protocol (IP) "
"Internet Protocol Television (IPTV) "
"Internet Protocol Version 6 (IPv6)"
"Internet Small Computer Systems Interface (iSCSI) "
"ISI – Intersymbol Interference "
"ITU – International Telecommunication Union"
"Jitter "
"KPIs – Key Performance Indicators "
"LAN-Free Backup"
"LASER (Light Amplification by Stimulated Emission of Radiation) "
"Latency"
"Layer 1"
"Layers 2, 3 "
"Layers 4, 5, 6 7"
"Leased Line"
"Line Amplifier"
"Line Terminating Equipment (LTE) "
"LO – Local Oscillator "
"Local Area Network (LAN) "
"Local Exchange Company (LEC) "
"LoS – Line of Sight "
"Loss Of Frame (LOF)"
"Loss Of Signal (LOS)"
"LTE-Advanced – Long-Term Evolution Advanced "
"LTE-Advanced Pro"
"LTE-LAA – Long-term Evolution Licensed Assisted Access "
"Management Information Base (MIB)"
"Massive MIMO "
"MC Multicarrier "
"MCC Mobile Country Code"
"MEC – Multi-Access Edge Computing "
"Media Access Control (MAC) "
"Megabits per Second (Mb/s or Mbps) "
"Metropolitan Area Network (MAN)"
"MHz – Megahertz"
"MIMO – Multiple-Input / Multiple-Output"
"MIPI – Mobile Industry Processor Interface"
"mMTC – Massive Machine-Type Communications"
"mmWave – Millimeter Wave"
"MNC – Mobile Network Code"
"Moving Picture Experts Group (MPEG)"
"MU – Measurement Uncertainty"
"MU-MIMO – Multiple User, Multiple-Input / Multiple-Output"
"Multi-protocol Label Switching (MPLS)"
"Multicast"
"Multimode Fiber Optical"
"Multiple System Operator (MSO) "
"Multiplex"
"Multiplexer (MUX) "
"Multiplexing"
"Network "
"Network Attached Storage (NAS)"
"Network Element (NE)"
"Network Equipment Manufacturers (NEM's)"
"Network Exposure Function (NEF)"
"Network Interface Card (NIC)"
"Network Management System (NMS)"
"Next-Generation Network Architecture (NGNA)"
"Next-Generation Network (NGN)"
"NFTF – Near-Field to Far-Field"
"NGC/NGCN – Next Generation Core / Next Generation Core Network"
"NLOS – Non-Line of Sight"
"NR New Radio 5G NR"
"NRF – Network Repository Function"
"NSA NR – Non-Standalone NR "
"NSSF – Network Slice Selection Function "
"Numerology"
"NV IOT – Network Vendor Interoperability Testing"
"OBW – Occupied Bandwidth"
"OC - Optical Carrier"
"OFDM – Orthogonal Frequency Division Multiplexing"
"Open Systems Interconnection (OSI) "
"Open Transport Network (OTN) "
"Operations Support System (OSS)"
"Optical Add/Drop Multiplexer (OADM) "
"Optical Amplifier (OA)"
"Optical Channel "
"Optical Control Plane"
"Optical Line Amplifier (OLA)"
"Optical Path"
"Optical Service Channel (OSC) "
"OQAM – Offset Quadrate Amplitude Modulation "
"OSI - Open Systems Interconnection"
"OTA Over The Air"
"Out-Of-Band (Transmission)"
"Outside Plant (OSP) "
"Oversubscription"
"P-OFDM – Pulse-Shaped Orthogonal Frequency Division Multiplex "
"Packet-over-SONET/SDH (POS) "
"PacketCable™ Multimedia"
"Packetize "
"PAPR Peak To Average Power Ratio"
"Payload"
"PCF – Policy Control Function"
"Performance Monitoring (PM)"
"PGW – Packet Data Network Gateway"
"Phased Array Antenna "
"Picocell "
"Plain Old Telephone Service (POTS) "
"Point of Presence (POP) "
"Polarization Mode Dispersion (PMD) "
"Port"
"Protocol "
"Provider "
"PSS – Primary Synchronization Signal"
"PTCRB – PCS Type Certification Review Board "
"Public Network"
"Public Switched Telephone Network (PSTN) "
"QAM – Quadrature Amplitude Modulation"
"QoE – Quality of Experience "
"QoS – Quality of Service"
"Quadrature Amplitude Modulation (QAM) "
"Quality of Service (QoS)"
"RACH – Random Access Channel"
"Radio Frequency (RF) "
"RAN – Radio Access Network"
"RAT – Radio Access Technology"
"Reconfigurable Optical Add/Drop Multiplexer (ROADM) "
"Regeneration"
"Regional Bell Operating Company (RBOC)"
"Remote Authentication Dial In User Service (RADIUS)"
"Repeater"
"Resilient Packet Ring (RPR) "
"Restoration"
"Route"
"Router"
"RRH – Remote Radio Head"
"RRM – Radio Resource Management"
"RX – Receive"
"SA-NR Standalone NR"
"SBA – Service-Based Architecture"
"SC – Single Carrier"
"SCSI Bus"
"SDN – Software-Defined Networking"
"SEM – Spectrum Emissions Mask"
"Serial Digital Interface (SDI)"
"SFI – Slot Form Indicator"
"Signal-to-Noise Ratio (SNR)"
"Signaling"
"Simple Network Management Protocol (SNMP) "
"Single Mode Fiber"
"Small Computer System Interface (SCSI) "
"Small Form-factor Pluggable (SFP) "
"SMF"
"SNIR"
"SNR"
"SONET/SDH SONET "
"SRDF - Synchronous Disk Mirroring "
"SS-RSRP"
"SS-RSRQ "
"SS-SINR Synchronization Signal to Signal Plus Noise Ratio "
"SSS Secondary Synchronization Signal"
"Standard Definition Television (SDTV)"
"Statistical Multiplexing"
"Storage Area Network (SAN)"
"SU-MIMO"
"Su-Mimo "
"Switch "
"Synchronous Digital Hierarchy (SDH) "
"Synchronous Optical Network (SONET) "
"Synchronous Replication"
"Synchronous transfer mode In a Broadband Integrated Services Digital Network (B-ISDN)"
"Synchronous Transport Signal (STS, STS-n) "
"T1"
"T3"
"TCP Offload Engine "
"TDD – Time Division Duplex Duplex"
Telecom Glossary
"Telecommunications Management Network (TMN"
"Throughput"
"Time Division Multiplexing (TDM) "
"Transceiver"
"Transmission Control Protocol/Internet Protocol (TCP/IP) "
"Transmission Control Protocol (TCP) and User Datagram Protocol (UDP)"
"Transmission Loss"
"Transmit Diversity"
"Transport Layer"
"Trap "
"TRX – Transceiver"
"TT – Test Tolerance"
"TTI – Transmission Time Intervals"
"Tunneling "
"TX "
"UDM – Unified Data Management"
"UE Emulation"
"UE – User Equipment"
"UF-OFDM"
"UL – Uplink"
"Unidirectional Path Switched Ring (UPSR)"
"UPCL – Uplink Classifier "
"UPF – User Plane Function "
"uRLLC – Ultra"
"User Datagram Protocol (UDP) "
"UW-OFDM Unique Word Orthogonal Frequency Division Multiplexing "
"V2X Vehicle-to-Everything"
"VDSL "
"VDSL2 (second generation VDSL) "
"vEPC – Virtual EPC"
"Video on Demand (VoD) "
"Virtual Local Area Network (VLAN) "
"Virtual Private Network (VPN)"
"Virtual Router Redundancy Protocol (VRRP)"
"Virtualization "
"VoIP Voice-over-Internet Protocol"
"VSG – Vector Signal Generator"
"VSWR – VSWR – Voltage Standing Wave Ratio"
"VVM – Vector Voltmeter"
"W-OFDM – Windowed Orthogonal Frequency Division Multiplexing"
"Wavelength "
"Wavelength Division Multiplexing (WDM)"
"WCDMA – Wideband Code Division Multiple Access"
"Wi-Fi "
"xDSL "
"Xn Interface"

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