Expander expander
EA-DFB: electric absorption distribution feedback.
ECC: embedded control channel embedded or control channel.
EDFA: erbium-doped fiber amplifier
Edi: electronic data interchange
Eic: electrical impedance characteristics
Emc: electromagnetic compatibility
Emi: electromagnetic interference
Electromagnetic sensitivity electromagnetic sensitivity
Equivalent noise equivalent noise
Emergency power supply emergency power supply
Emergency socket
ES: evacuation signal evacuation lighting
ESA: error second a error second type a
ESB:ErrorSecondB error second type b
ESD: electrostatic discharge
ESR: error second ratio error second ratio
Etdm: Electrical Time Division Multiplexing
ETSI: European Telecommunications Standards Association (ETSI)
F: filter top
FAB: fire alarm bell
FACU: automatic fire alarm control device of fire alarm control unit.
FC: Failure Count Number of failures
FC: frequency converter
FCC: fire alarm system
Fieldbus of field control system
FCU: Fan Coil Unit
Fire door fire door
flame detector
Ground distributor
FD: frequency directional frequency divider
frequency division duplex
Optical fiber distributed data interface distributed data interface of optical cable.
Optical fiber distributed data interface optical fiber distributed data interface
Frequency division multiple access
fire elevator
FEBE: Remote block error Remote block error
FEXT: far-end crosstalk
FFES: Foam fire extinguishing system.
Fire fighting: fire hydrant
FI: cost indicator cost indicator
FL: focal length
Fuzzy logic fuzzy logic
Failure management failure management
Fire public broadcasting fire accident broadcasting
FPD: Fire Public Facilities
FR: frequency response frequency response
Frd: fire baffle of fire dam
Refractory shutter
Frequency shift keying: frequency shift keying
FSU: Fixed Subscriber Unit Single User Fixed Station
Fixed temperature thermal detector.
FTP: foil insulated twisted pair cable
FTTB: Fiber to Building Fiber to Building
FTTC: Fiber to Roadside Fiber to Roadside
FTTH: Fiber to the Home, Fiber to the Home
Firewall firewall
FWHM: full-width pulse width at half maximum.
Pacr: attenuation crosstalk ratio and crosstalk ratio
Gap: Gaussian (filtered) frequency shift keying Gaussian filtered frequency shift keying top
GBS: glass breakage sensor.
GC: integrated wiring integrated wiring
GIB: general information block general information module
GNE: gateway network element gateway
Gsm: Global System for Mobile Communications
Hybrid Electric Vehicle
HCBS: high-speed c-bus service unit
Hcs: High-order connection monitoring High-order connection monitoring
Hd: thermal detector temperature detector
Hdb 3:3 order high-density alternate mark inversion high-density alternating mark inversion.
HDLC: high-level data link control
HDLC: Advanced Digital Link Control high-level data link control
Hdsl: high bit rate digital subscriber link.
high definition television (HDTV)
Hec: header vorcontrol: header error control field.
Advanced entity management system
Hfc: Optical Fiber-Coaxial Cable Hybrid System
HGRP: Private Protocol for Home Optical Network Huawei Company
HIFI: hi-fi hi-fi
High performance parallel interface.
HMP: host monitoring protocol
HOA: high-level assembler
Hoa PID: high-order path access point identifier There are not enough access point identifiers for high-order channels.
HOI: high-order interface high-order interface
Honet: the trademark of Huawei integrated service access network, a home optical network.
Ho-TCM: high-order serial connection monitoring and high-order channel serial connection monitoring.
HOVC: High-end Virtual Container
HPA: Higher-order path adaptation Higher-order adaptation
HPC: High-order path connection High-order channel connection
Hpom: High-order path overhead monitor High-order channel overhead monitor
HPP: high-order path protection and high-order channel protection
Hp-rdi: High-order path-remote defect indication High-order channel receives defect indication.
Hp-rei: high-order path remote error indication high-order channel remote error indication.
HPT: high-order path terminal, high-order channel terminal
HRDS: Ill-conditioned reference digital profile assumes reference digital profile
Hsut: High-order path monitoring is not equipped with terminal. High-order channel monitoring is not equipped with terminal.
Hvac: heating, ventilation and air conditioning
HWS: hot water supply hot water supply system