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 খুবই গুরত্বপুর্ণ কিছু Full meaning:

Full Meaning:

ISO: International standard organization

OSI: Open source interconnection

QAM: Quadrature Amplitude modulation

OOK: On-off keying

IEEE: Institute of Electrical and Electronics Engineers

ARPANET: Advance research project agency network

MAC: Media Access Network

ATM: Asynchronous transfer mode

DNS: Domain name system

IPsec: Internet Protocol Security

ICMP:  Internet Control Message Protocol

IGMP:  Internet Group Management Protocol

TCP:  Transport layer protocol

HTTP: Hypertext Transfer Protocol

HTTPS: Hypertext Transfer Protocol Secure

TLS/SSL: Transport Layer Security / Secure Sockets Layer.

UDP: User Datagram Protocol

PAN: Personal Area Network

LAN: Local Area Network

WAN: Wide Area Network

MAN: Metropolitan Area Network

ASK: Amplitude-shift keying

FSK: Frequency-shift keying

PSK: Phase-shift keying

BASK: Binary Amplitude shift keying

BFSK: Binary frequency shift keying

BPSK: Binary phase shift keying

QPSK: Quadrature Phase shift keying

ANSI: American National Standrad Institute

CSMA: Carrier Sense Multiple Access

CSMA/CD: Carrier Sense Multiple Access/Collision

CDMA- Code Division Multiple Access.

TDMA: Time Division Multiple Access.

PCM: Pulse code modulation

DTE: Data Terminal Equipment

SIM: Subscriber identity module

PABX: Private Automated branch exchange

SONET: Synchronous optical network

BNZS: Bipolar n-zero substitution

PCM: Pulse code modulation

NASA- National Aeronautics and Space Administration

TDMA- Time Division Multiple Access.

FDMA- Frequency Division Multiple Access.

FDM: Frequency division multiplexing

TDM: Time division multiplexing

CDM: Code division multiplexing

WDM: Wave division multiplexing.

A/D converter: Analog to digital converter.

D/A converter: Digital to Analog converter.

DC: Direct current.

NRZ: Non- Return to zero.

RZ: Return to zero.

HLR – Home Location Register.

VLR- Visitor Location Register.

SIM- Subscriber Identity Module.

PIN- Personal Identification Number.

MSISDN- Mobile Station International Subscriber Directory Number.

GPS- Global Positioning System

GPRS- General Packet Radio Service

QoS- Quality of Service.

LTE- Long Term Evolution.

NTFS: New Technology File

NIC: Network Interface Controller.

www: World Wide Web.

VSAT: Very Small Aperture Terminal.

PPP: Point-to-Point Protocol.

VLAN: Virtual Local Area Network

GEO- Geostationary Earth Orbit.

MEO- Medium Earth Orbit.

LEO- Low Earth Orbit.

DBS- Direct Broadcast Satellite.

DBSS- Direct Broadcast Satellite System. LNA- Low Noise Amplifier.

HPA- High Power Amplifier.

GIS- Global Indication of Satellite.

EIRP- Effective Isotropic Radiated Power.

GSM- Global System For Mobile Communication.

AMPS- Advanced Mobile Phone System.

EMI: Electromagnetic interference

RFI: Radio frequency interference

STP: Shielded twisted pair

UTP: Unshielded twisted pair

EIA: Electronic industries association

CATV: Cable television

VSAT- Very Small Aperture Terminal.

MSAT- Mobile Satellite.

PSTN- Public Switch Telephone Network.

UPT- Universal Personal Telecommunication.

CC- Country Code.

NDC- Network Destination Code.

RG: Radio government

ITA: Telecommunication industry association

LED: Light emitting diode

ILD: Injection laser diode

LASER: Light amplification by stimulated emission radiation

IPX: Internet packet exchange

FTP: File transfer protocol 

HTML: Hyper text markup language

SONET: Synchronous optical Network 

GSM: Global System for mobile communication

GPS: Global Positioning system

INFORMATION

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