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Networks - Dubai CCTV | Dubai CCTV Experts Networks - Dubai CCTV
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Physical Layer (Layer 1) – Complete Devices & Services

Device

Network Card (NIC)

Ethernet or Wi-Fi adapter inside PC/laptop/phone.

Device

Ethernet Cables (Cat5e/6/6A/7/8)

Most common wired network cables with RJ45 plugs.

Device

Fiber Optic Cables (SM/MM)

Glass cables carrying light – used for very long & fast links.

Device

Repeater

Amplifies weak signals to go farther (rare today).

Device

Hub (Dumb Hub)

Old multi-port repeater – sends data to everyone.

Device

Patch Panel

Wall of organized cable sockets in server rooms.

Device

Media Converter

Converts copper ↔ fiber or different speeds.

Device

Transceiver (SFP/SFP+/QSFP)

Small pluggable modules for fiber or copper.

Device

Network Access Controller

Physical appliance that enforces who joins the network.

Device

Biometric Scanner

Fingerprint/face/iris readers with Ethernet port.

Device

Electric Door Strike/Lock

Physical lock controlled by access system.

Device

RFID / Proximity Card Reader

Tap-card readers (125kHz/13.56MHz) on doors.

Device

PoE Injector / Midspan

Adds power to Ethernet cable for cameras/IP phones.

Device

ONT (Optical Network Terminal)

Box that converts fiber from ISP to Ethernet.

Service

Wi-Fi 6 / 6E / 7

Latest wireless standards using 2.4/5/6 GHz bands.

Service

5G Cellular

Mobile broadband using radio towers.

Service

GPON / XGS-PON

Fiber-to-the-home technology (1–10 Gbps).

Device

Wiegand / RS-485 Controller

Old-school access control wiring standard.

Device

Coaxial Cable Modem

Converts cable TV signal to Ethernet.

Device

Antenna (Wi-Fi / 4G/5G)

Physical radio transmitter/receiver.

Service

Bluetooth 5.3

Short-range wireless for earbuds, keyboards.

Device

PLC (Powerline Adapter)

Sends internet through electrical wiring.

Device

DAC Cable (Direct Attach)

Short fixed copper/fiber cable for racks.

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