This article touches upon wave modulation techniques used in physical layer that allows one or multiple low bandwidth signals to use or share a high frequency bandwidth. Note that post only covered the lowest layer of OSI model ie physical layer and not the data link layer which actually provides access technologies liek FDMA , TDMA , CDMA etc.
Author: altanai
Specialized in CPaaS, carrier-grade WebRTC-SIP telecom platforms for Unified communication-collaboration, signaling gateways, SBC, soft turrets, IoT-surveillance and telecom integrations.
Ardent contributor to Open Source software, avid freelancer, innovator and technical writer (telecom.altanai.com ).
Inventor of "RamuDroid" an IOT Road-Cleaning robot
Author of book "WebRTC Integrator's Guide" published by Packt
L1, L2 ,L3 equipment and L3 vs L4 switches
Layer 1: Physical LayerData : Physical bitsEquipment : cables, fiber optic, ethernet hubsLayer 2 Data Link2A. MAC ( Medium Access control)2B. LLC ( Logical Link Control)Data : FramesEquipment : Switches , Bridges , Network Card.Layer 3 : Network LayerData : packetEquipment: FirewallsL2 Switch (hardware)L3 Switches (logical addressing)Layer 4–6 switch (LB,NAT,SBC)Layer 7 switch (CDN,IPPBX) Layer 1: … Continue reading L1, L2 ,L3 equipment and L3 vs L4 switches
