SDH SONET 1

PDH SDH SONET. SDH and SONET are transmission equipment. To understand their working, we need to discuss the PDH structure first. PDH Plesiochronous Digital Hierarchy. Plesio = Near                    Chronous  = Time.…
Ethernet

Ethernet Introduction Ethernet is the name of LAN standard defined by IEEE 802.3. It was basically introduced as a LAN technology.With the introduction of Gb Ethernet. Now It is MAN and WAN standard. Shared access network technology Link layer technology…
Intelligent Transport System ITS

Intelligent Transport System ITS. An intelligent Transport system is an application of technology. ITS is the integration of communication technology and computation devices. It provides important information, security, safety, and efficiency. It links people, Road, and vehicles.
Line Coding

Line Coding Line coding a technique to convert digital data into a digital signal. In our last video Pulse Code Modulation, we learn that how to convert any analog signal into digital bits.Now if we want to send these bit over…
Pulse Code Modulation PCM

Pulse Code Modulation PCM Pulse code modulation is a technique, which is used to convert an analog signal into digital signal. PCM is the preferred method of communication within the public switched telephone network (PSTN). It is an old but widely…
Ubiquitous computing

Ubiquitous Computing. This concept is not new but now it is getting famous.It is taking us in the world of automation.Before getting its concept, you need to clear that What is a computer? Here we will discuss the basic definition of the computer.
T1 and E1 Lines

E1 and T1 Lines E1 and T1 standards are basically introduced for voice communication. Both are using TDM for frame formation. In this video, we will discuss the digital transmission advantages and disadvantages. Basic concept about Modulation, Multiplexing, and PCM is…
OSI Reference Model

OSI Reference Model In the beginning, when networks established, devices can communicate with devices of the same manufacturer.OSI (open system interconnection) reference model was first introduced by ISO (international organization for standardization).Its main purpose is to facilitate communication between two systems…