Theme: Data transmission based on channel and packet switching

Partitioning the data into packets

Partitioning the data into packets takes place in several stages. Chain sender node generates transmission data, which is divided into equal parts. After that occurs the formation of a package by adding the header overhead. And the last stage is assembled packets into the original message to the destination node.

Partitioning the data into packets

Transferring data over a network as a packet

3-picture. Packet Transmission Network

As in the circuit switched networks, packet switched networks, for each of the streams is determined manually or automatically route fixed in the stored tables for commutation switches. Packets entering the switch are processed and sent on a particular route

Uncertainty and asynchronous movement of data in packet-switched networks makes special demands on the switches in such networks.

The main difference between a packet switch of the switches in the circuit-switched networks is that they have an internal buffer memory for temporarily storing packets. Switch buffers need to harmonize data rates in communication links connected to its interfaces, as well as to harmonize the rate of arrival packets with their switching speed.