Synchronous optical networking sonet is a standardized digital communication protocol that is used to transmit a large volume of data over relatively long distances using a fiber optic medium. Synchronous digital hierarchy sdh definition synchronous digital hierarchy sdh and synchronous optical network sonet refer to a group of fiberoptic transmission rates that can transport digital signals with different capacities. Protocol basics, internet protocol ip optical fiber is a demanding mistress. Carrier networks are all about large bandwidths over large distances. Both sonet and sdh are based on a structure that has a basic frame format and speed. Before reading this you may find the following tutorials useful. Synchronous optical network sonet is an optical interface. While it is a tutorial on sonet sdh, the reader is expected to be familiar with communications concepts such as parity. The sonet tutorial is available at the following internet address. We need a method of organizing the bits on a fiber, and methods of alarming, automatic switching to backup and capacity management. The ohio state university raj jain 2 what is sonet. This document is a broad outline of what synchronous optical network sonet technology is, and how it works. Synchronous digital hierarchy sdh q you can lease a sonet connection from carriers city a city b.
The software uses tv tuner card to capture live data, and then transports it through the network using multicast protocols. Before about year 2000, the most popular technology for these functions was a standard called synchronous optical network sonet. The frame format used by sonet is the synchronous transport signal sts, with sts1 as the baselevel signal at 51. Units and divisions related to nada are a part of the school of electrical engineering and computer science at kth royal institute of technology. Sonet synchronous optical network and sdh synchronous. Overview this tutorial discusses synchronous transmission standards in world public telecommunications networks. This page of sdh tutorial from wireless tutorials section covers sdh sonet basics, hdlc frame, sdh terminologies, sdh rates, sonet sts1 sdh frame. This paper attempts to describe how sonet sdh works, down to the octet level. With sonet, multiple digital data streams are transferred at the same time over optical fiber using leds and laser beams. Multiplexing and its type computer network lecture for ibps it officer exam 2017. It also explains various methods of mapping payload into the sonet signal format. Synchronous optical network sonet tutorial definition synchronous optical network sonet is a standard for optical telecommunications transport formulated by the exchange carriers standards association ecsa for the american national standards institute ansi, which sets industry standards in the u. Sonet equipment is generally used in north america, and sdh equipment is generally accepted everywhere else in the world.
Additionally, the tutorial provides specific sonet information as it relates to transporting ethernet over sonet. Synchronous digital hierarchy sdh columbia university. Sonet sdh tutorial hdlc frame,sdh sonet terminologies. Networking computer and wireless networking basics home networks tutorials.874 416 1351 678 1121 415 1462 223 206 314 1014 1179 267 1158 220 552 524 95 160 1466 150 119 1135 1176 239 1352 1147 422 964 787 463 905 522 1146 790 1034 1218 1152 38