Sonet sdh , Computer Networking

SONET SDH

To satisfy the  requirements  of ever increasing data rate  for diverse applications, ANS developed  a standard known as synchronous optical  network by utilizing the  enormous bandwidth of optical fibber, another very similar standard developed by ITU T  is known  as synchronous digital hierarchy. It is a synchronous TDM  systems controlled by master clock which adds predictability. The  comprehensive SONET/  synchronous digital hierarchy standard is expected to provide the  transport infrastructure for  worldwide telecommunication of or at least the next two or three  decades.

The increased configuration flexibility  and bandwidth  availability of SONEL provides significant advantages over the older telecommunication systems. These  advantages  include the followings .

a.Reduction in equipment  requirement san an increase in network   reliability.

b.Provision of  overhead and payload bytes the overhead bytes management of the  payload  bytes on an individual basis and facilitate centralized fault sectionalisation.

c.Definition of a synchronous multiplexing format for carrying lower level digital signals  and a synchronous structure that greatly simplifies the interface to digital switches digital cross connect  switches and add drop  multiplexers.

d.Availability  of a flexible  architecture capable  of accommodating  future applications  with a variety of transmission  rates.

In brief  SONET  defines optical carrier levels and electrically equivalent synchronous transport signals  for the fibber optic  based transmission hierarchy.

To  a set of synchronous signals the digital transitions in the signals  occurs  at exactly at the same  rate.

If two  digital signals are plesiochronous their  transitions occur at almost   the same rate  with any variation being constrained with in tight limits.

In t eh case  of asynchronous singles the transitions of the signals don't  necessarily occurs  a the same  nominal rate.

Posted Date: 3/19/2013 12:46:02 AM | Location : United States







Related Discussions:- Sonet sdh , Assignment Help, Ask Question on Sonet sdh , Get Answer, Expert's Help, Sonet sdh Discussions

Write discussion on Sonet sdh
Your posts are moderated
Related Questions
802.11 CSMA/CA a) Wait a DIFS time to avoid collision b) Send RTS and wait for CTS reply to obtain the use of the Medium (air) c)  Use of SIFS time for control informatio

Q. Show the Use of flow control? Flow control denotes to a set of procedures used to restrict the amount of data that the sender can send before waiting for Error Control

LOW-Earth Orbiting have more advantageous in Mobile based communication devices like PDAs, Cell phones and automobile communications. The LOW-Earth Orbiting is a satellite of orbit

Memory Memory Layout   BOOTROM This device stores the information of  the startup diagnostic  code in permanently. It performs diagnostics of  hardware  wh


Question: a) List three characteristics and two potential problems of a peer-to-peer environment. b) List three characteristics and two potential problems of a client/

AILURES AND BATHTUB CURVE The life of a component system can be grouped into three different phases typical curve depicting these three is called the bathtub curve due to its s

Instruction Pipelines The stream of instructions in instruction execution cycle may be realized by a pipeline where overlapped executions of various operations are performed. T

Q. Define the Distance Vector Routing? Distance Vector Routing Every router periodically shares its knowledge about the entire internet with its neighbours Sharing