Explain time multiplexed space switching, Electrical Engineering

Assignment Help:

Explain time multiplexed space switching? With a neat diagram illustrate its operation.

Ans:

Time division switches where an outlet or an inlet corresponded to a single subscriber line with one speech sample appearing every 125 µs on the line. Such switches are used in local exchanges. We now consider switches which are essential in transit exchanges. Here inlets and outlets are trunks that carry time division multiplexed data streams. We call these switches time multiplexed switches. A time multiplexed time division space switch is displayed in Figure. There are N incoming trunks and N outgoing trunks, each one carrying a time division multiplexed stream of M samples per frame. Every frame is of 125-µs time duration. In one frame time, a total of MN speech samples have to be switched. One sample duration, 125/M microseconds, is generally referred to as a time slot. In one time slot, N samples are switched. Figureillustrates an output-controlled switch. Output is cyclically scanned. There is a 1-to-M relationship between outlets and control memory locations, it implies that there are M locations in the control memory corresponding to each outlet.

468_Explain time multiplexed space switching.png

Control memory has MN words. If we view control memory as M blocks of N words each, a location address can be specified in a two dimensional form (i,j)where i is the block address and j is the word within the block. We have 1< i


Related Discussions:- Explain time multiplexed space switching

Superposition, what is the purpose of superposition theorem

what is the purpose of superposition theorem

Microcontroler based elevator system, -micro controller AT89C51 -dc motor -...

-micro controller AT89C51 -dc motor -magnetic sensors -load sensors -how to connect all the components? and give me a circuit diagrams -how to interface all the component with m

Biasing, Biasing: Bipolar transistor amplifiers have to be properly bi...

Biasing: Bipolar transistor amplifiers have to be properly biased to operate properly. In circuits made up with individual devices (discrete circuits), biasing networks contai

Digital control system, block diagram of digital control system and explain...

block diagram of digital control system and explain each block

Development tool, Development tool for SDR i.e software defined radio

Development tool for SDR i.e software defined radio

3-phase 180 degree mode vsi , 3-phase 180 0 mode VSI In 1800 mode VSI...

3-phase 180 0 mode VSI In 1800 mode VSI  each thyristor  conduct  for 1800 and two  thyristor  are fired  at 600 interval. For  example  if thyristor  T1  is fired at 00 then

What are wired and wireless transmission systems, What are wired and wirele...

What are wired and wireless transmission systems?  Transmission Systems: Modern long distance transmission systems can be placed under three main categories: 1.  Radio Sy

Transistor in the common base configuration, Draw the circuit of transistor...

Draw the circuit of transistor in the common base configuration. Draw the Active, saturation and cut-off region. List the characteristics of Ideal Op-Amp. Sketch the pin diagram

Conditional call instruction, Conditional Call Instruction Similar  to ...

Conditional Call Instruction Similar  to conditional  jump  instructions there are conditional call  instructions  also based on various  flags.

Explain diffusion, Explain Diffusion. Diffusion : Though, the mobili...

Explain Diffusion. Diffusion : Though, the mobility of the carriers in a semiconductor is greater than the electrons in metals, the conductivity in the former is much less t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd