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

Central energy conservation fund, Central Energy Conservation Fund Thi...

Central Energy Conservation Fund This fund is to be set up at the Centre to develop the delivery mechanism for large-scale adoption of energy efficiency services like as perfo

Supernode, how does creating a supernode helps solve the problems?

how does creating a supernode helps solve the problems?

Substation preventive maintenance scheduling optimization, Introduction: ...

Introduction: The scheduling system that is followed by the maintenance department is not well established and is dependable on employee's personal judgment. There were a lot o

Corrosion, I want to know whether the circuits for both methods(linear pola...

I want to know whether the circuits for both methods(linear polarization resistance and electrochemical impedance spectroscopy) are same or not?

Find the diameter of the antennas, Two stations, located on mountain tops 4...

Two stations, located on mountain tops 40 km apart, communicate with each other using two identical paraboloidal antennas with pencil beam- width of 1°, aperture ef?ciency of 0.8,

What is positive clipper, Q. What is positive clipper? Give 2 types of its ...

Q. What is positive clipper? Give 2 types of its applications ? In the series positive clipper, when the input voltage is positive, the diode does not conduct and acts an open

Global positioning system, Global Positioning System: For power utilit...

Global Positioning System: For power utilities, the basic objective of using Global Positioning System (GPS) and GIS should be to: enhance the efficiency of transmissio

Find the corresponding change ib in the base current, Q. Using the small-s...

Q. Using the small-signal equivalent circuit of a BJT with gm = 0.03 S, β = 75, and VA = 65 V, a load resistor RL is connected from the collector to the emitter, as shown in Figure

Techniques and resources in problem base learning, Techniques and resources...

Techniques and resources Different techniques and resources were used in different areas of the problem during the course of the project. The most important of them was th

Example of clamper circuits, Example of clamper circuits: Example of c...

Example of clamper circuits: Example of clamper circuits are as follow Voltage multiplier circuit: voltage circuit is employed to maintain a relatively low transformer pe

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