Describe the time division switching, Electrical Engineering

Assignment Help:

Q. Describe the time division switching?

Ans:

Space and Time Switching:

Space Switches: Connections can be made between outgoing and incoming PCM highways by means of a cross point matrix of the form displayed in Figure. Thoughdifferent channels of an incoming PCM frame may need to be switched by various cross points in order to reach different destinations. The cross point is hence a two-input AND gate. One input is connected to the incoming PCM highway and the other to a connection store that produce a pulse at the required instant. A group of cross points gates can be implemented as an integrated circuit, for instance by using a multiplexer chip.

2195_Describe the time division switching.png

Figure demonstrates a space switch with k incoming and m outgoing PCM highways, each one carrying n channels. Connections store for every column of cross points is a memory with an address location for every time-slot that stores number of the cross points to be operated in that time slot. This number is written into address by controlling processor in order to setup connection. Numbers are read out cyclically, in synchronism with incoming PCM frame. In every time slot, number stored at the corresponding store address is read out and decoding logic converts this into a pulse or a single lead to operate relevant cross point.

As a cross point can make a different connection in each of the n time-slots, its equivalent to n cross points in a space division network. Complete space switch is hence equivalent to n separate k x m switches in a space division switching network.


Related Discussions:- Describe the time division switching

Explain iron and silicon iron alloys, Explain iron and silicon iron alloys....

Explain iron and silicon iron alloys. Iron: Galvanised steel and iron wires that are usually used for earth conductor in low voltage distribution systems may also be utilize

Explain information obtained for the load flow analysis, Explain Informatio...

Explain Information Obtained for the Load Flow Analysis (i)  Magnitude and phase angle of the voltage at each bus. (ii)  Active and Reactive power flow in each line. (iii

Determine the active - reactive and apparent power, Determine the active - ...

Determine the active - reactive and apparent power: In the given circuit, determine the active, reactive and apparent power. Figure Solution  The inductive

Show capital asset pricing model, Q. Show Capital asset pricing model? ...

Q. Show Capital asset pricing model? This model was developed by the William F Sharpe ( 1990 Nobel prize winner in the economy ) and john linter in 1960. The model attempt to c

Economic analysis of hydropower, find the net value of power if an average ...

find the net value of power if an average value of energy is assumed to be $0.05/KWh, the capacity value is $30/kw-yr ...

Semiconductor in equilibrium, Semiconductor  in Equilibrium Equilib...

Semiconductor  in Equilibrium Equilibrium in semiconductors implies the following: (i) Steady state: ∂Z / ∂t = 0 In which Z is any physical quantity like charge, volt

Calulation of hv/lv ratio to reduce the line loss, kindly send us the formu...

kindly send us the formula and C program for performance improvement of distribution system using HV/LV ratio. REGARDS ANUJ AGARWALA

Pn junction, the depletion layer in the pn junction is caused by

the depletion layer in the pn junction is caused by

Define johnson counters to produce a time delay, Define Johnson Counters to...

Define Johnson Counters to Produce a Time Delay? The "serial in-serial out" shift register can be used as a time delay device. The amount of delay able to be controlled by:

FRACTIONAL PID TUING USING GA FOR LOAD FREQUENCY CONTROL, Iam doing my proj...

Iam doing my project on LFC using tuned FOPID.I have considered a two area model..I need help regarding my project.i need help regarding implementation of GA MATLAB code for a two

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