Explain space switching, Computer Engineering

Assignment Help:

Explain Space Switching.

Space Switches: Connections can be made in between outgoing and incoming PCM highways by a cross point matrix of the form demonstrated in figure. However, various channels of an incoming PCM frame may require to be switched by various cross points in order to reach various destinations. Therefore, the cross point is a two-input AND gate. One input is linked to the incoming PCM highway and another to a connection store which produce a pulse at the needed instant. A group of cross points gates can be implemented like an integrated circuit, for illustration using a multiplexer chip.

879_Space Switch.png

FIG - Space Switch.

Figure demonstrates a space switch with k incoming and m outgoing PCM highways, all carrying n channels. The connections store for every column of cross points is a memory along with an address location for every time-slot that stores the number of the cross points to be operated in which time slot. This number is written in the address by the controlling processor so as to setup the connection. The numbers are read out cyclically, into synchronism along with the incoming PCM frame. In every time slot, the number stored at the equivalent store address is read out and decoding logic converts it in a pulse or a single lead to function the relevant cross point.

Because a cross point can make a diverse connection in each of the n time-slots, this is corresponding to n cross points in a space division network. The total space switch is therefore equivalent to n separate k x m switches in a space division switching network.


Related Discussions:- Explain space switching

Can you tell me some of system tasks and their purpose, Can you tell me som...

Can you tell me some of system tasks and their purpose? $display, $displayb, $displayh, $displayo, $write, $writeb, $writeh, $writeo. The most useful of these is $display. T

What are the differences between struts and units, What are the differences...

What are the differences between struts and units?  A warm up question. Units are static objects that exist from the start of the simulation right up to its end, whereas struts

Determine condition how the output changed of JK flipflop, The output of a ...

The output of a JK flipflop with asynchronous preset and clear inputs is '1'. The output can be changed to '0' with which conditions ? Ans. Through applying J = 1, K = 1 and u

Explain main requirements satisfy by page replacement policy, List out the ...

List out the main requirements between page replacement policies which should be satisfied by a page replacement policy? The major requirements that should be satisfied

What is system testing, What is system testing? The final step in testi...

What is system testing? The final step in testing is system testing, which means checking the whole application. System testing exercises the overall application and make sure

System software, System Software System software is a group of progr...

System Software System software is a group of programs written to service another programs. Some system software (e.g., compilers editors and file management utilities) proc

What is called network, Network with point-to-point link is known as (...

Network with point-to-point link is known as (A) Fully Connected Network        (B)  Half Connected Network (C)  Duplex Connected Network    (D)  None of these Ans:

What is applying of an open source systems, What is applying of an Open Sou...

What is applying of an Open Source Systems?   No licensing issues No initial cost Speed of Access Openness and Transparency

What is clock gating, What is Clock Gating? Clock gating is one of the...

What is Clock Gating? Clock gating is one of the power-saving methods used on several synchronous circuits with the Pentium four processors. To save power, clock gating consid

What are the application-oriented languages, What are the Application-orien...

What are the Application-oriented languages Application-oriented languages are highest level, meaning very easy to write and assembly languages are the lowest, meaning hardest

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