Basic architecture of digital switching systems, Electrical Engineering

Assignment Help:

Q. Explain the basic architecture of digital switching systems. Explain in detail companding.

Ans:

A simple N X N time division space switch is displayed in Figure. Switch can be represented in an equivalence form as a two-stage network with N X 1 and 1 X N switching matrices for first and second stages corresponding as displayed in Figure. Network has one link interconnecting the two stages. Every inlet/outlet is a single speech circuit corresponding to a subscriber line. Speech is carried as PAManalogue samples or PCM digital samples, occurring at 125-µs intervals. When PAM samples are switched in a time division manner, switching is called analogue time division switching. If PCM binary samples switched, then switching is termed as digital time division switching. In Figure, the interconnected by a suitable control mechanism and speech sample transferred from the inlet to the outlet.

2406_Basic architecture of digital switching systems.png


Related Discussions:- Basic architecture of digital switching systems

Explain solid-state control of dc motors, Q. Explain Solid-State Control of...

Q. Explain Solid-State Control of DC Motors? Dc motors, which are easily controllable, have historically dominated the adjustable-speed drive field. The torque-speed characteri

Define sampling frequency, Define Sampling Frequency? Since real analog...

Define Sampling Frequency? Since real analog signals consist of several frequencies, spectrum of the input signals should be limited to make sure that no signal energy exists a

Show noise and stability of operational amplifier, Q. Show Noise and Stabil...

Q. Show Noise and Stability of operational amplifier? Noise This refers to the small, rapidly varying, random spurious signals generated by all electronic circuits. Noise

Determine the largest crest factor, A quantizer has 130 quantum levels that...

A quantizer has 130 quantum levels that exactly span the extremes of a symmetrically ?uctuating message with step size δv = 0.04 V. Determine the following: (a) |f(t)|max.

Explain protected mode interrupt, Explain protected mode interrupt. In...

Explain protected mode interrupt. In this mode, interrupts have exactly similar assignments as in real mode, but the interrupt vector table is not same. In place of interrupt

Explain digital control systems, Q. Explain Digital control systems? Si...

Q. Explain Digital control systems? Significant progress has been made in recent years in discrete-data and digital control systems because of the advancesmade in digital compu

Define the x-nor or exclusive-nor gate, Define the X-NOR or Exclusive-NOR G...

Define the X-NOR or Exclusive-NOR Gate?   This is the EX-OR gate with the output inverted, as shown by the 'o' on the output and the output Q is true if inputs A and B a

Decrement contents of register - dcr decrement , Decrement  contents of Re...

Decrement  contents of Register The contents of register R will be decremented  by one and  the result is stored  in the same register  R. It is also  an exceptional  case i

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