Explain routing tone in strowger telephony, Computer Engineering

Assignment Help:

Explain routing tone in strowger telephony with waveforms and the timings.

The call-in-progress tone or routing tone is a 400 Hz or 800 Hz intermittent pattern. In electromechanical systems, this is generally 800 Hz with 50 percent duty ratio and 0.5 s on/off period. This is a 400 Hz pattern with 0.5 s on period and 2.5 s off period, in analog electronic exchanges. In digital exchanges, this has 0.1 s on/off periods at 400 Hz. While a subscriber call is routed by a number of different types of exchanges, one hears various call-in-progress tones as the call progresses by different exchanges. Figure shows a routing tone pattern.

1078_routing tone.png

Figure: call-in-progress tone or routing tone


Related Discussions:- Explain routing tone in strowger telephony

Targeting for new business, Assume you own your own small party supply and ...

Assume you own your own small party supply and rental business. You keep an Excel list of potential customers and clients who have rented or purchased from you in the past 2 years.

What is fan-out, What is fan-out? Estimate the average count of every "...

What is fan-out? Estimate the average count of every "many" association encountered with the path. Multiply the individual fan-outs who obtain the fan-out of the whole path, wh

Explain the term step-wise refinement, Explain the term step-wise refinemen...

Explain the term step-wise refinement. Ans:  Step Wise Refinement  Refinement is a method of elaboration. Here one starts with a statement of function that is described a

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

Define polling, Define Polling. A Polling process is used to recognize...

Define Polling. A Polling process is used to recognize the highest priority source by software means. In this process there is one common branch address for all interrupts.

What kind of system do we need to run gimp, Any system able of run Gnome 2,...

Any system able of run Gnome 2, KDE 3.2, Windows 2000, Mac OS X and later versions should be capable to run GIMP. GIMP's biggest appetite is for memory and how much you will requir

Explain the uses of arithmetic processor, Explain the uses of arithmetic pr...

Explain the uses of arithmetic processor A processor has arithmetic processor (as a sub part of it) which executes arithmetic operations.  The data  type,  assumed  to  reside

What do you mean by segment numbers, Q. What do you mean by Segment numbers...

Q. What do you mean by Segment numbers? There is a good reason for not leaving determination of segment numbers up to assembler. It permits programs written in 8086 assembly

Define the meaning of document and finger print, a. Define the meaning of "...

a. Define the meaning of "Document & Finger print" and "Message & Message Digest". What's the difference among the 2 pairs? b. Describe Davies Meyer scheme with diagram. c. W

Develop a regular expression for integer & real number, Develop a regular e...

Develop a regular expression for (i) Integer (ii) Real number (i) A regular expression for integer is [+ | -] (d)+ (ii) A regular expression for real number is [+

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