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

Simulate a worm propagation considering traffic delay, At time t when an in...

At time t when an infected machine scans and finds a vulnerable machine, the vulnerable one will be compromised and start to scan and infect others at time t+X, where X is a r.v. f

Define a console-program to make an array of integers, Define a console-pro...

Define a console-program to make an array of integers. Initialize the array and assign the values in array. Describe a method to pass the array and alter array elements. show array

Importance of artificial intelligence, Businesses are interested in AI bec...

Businesses are interested in AI because of the characteristics it offers that no other systems type offers. That is AI ability to: a. Preserve Intelligence and Knowledge: C

What is difference between ram and fifo, What is difference between RAM and...

What is difference between RAM and FIFO? FIFO certainly does not have address lines. It is stands for first in and first out. It is an algorithm based method. It is used to s

What do you mean by rad, a. What are the activities included during the pro...

a. What are the activities included during the process of developing a formal specification of a sub-system interface? b. Explain the Pair Programming? What are the benefits of

How i-o interface communicate with processor, Q. How I-O interface communic...

Q. How I-O interface communicate with processor? The above illustration clearly specifies need communication between processor and I/O interface. This communication includes su

Convert the decimal numbers into hexadecimal, Q Convert the following DECIM...

Q Convert the following DECIMAL numbers into HEXADECIMAL, double check by converting the result HEXADECIMAL to DECIMAL. a)    24 b)   547.56

Factor causing parallel overheads, Performance metrics aren't able to attai...

Performance metrics aren't able to attain a linear curve in comparison to increase in number of processors in parallel computer. The main reason for above situation is presence of

Online teaching jobs, Dear, I''m an engineering post graduate in computer s...

Dear, I''m an engineering post graduate in computer science. I would like to work as online tutor. please suggest ideas. Thank You.

What are the events used for page headers and footers, What are the events ...

What are the events used for page headers and footers? The events TOP-OF-PAGE and END-OF-PAGE are used for pager headers and footers.

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