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

Describe in brief the history of e-commerce, Describe in brief the history ...

Describe in brief the history of E-Commerce.  History of E-commerce. E-commerce started before personal computers were prevalent and has grown into a multi-billion d

Define mercantile process model from perspect of merchant, Define Mercantil...

Define Mercantile Process Model from the Merchant’s perspective along with a suitable diagram. This model consists of three activities into the purchase consummation phase: Aut

NETWORK ADMIN, Discuss the risks of having a single root user and how more ...

Discuss the risks of having a single root user and how more limited management abilities can be given to others users on Linux/UNIX systems.uestion #Minimum 100 words accepted#

Determine less propagation delay in synchronous-ripple ckt, You have two co...

You have two counters counting up to 16, built through negedge DFF, First circuit is synchronous and second is "ripple" as cascading, which circuit has a less propagation delay? Wh

How many select lines will have a 16 to 1 multiplexer, How many select line...

How many select lines will a 16 to 1 multiplexer will have ?   Ans. For 16 to 1 MUX four select lines will be needed to select 16 (2 4 ) inputs.

What is a path name, What is a path name?  A pathname is the path from ...

What is a path name?  A pathname is the path from the root by all subdirectories to a specified file. In a two-level directory structure a user name and a file name describe a

Cookies for one page in your site, How do you turn off cookies for single p...

How do you turn off cookies for single page in your site? We can turn off the cookies for one page:- By setting the Cookie. Discard property false.

On what machines matlab should be run?, Matlab will run from sthelens, and ...

Matlab will run from sthelens, and only if sthelens is down, from cher, orsay or tiree. It runs on other machines too, but some of the other machines have older versions of the OS

Examples of artificial neural networks, Examples of artificial neural netwo...

Examples of artificial neural networks: Now here as an example consider a ANN that has been trained to learn the following rule categorising the brightness of 2x2 black and wh

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