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

Explain in detail about first generation electronic computer, First Generat...

First Generation Electronic Computers (1937-1953) Three machines have been promoted at different times as first electronic computers. These machines used electronic switches

Size of scripts and libraries, Main script section ("Sub Main .. End Sub) a...

Main script section ("Sub Main .. End Sub) and function bodies should fit within an A4-page (approx. two monitor-pages). If the code doesn't fit it is a candidate to do more decoup

Why is xml superior to other forms of data exchange, Why is XML superior to...

Why is XML superior to other forms of data exchange? The XML gives universal data format for integrated electronic business solutions. Other database systems and Relational dat

Describe about the embedded applications assembly, Describe about the Embed...

Describe about the Embedded applications assembly Embedded applications assembly and C programs are developed since embedded programs aren't large. For all others high-level an

What is basic working of modem, Q. What is basic working of Modem? A mo...

Q. What is basic working of Modem? A modem (modulator/demodulator) is an electronic device that takes digital data as a serial stream of bits and produces a modulated carrier s

Polymorphism and inheritance in lingo programming, Question : (a) What...

Question : (a) What are parent scripts and child objects in Lingo object oriented programming (OOP)? What are the equivalent terms used in C++ OOP? (b) Differentiate b

Customer service and support in post purchase interaction, Describe the cus...

Describe the customer service and support in post purchase Interaction. Post purchase Interaction: The considerations at this step can be explained by the given example:

Advantage of booth and restoring division algorithm, Describe the advantage...

Describe the advantage of using Booth algorithm? Ans:  a) It achieves efficiency in the number of additions needed when the multiplier has a few large blocks of 1's. b) It

Which method is used for resolving data dependency, Which method is used fo...

Which method is used for resolving data dependency conflict by the compiler itself?  (A) Delayed load.   (B) operand forwarding.   (C) Pre fetch target instruction.  (D) loo

Determine about the voice systems, Determine about the Voice Systems Sp...

Determine about the Voice Systems Speech recognizers are used in some graphics workstations as input devices to accept voice commands. The voice-system input can be used to ini

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