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

user to enter the weight, A red and blue car were involved in a head-on co...

A red and blue car were involved in a head-on collision. The red car was at a standstill and the blue car was possibly  speeding. Eye witness video recorded suddenly following the

excitation diagram indicating , a.  Sketch the excitation diagram indicati...

a.  Sketch the excitation diagram indicating the last states and next states. b. Build the circuit using a Synchronous Counter with JK FF and NAND gates only. Replicate the circ

Draw and illustrate the block diagram of DMA controller, Draw and illustrat...

Draw and illustrate the block diagram of DMA controller. Also discuss the various modes in which DMAC works. Direct memory access (DMA) is a process in that an external device

General considerations for research -artificial intelligence, General Consi...

General Considerations for Research -artificial intelligence: If we can specify the initial state, the operators or a consumer and the goal check for a search problem, that al

Diiferentiate between ROM and PROM, Diiference between ROM and PROM. R...

Diiference between ROM and PROM. ROM: It also called Read Only Memory is a Permanent Memory. The data is permanently stored and cannot be changed in Permanent ROM. This can o

Give some examples of malicious data, Give some examples of malicious data....

Give some examples of malicious data.  In May 2002, the Norton Anti-Virus software for Windows operating systems detects about 61000 malicious programs. Some of them are named

What is multiplicity, What is multiplicity? Multiplicity is applied to ...

What is multiplicity? Multiplicity is applied to attributes for data base application. Multiplicity for an attribute specifies the number of possible value for every instantiat

Nature of intelligence, From the early AI pioneering stage the research ...

From the early AI pioneering stage the research emphasis has been on developing machines with intelligent behaviour. Machine intelligence however is hard to achieve. Some

C programming, write a program to find the area under the curve y=f(x) betw...

write a program to find the area under the curve y=f(x) between x=a and x=b,integrate y=f(x) between the limits of a and b

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