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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.
Figure: call-in-progress tone or routing tone
Jobs which are admitted to the system for processing is called ? Ans. Long-term scheduling is admitted to the system for processing.
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There can be more than one node at the highest level in the structure. False. One can describe only single node at the highest level in the structure on LDB
deque insertion and deletion ..
Home Entertainment: E-commerce has led to HOME ENTERTAINMENT. The video aspect usually includes a large-screen and/or high definition television or a projection system.
An assembly language is a? Ans. Low level programming language is an assembly language.
How do active web pages work? Describe with a small example. Active Web Pages: An active document is not completely specified through the server. Instead an active documen
Write a CGI program that keeps a list of computers that have contacted the server. If comp1 is contacting first time it will display the message: "This is the first contact fr
Q. How can we use Ordered Lists? Lists having numbered items are termed as ordered lists. They are used when items in the list have a natural order. They can also be used when
Visibility. Controls should be clearly visible, so users can see the controls that are available to them. Visual feedback should also be clearly visible, so users can understand wh
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