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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
Draw and explain the function of dual slope analogue to digital converter. Derive the equations used. Ans. Dual slope A/D converter : This has 4 main blocks.
Write a program to mask bits D3D2D1D0 and to set bits D5D4 and to invert bits D7D6 of the AX register.
Timing for both read and update transactions should be gathered to verify whether system functions are being performed in an acceptable timeframe. This should be done standalone an
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Question 1: You want to perform the task of setting an alarm on your mobile phone. You can assume that the alarm option is accessible from the main menu of your phone. (a) P
What is the use of fork and exec system calls? Fork is a system call by which a new process is formed. Exec is also a system call, which is used after a fork by one of the two
State briefly about the Register Transfer A micro operation is a basic operation performed on information stored in one or more registers. The result of operation may replace
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write er diagram for company database
Q. Show Sample Instruction Format of MIPS instruction? Early MIPS architectures had 32-bit instructions and later versions have 64-bit implementations. The first commercial
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