What is dtmf dialling, Electrical Engineering

Assignment Help:

Q. What is DTMF dialling?

DTMF dialling

1.  Uses push buttons

2.  Uses 8 different frequencies in pairs.

3.  16 different characters can be represented.

4.  The frequencies used prevent generating of harmonics.

5.  Each number is represented by a high signal & low signal=

636_What is DTMF dialling.png


Related Discussions:- What is dtmf dialling

Effect of feedback on stability, Q. Effect of feedback on stability? Le...

Q. Effect of feedback on stability? Let us consider the direct transfer function of the unstable first-order system of Figure (a). The transfer function is given by whe

Working of crt, Q.   Explain working of CRT with suitable diagram discuss t...

Q.   Explain working of CRT with suitable diagram discuss the focusing arrangement. What is need of aquadag? OR Why are the operating voltages of a cathode ray tube arran

Three byte instruction , Three byte instruction The  instruction which...

Three byte instruction The  instruction which  have 16  bit data address  as its  operand  are three byte  instruction. They  need three  memory  locations to store  them in m

Explain about subscriber loops signalling, Q. Explain about Subscriber loop...

Q. Explain about Subscriber loops signalling? In a telephone network, subscriber loop signal linger lies upon the kind of a telephone instrument used. The intra exchange signal

Tone used in stronger telephony, Q. Tone used in stronger telephony? Di...

Q. Tone used in stronger telephony? Dial Tone: This tone is used to specify that exchange is ready to accept dialled digits from subscriber. Subscriber must start dialling only

Integrated circuit components, You are required to design and document the ...

You are required to design and document the hardware design for Lift Control Unit (LCU) as required by the questions/specification in section 2 above, based on a 68HC12D60 microcon

Dc chooper, Establish the relationship between duty ratio and output voltag...

Establish the relationship between duty ratio and output voltage

Elucidate the process of inter-register signalling, Q. Elucidate the proces...

Q. Elucidate the process of inter-register signalling. Ans: Registers are used in common control exchanges to store as well as analyze routing data. They are provided on a

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