applications of dtmf - Page 2 - Electronic Circuits Projects Diagrams Free

**Nigel Goodwin** · 6th September 2007, 07:41 AM

Quote:

Originally Posted by simrantogether

Sir yes..

I'll definitely try ..

Actually, i needed some help ...

if possible .. please answer the following questions:

1. can DTMF be used for generating number of phone lines... from one line..

No, it's just two audio notes, harmonically unrelated, played at the same time.

Quote:

2. can DTMF it be used for controlling of stepper motor from Long diatance like 100 kms through phone.

For really slow, very restricted, control yes it could.

Quote:

3. Please tell the name of the example project that can be made on interfacing DTMF with controller..

Display the number dialled on your phone?.

**Nigel Goodwin** · 6th September 2007, 07:53 AM

Quote:

Originally Posted by simrantogether

Sir yes..

I'll definitely try ..

Actually, i needed some help ...

if possible .. please answer the following questions:

1. can DTMF be used for generating number of phone lines... from one line..

No, it's just two audio notes, harmonically unrelated, played at the same time.

Quote:

2. can DTMF it be used for controlling of stepper motor from Long diatance like 100 kms through phone.

For really slow, very restricted, control yes it could.

Quote:

3. Please tell the name of the example project that can be made on interfacing DTMF with controller..

Display the number dialled on your phone?.

simrantogether · 6th September 2007, 09:13 AM

I feel I got it, Thank you Sir..

Quote:

Originally Posted by Nigel Goodwin

No, it's just two audio notes, harmonically unrelated, played at the same time.

It means that just we can do basic operations like detecting the key that is pressed ond other simple operations like detecting dial tone etc.

Quote:

For really slow, very restricted, control yes it could.

yes.. it means that .. it is possible .. (atleast some projects i can meke..)

Quote:

Display the number dialled on your phone?.

Similarly that we have it on our PCO ( public call office ) booth...

Regards,

Simran...

**Nigel Goodwin** · 6th September 2007, 09:53 AM

Quote:

Originally Posted by simrantogether

Sir yes..

I'll definitely try ..

Actually, i needed some help ...

if possible .. please answer the following questions:

1. can DTMF be used for generating number of phone lines... from one line..

No, it's just two audio notes, harmonically unrelated, played at the same time.

Quote:

2. can DTMF it be used for controlling of stepper motor from Long diatance like 100 kms through phone.

For really slow, very restricted, control yes it could.

Quote:

3. Please tell the name of the example project that can be made on interfacing DTMF with controller..

Display the number dialled on your phone?.

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