Anybody with a clue as to how a telephone call duration counter can be designed?

Consideration to fixed or land line telephones not mobile phones

And any possible components to use in such a project

3 Answers

  • 1 decade ago
    Favorite Answer

    Most phones these days have these. Im pretty sure any caller ID phone will have this built in. If not just attach a stopwatch to the phone.

  • Anonymous
    1 decade ago

    Get a phone and take it apart. See how it works. Then figure it out.

  • 1 decade ago

    mmmm...i have a raging clue right now ;)

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