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Connect a 470 ohm resistor across the line to take it 'off-hook'
Different languages are strange.
A can of beer "opens", not a phone line.
A phone line goes "off hook".
If a can of beer goes off hook then you are plastered and should not drink any more beer.
But many weird things happen in Syria? Like hardly any alcohol in beer?
A 470 ohm resistor across a North American telephone line will dissipate about only 0.21W which is not a lot. Use a 0.5W resistor in opean air and it will be fairly warm, not hot.
Your country is very strange:i measured the current across 680 ohm/4W the value of current is 250mA at least, what is ur opinion about it?
i measured the current across 680 ohm/4W the value of current is 250mA at least, what is ur opinion about it?
Your country is very strange:
No beer.
Extremely high telephone line current.
I won't talk about your religion (Muslim?).
250mA in 680 ohms produces 42.5W which will quickly smoke a 4W resistor. Maybe the current is only 25mA.
Current is measured in series with the load, not "across" the load.