Capture Telephone Signal From Oscilloscope

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I would like to use Oscilloscope to capture the signal from telephone line.

Do you any circuit to take out the telephone line signal and display at Oscilloscope.

Thanks.
 

One option will be to use audio/telecommunications isolating transformer.
Connect primary to the telephone line (you may need additional >1kΩ resistor in series), connect one end of the secondary to the oscilloscope GND and pick-up signal from the other end.
Try to find 600Ω-to-600Ω, 1kΩ-to-1kΩ, or similar, miniature transformer with frequency bandwidth <300Hz and >4000Hz. They are readily available at all electronic stores ..
Regards,
IanP
 

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