What can an oscilloscope be used for with phones?

[bdoss2006]

I was curious if they could be useful in any way.

[FABphones]

The Search option (above) entering the word 'oscilloscope' will give you a minimum (as of this post) 35 results. That should start you off nicely on a read up.

[bdoss2006]

The Search option (above) entering the word 'oscilloscope' will give you a minimum (as of this post) 35 results. That should start you off nicely on a read up.

well looks like they can be used to check the speed of a dial. How exactly do you do that? I thought they might could be useful with checking fingers maybe.