"DanG" writes:
The phone lines are safe. You won't feel any shocks.

Not true. The on-hook (phone just sitting there) voltage is nominally
48 V, which you probably won't feel unless your skin is wet. (Don't try
putting your tongue across the terminals though!).

But the ring voltage is something like 90-100 V, so you will feel that
if you're holding onto the phone conductors when someone tries to call
you.

Dave