yeah? and? so? who does that? if you're concerned about being intercepted and are still using land lines, then you're really not concerned. we learned that in the 80s. if you're using SMS, you're also not really concerned. friends don't let friends use unencrypted.
I exclusively call landlines from my phone, at least using "actual" phone calls; businesses, to be precise.
For all person-to-person calls, my family and friends have long switched to FaceTime and WhatsApp, which are both encrypted. Why would I pay per minute for a less secure and lower fidelity (HD voice usually does not work internationally) channel?
That said, I really would prefer if the POTS were better secured, given that SSNs and payment card numbers are transmitted over it all the time.
