BIG DEAL !!!!
Like others have said, every phone conversation is monitored by the other side, so for security our side have to make sure the people on our side don't give away too much information. I worked for a Communications Group in Turkey, they monitored every phone conversation in the Middle East, and Europe, back in the mid 80s. Most of the linguist were women, and lived in my dorm. At dinner, or in the day room after dinner, they would laugh and tell about the steamy conversations they had heard that day between Russian Men at work, and their wives at home. These women also picked up some very important information about Russian programs from phone conversations between men and their wives. They also listened to all American traffic as well, in fact their is a sticker on every American phone warning that the US Communications people monitor conversations made on that phone. It was no secret we were listening to the everyone in Europe, because the Russians made no secret they were listening to everyone also.
On any military installation in the US, every phone has a sticker that says your conversation can be monitored. If you have something to hide don't make mention it on that phone.
News Flash, To those that don't know. If you have a cordless phone, your neighbor hood kids could be listening in on all your conversations. It don't take much, any radio receiver that can reach the right frequency. Last summer while visiting my friend in Florida, his old electric guitar amp would pick up his sister's cordless phone signal. We heard all her conversations anytime we were messing with the guitar. Just like we listened in on her phone conversations when we were teenagers. She laughs when we tell her about it, saying the only differance now is that we are no longer dirty teens, just dirty old men.