In Banja Luka, he says, there are three points for phone tapping, the locations of which are well known, as are the persons performing these tasks. One phone tapping point is located in Bijeljina, two in Serb Sarajevo and one in Trebinje. Without background noise Many people believe that when a phone is tapped some sort of noise is heard on the telephone line such as clicking, noises or voices. The majority of phone-tapping devices do not make any sound. If you hear someone else's conversation on your phone, you may have simply picked up someone else's line, which a common problem here.
Cordless phones can also pick up other people's conversation.
This can occur if you and your neighbor both have cordless phones which transmit at the same frequency.