Depends on which state you reside in.....
In my State the North Carolina ruling is that as long as one person on the line knows they are being recorded than it is 100% legal. Also admissable in court. Just went through a nasty seperation. She should have watched what she said on the phone lol.
"The U.S. federal law allows recording of phone calls and other electronic communications with the consent of at least one party to the call. A majority of the states and territories have adopted wiretapping statutes based on the federal law, although most have also extended the law to cover in-person conversations. 38 states and the D.C. permit recording telephone conversations to which they are a party without informing the other parties that they are doing so.
12 states require, under most circumstances, the consent of all parties to a conversation. Those jurisdictions are California, Connecticut, Florida, Illinois, Maryland, Massachusetts, Michigan, Montana, Nevada, New Hampshire, Pennsylvania and Washington.
It is illegal under all jurisdictions to record calls in which one is not a party.
A complete state-by-state set of regulations regarding telephone call recording may be obtained in the following report published by The Reporters Committee for Freedom of the Press:
http://www.rcfp"