interception

Each party to a telephone conversation takes the risk that the other party may have an extension telephone and may allow another to overhear the conversation. When such takes place there has been no violation of any privacy of which the parties may complain. Consequently, one element of Section 605, interception, has not occurred.

Defined by the Supreme Court in - Rathbun v. United States, 355 U.S. 107 (1957).