The President signed the Communications Act in June 1934. Some parts of it came into force on 1st July 1934 while the rest of it became effective on 11th July 1934.
Earlier while the Interstate Commerce Commission regulated telephone service, Federal Radio Commission monitored broadcasting service. This divided but occasionally overlapping domain created a lot of confusion by and between the two authorities. The Act replaced the Federal Radio Commission with the Federal Communications Commission (FCC). It also transferred the regulation of telephone services from Interstate Commerce Commission to the said FCC. Thus the telecommunications sector was put under the umbrella of one regulatory agency.
The Communications Act of 1934, which underwent several amendments in more than six decades of its existence, has nevertheless withstood the test of times in an era of rapid technological advancement and social transformation.
(More http://www.cybertelecom.org/notes/communications_act.htm )
To bring about the first major overhaul of the telecommunication policy in almost 62 years the congress passed the Telecommunications Act of 1996. On 3rd January 1996 the Congress made major changes to the Communication Act with the new Telecommunications Act of 1996.
( More http://www.museum.tv/archives/etv/U/htmlU/uspolicyc/uspolicyc.htm)