The FCC regulations were enacted on June 27 , 1996 .
Changes were to take effect in the 100 largest Metropolitan Statistical Areas by October 1 , 1997 and elsewhere by December 31 , 1998 .
The FCC regulations were enacted on June 27 , 1996 , and changes were to take effect in the 100 largest Metropolitan Statistical Areas by October 1 , 1997 and elsewhere by December 31 , 1998 .