(Introduction to the integration of three networks - what is "three networks"? The "three networks" in "three networks" refers to: a) the traditional telecommunication network represented by the telephone network (including the mobile communication network); b) represented by the Internet (Internet) c) The radio and television network represented by the cable television network; "Three networks" represent the infrastructure of three different industries in the modern information industry, namely the telecommunications industry, the computer industry and the cable television industry? The integration of the three networks The essence of the triple play is not network convergence but business convergence)