 In the United Kingdom, a terrestrial "multiplex" (usually abbreviated "mux") has a fixed bandwidth of 8 MHz CODFM of interleaved H.222 packets containing a number of "channels".In the United States, a similar arrangement using 6 MHz 8VSB is often described as a "channel" with "virtual sub-channels".In regards to television, the term multiplex is often used to refer to a single broadcaster offering multiple channels of programming as a single bundle to its subscribers.