Commercial speech, however, is less protected by the First Amendment than political speech, and is therefore subject to greater regulation. The Free Press Clause protects publication of information and opinions, and applies to a wide variety of media.
In computer networking, multicast (one-to-many or many-to-many distribution) is group communication where information is addressed to a group of destination computers simultaneously.
One transponder serving several earth stations simultaneously. Multiple access is a radio transmission scheme that allows several earth stations to transmit in the same time span. This provides the way to network these stations together, either in a Star or a Mesh network.