For two-way communication, a Point-to-Point Duplex Transmission may be used
. This allows data to be sent and received by the same equipment over the same connection, making it a great option for transporting data. This option is also used for private corporate networks, telephone service, content distribution and many other applications. Point-to-Multipoint Transmission is a similar topology and is used by consumers for Internet access in their homes. It is also used by companies for their corporate television networks, giving them the ability to deliver content to their many locations scattered across the country. Mobile Antenna Service is used by television stations to beam live video and audio back to the station using a one-way transmission from a mobile satellite truck up to the orbiting satellite and back down to the fixed base station.