Master unit, remote unit and multiband transmission system

A remote unit for distributing and combining signals of at least one wireless communication network and of at least one digital network, the remote unit comprising:

• at least one remote modem;
• a remote uplink interface;
• a remote downlink interface;
• a remote uplink combiner;
• a remote downlink splitter;
• a reference frequency receiver;
• and
• a remote transmission unit,
• wherein the remote modem is configured for communication with at least one user terminal and is connectable to the reference frequency receiver,
• wherein the remote downlink interface and the remote uplink interface are configured for communication with a network terminal of the at least one wireless communication network,
• wherein the remote downlink splitter and the remote uplink combiner are configured for connection to a master unit,
• wherein, in a downlink direction, a common signal line is guided from the remote transmission unit to which a reference frequency signal and a data signal of the at least one digital network are uncoupled and fed to the reference signal receiver or the remote modem, and the common signal line in the remote downlink splitter is divided among a plurality of signal lines, which are connectable to the remote downlink interface, and
• wherein, in a uplink direction, a plurality of signal lines are combined in the remote uplink combiner to form a common signal line to which the data signal of the remote modem is connected, and this common signal line in the uplink direction is connectable to the remote transmission unit.