What is a remote bridge?
A bridge as described above that has an Ethernet interface on one side and a serial interface on the other. It would connect to a similar device on the other side of the serial line. Most commonly used in WAN links where it is impossible or impractical to install network cables. A high-speed modem (or T1 DSU/CSUs, X.25 PADs, etc) and intervening telephone lines or public data network would be used to connect the two remote bridges together.