The XMIT file transfer system was designed to provide automatic two-way file transfers via an RS-232 connection between two DEC-20's, two VAXen, or one of each. Each system in an XMIT link requires an "inbox" and an "outbox". Copying or renaming a file into the "outbox" means that it will soon disappear and reappear in the "inbox" on the system on the other end of the link. Files placed in "outbox" on the other system appear in "inbox" on your system. Average trip time for small files is about two minutes or less. No special hardware or software is required.