TDCC is an exceptionally simple IRC file server method (presumably standing for Trivial DCC). In a TDCC server, typing the trigger immediately initiates a file send. Unlike XDCC or fserve there are no file listings or chat windows, simply a send. As such, this kind of server is usually used for serving single extremely small files, such as a text file containing the channel rules (typically on the trigger "!rules"). Most decent IRC script packages such as UPP or Sysreset include a TDCC function.