The key feature for Host systems is remote takeover , while the key feature of BBS software is the messaging or email system . Both Host systems and BBS's provide file transfers and execution of external programs.
Some examples are word processing files, spread sheets, or even the binary programs themselves.
File transfer Protocols are error-checking techniques used during file transfers. There is no one standard that exists for file transfers and few of these file transfer protocols are compatible with each other. The key feature of file transfer protocols is that they automatically detect and correct transmission errors. Electronic order taking is also called E-commerce. BBS's often serve as electronic order taking devices.