computers use different ways of representing lines of text and line
breaks. In ASCII mode, the text is converted to a standard format, a
sequence of character octets with CRLF between the lines. The receiving
computer converts this to the format use at the receiving end.
computers store text in different byte sizes, this is in ASCII mode
converted to 8-bit bytes before transmission.
- In ASCII
mode, character set transformation may occur, if the sending and receiving
computers use incompatible character sets.
- In binary
mode, the binary data are mapped on a sequence of octets, which at the
receiving end is mapped back to the same binary data as before the transmission.