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DISCUSSION OF 7/8 DATA BITS
Most text data can be represented by 7 bits, while programs and
archives require 8 bits. When configuring an RS-232 link, you must
get both ends to agree on how many bits will be used to represent
the data. In most cases, this boils down to setting your
communication program to match the service you are calling.
Most bulletin boards use 8 bits, while many packet switching
networks (such as TYMNET), VAX systems, and UNIX systems use 7 bits.
Telix and most communications programs (but not all!) are smart enough
to switch from 7 to 8 bits when set for 7 bits but using an
upload/download protocol that requires 8 bits.
If you are calling a new service and don't know which to use, use
8 data bits and no parity. If you see strange characters appeaing
on the screen when you expect text, switch to 7 data bits and even
parity.
See Also:
parity
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