The following sections describe how to configure serial ports for UUCP.
People often get confused about running UUCP in 7 bits vs. 8 bits vs. even vs. odd parity. Here's what's really going on and how to deal with it. Both the caller and receiver must agree on parity (even, odd, none) during the login sequence. Seven- or 8-bit word length often doesn't matter if you “do the right thing” with parity.
Once the uucico's are running, UUCP's own protocol handles all these issues for you, but you need to be concerned with it during login.
You can set up four parity-related options during the login chat.
P_ZERO—8 bits, no parity.
P_EVEN—7 bits, even parity.
P_ODD—7 bits, odd parity.
P_ONE—7 bits, “1” or ...