connection between 2 ultrix machines with null cable

[Benjamin J. Anello]

I am having a problem getting a connection between two ultrix computers.
My ultimate goal is to use uucp between these systems.  It seems that
I can get the connection to work if I reboot 1 machine but after a few
connections, the characters only travel in one direction (ie: I can send
characters but I can't receive them.)  I've got shared set on the
terminal line and the getty process is running (in fact, I caught the
receiving machine out of getty and into login) but my sending host still
acts like it is not receiving the login prompt (using uucico with the
flags -r1 and -x9).  It still looks for ogin:.

Is there something out there that locks terminal lines such that they
receive characters and not send any?  Any help would be appreciated :)

Thanks

BJA