open of /dev/tty?? fails

[Kevin P. Kleinfelter]

With AIX V3, open calls on /dev/tty?? do not behave as they do on my AIX 1.2
and my SYSV systems.  Logged in on /dev/tty1, I open /dev/tty1, and it returns
"permission denied." 
In fact, "write" by normal users cannot even write to me when I am logged in
on my AIX V3 system, even though I have done a "mesg -yes".

Executing "echo foo > /dev/tty1" fails.  However, logged in via TCP/IP,
executing "echo foo > /dev/pts/0" works (usually).

What have I configured incorrectly?
-- 
Kevin Kleinfelter @ Management Science America, Inc (404) 239-2347
gatech!nanovx!msa3b!kevin

"Don't hold your finger on the button if the motor ain't goin' roundy-roundy."