Tahoe rlogin and timed ported to System V?

[Eric Gisin]

Has anyone ported the 4.3-tahoe rlogin and timed to System V
AND made the source freely available?
(I'm interested in an Interactive UNIX version, but any version
will save be useful).

Rlogin looks straight-forward but time-consuming.
I want to enable the support for ~<suspend>, which Interactive
neglected when they added job control.

Timed is difficult because you have to emulate adjtime(2).
Any simple program that acts like a timed slave would do too.

As a related question, I'm curious how different vendors deal with the
select/poll on the tty and socket/stream in telnet.
System Vr3 did not have the ability to poll character devices.
This is not an issue in rlogin, which uses two processes instead of select.
Interactive extended poll to work on ttys and ptys (and pipes),
and select automatically aquires this poll functionality.
How do SCO UNIX or ESIX handle this?