COM1 (DOS) port under DOSMerge : How to get it to work?

[Mike O'Donnell]

We have a CompuAdd 386/20 running uport SYS V and DOSMerge.  I would
like to be able to run the PC version of kermit using the unix 
/dev/tty00 port.  I have tried everything in the DOSMerge book and
nothing seems to work.  Either I am missing something or it just 
doesn't work.  Any insight and / or examples / explanations / etc
will be greatly appreciated.
Thanks

Mike O'Donnell