Suns and UPS tripplite

I'm having some trouble getting my ups to work on my Sun ultra enterprise servers. I have it hooked to serial port b and i have the tripplite power alert software installed and running, but it doesn't see the connection, is there something else i'm supposed to do to make it realize it is hooked to the ups for proper shut down? Is there other free s/w out there that will do teh same thing and work? My users get constant LOST UPS CONNECTION messages in their consoles until I shut the s/w down.

thanks, kym

please reply sun os type .... ups type and the manufacor.....

do you know the acpdeamon?

greetings Pre�y

I'm running sun solaris 2.5.1 (and i cannot upgrade, it's a configured item, cannot change) on a sun ultra, the ups is a tripplite 1500.

thanks for any suggestions