Modem control on ttyS0

[dep]

begin  Michael Hipp's  quote:
| How do I enable modem control on the ttyS0 serial port?
|
| I'm trying to get a APC UPS to work with basic signaling and it
| keeps complaining that I need modem control enabled.

i would bet that this is a bios issue, along the lines of "wake up on 
modem ring." that is, however, a guess.
-- 
dep

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