Modem control on ttyS0

[Brian Witowski]

FWIW, I have hooked up dozens of APC UPS's and have always used 9-pin cables
and they have worked fine.

Brian

> -----Original Message-----
> From: linux-users-admin at linux-sxs.org
> [mailto:linux-users-admin at linux-sxs.org]On Behalf Of m.w.chang
> Sent: Tuesday, July 30, 2002 7:47 AM
> To: linux-users at linux-sxs.org
> Subject: Re: Modem control on ttyS0
>
>
>
> maybe you need a full 25-pin serial port.
> there is a signaling line called modem control in the sreial port.
> couldn't remember....lok at the programming model of RS-232
>
>
> > I'm trying to get a APC UPS to work with basic signaling and it keeps
> > complaining that I need modem control enabled
>
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