On Wed, 24 May 2000, you wrote:
> i just wanna ask if it's possible to use a typical DB-9 male-to-female
> serial in conjuction with the APC Back-UPS ? is it ? APC requires these
> cables :
>
> Communications Cable
> APC part # 940-0024C (smart signaling)
> APC part # 940-0023A or AP9823 (simple signaling)
>
> can i use a typical male-female serial cable ? or do i have to twist and
> shout the cable ?
>
The pin-outs are different. Unless you want to construct your own cable,
because the specs are available on the net.
And also, if you plan to buy or construct, get the smart signalling cable.
This tells the PC more than just 'power failure, shut down now', it indicates
if the UPS is running on batteries, and indicates if they are about to run out
and the server must be shut down.
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