Re: SIA, Contact ID, 4/2, 3/1

["Just Looking" <nospam@xxxxxxxxxx>]

For the most part modems are built into panels these days. There are add on
dialers for fire panels, as well as old slave dialers here and there. Modem
speeds in alarm panels are a function of the price of the panel itself.
Unless or until folks are willing to pay more, or the cost of the chips
themselves change, it's likely to stay the way it is.

"JohnO" <johno@@&%heathkit##.com> wrote in message
news:eI3Si.15374$JD.13275@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> > I'll let Mark Leuck answer about SIA, but I can tell you about 4X2 3X2
> > and CID.
>
> (I've been out of town a few days...) I appreciate the SIA code list, but
> that doesn't give me much in the way of the SIA Big Picture. Help me out,
> Mark...
>
> After a bit of googling, I found some posts from 2002 that say SIA is a
> modem-based approach, where SIA has defined the signaling protocols and
> alarm codes.
>
> Questions: Is SIA widely used? Why or why not? Still 110 and 300
baud? ---Is
> the idea that 110/300 is plenty fast enough for a pile of codes, and more
> reliable than V.42bis and all that new fast stuff? These modems, are they
> typically standard external boxes with serial cables, or built into the
> panel or mainboard?
>
> Thanks!
>
> -John O
>
>
>