From: William Levak (wlevak_at_cyberspace.org)
Date: 2002-05-30 02:26:14
On Wed, 29 May 2002, Ray Bryan wrote:
> On Wed, May 29, 2002, at 03:16 PM, William Levak wrote:
>
> >
> > I have a Commodore 1670 modem with 4 dip switches next to the telephone
> > connector. My manual mentions only 3 switches. Does anyone know what the
> > fourth switch is for (if anything)?
>
> There were 2 models of the 1670 though I do not know why. Th book you have is
> for one type and the modem is the other the switch functions are not quite
> the same as I recall- and I have the docs to prove it.
>
> 3 switch model sw1 up -- regular home/single line
> dn -- PBX multi-line
> sw2 up -- Amanlog loopback seft-test
> dn -- normal operation
> sw3 up -- no carrier detect signal
> dn -- for carrier detect signal on pin h-k of the edge connector
>
> 4switch model sw1 dn -- Auto answer suppressed
> up -- answer on 2nd ring
> sw2 dn -- carrier detect on H-K edge of connector
> up -- no carrier detct
> sw3 dn -- enable the speed indicate signal to the computer
> up -- disable speed indicate
> sw4 dn -- DTR always on
> up -- DTR normal computer controls DTR signal
Well, there must be 3 models then. When I set switch 2 up on the 4 switch
model, I get the loopback test.
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