RE: Modem questions

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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