Andrew Smith wrote:
> Though one of the earlier posts in this thread seemed to imply that
> microfilters have their own ring capacitor built in? If this is true
> you wouldn't need the third wire.
>
> Can anyone confirm if they do?
>
They do.  And as you *have* to have a mcrofilter between the "line" and the 
"phone", then line 3 is 100% redundant.
(all my phones ring just dandy, and there is *no* line 3 running around my 
house)

Ron Jones
Process Safety & Development Specialist
Don't repeat history, unreported chemical lab/plant near misses at 
http://www.crhf.org.uk
Only two things are certain: The universe and human stupidity; and I'm not 
certain about the universe. ~ Albert Einstein 


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