Iain Street wrote: > ----- Original Message ----- > From: "Ron Jones" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Saturday, July 14, 2007 4:26 PM > Subject: Re: [canals-list] Re: Broaband Question > > >> 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) >> > > Do you have a filter on each secondary socket? Our installation has > an NTE5 faceplate on the master socket, which includes the filter. If > I remove line 3, the phones don't ring.
There must be a filter somewhere between the BT line in and the phone. That filter will make the line 3. If the filter is in the master socket then you need line 3 from there to the phone. I assume therefore that your modem/router is in the master socket - thus has no line 3 connected to it. The use of cutting line 3 is where the modem/router is at the end of some extension elsewhere in the house, and the filter is remote from the master socket - the purpose is to stop the line 3 (the portion between the master socket and the asdl filter for the modem/router) acting like an aerial and picking up noise from the high frequency transmissions coming from the modem/router - that noise feeds back into the master socket and causes your sync speed to be lower. 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
