Further to the use of a BT 80B RF3 junction box
Since the BTO engineer removed the RF2 which was killing my ADSL i have not experienced any RFI on my telephone system to date. I have also fitted an ADSL Nation XTE-2005 filtered faceplate to my NTE5A box. The whole phone system is now filtered at source. I have installed a separate ADSL feed from the AB terminations on the XTE-2005 to another room and terminated this with an ADSL Nation XT-68 filtered faceplate. My router is connected into this.
I am seeking clarification regarding the following points.
1 Do the XTE-2005 and XT-68 have any common mode filtering in the AB
lines (unfiltered ADSL) performing what the RF3 would do?
2. Do the XTE-2005 and XT-68 have an filtering in the bell wire circuit
feeding the phones.
3. Reading the blurb on ADSL Nationís website, under XTE-2005 it
mentions the including of a ringing capacitor but under XT-68 this is not
mentioned. Are the circuits in the both products the same?
4. Does anyone know if any circuit diagrams of these products, for my own
interest, are available any where. May be someone may have a drawn
schematic from retracing the tracks to/from components and connectors.
5. If there is no RFI detectable and as i do not have specialist equipment to
detect the existence of any localised REIN, is there any benefit to
installing a RF3 box or could the insertion of a RF3 box actually hinder my
BB performance due to some top end filtering/and or insertion losses.
6. If one possible answer to item 5 above is try it and see, can i insert the
RF3, in the AB line before my ADSL extension socket to which my router
is connected. I understand the RF3 should be installed before the
NTE5A box but strictly thatís BTOís domain, but i am only curious with
any possible improvement the RF3 may have on the BB speed.
I may be looking too deep into all of this as have not checked my speed since after BTO engineers visit last week, which was 5Mb/s. Thanking you in anticipation for any information provided.