Goza, what you've done is, strictly speaking, 'contrary to BT's intention' in so far as siting the new modem by the master socket. But personally, I can see nothing wrong with what you've done, nor can I understand the insistence of BT in always siting the modem at the master socket. I guess it must be something to do with BT being reluctant to otherwise take on the responsibilty for any extension wiring (since I guess they take on everything up to and including the modem).
You yourself, Goza, have been fortunate in being able to find a way of neatly laying an extension lead but please don't assume that this is always possible, or even aesthetically desirable, as many of us live in single-storey places with solid floors and thick brick partition walls.
For those of us who can't find an easy solution like yours, there are other ways of achieving the same, using a succession of wall penetrations and additional wall-mounted socketry. RobertoS has recently suggested a method, one that assumes making an unfiltered
extension from the back of the master socket. (The extension connections on a standard NTE5 are filtered, I gather). This would involve replacing the consumer bit of the master NTE5 master socket with, say, an XTE-2005, and using either an XTF85 wall socket on the end of the extension or an RJ45 wall socket. The situation with BT and NTE5s, though, seems to be a bit fluid at present and there's rumour that BT can now provide an NTE5 with unfiltered connections at the rear.
I think the thing to do is let the BT technician install the modem by the NTE5, then yourself change the location of the modem as soon as possible. Making an unfiltered extension should not, in principle, affect the performance of the line, provided the extension's done with good workmanship and good-quality materials are used. I think the new rules now allow for up to 30 metres of customer extension, anyway. As I say, you yourself have now, in effect, done this, but have been fortunate enough to have managed it using just long patchleads.
Edited by meditator (Tue 15-Mar-11 11:56:20)