On Mon, 12 Sep 2005 06:55:01 GMT, "Paul Ockenden"
<paul@ockenden.NoSPAMTodayThankYou.com> wrote:

>> Centre two on the RJ45 to....
>
>Now I'm confused. One of you says use the centre pins, another
>says the outer pins....

The nice thing about standards is that you have so many to chose
from. To connect to the phone socket (not the phones - they use
RJ12) the Frixbox as I understand it has an RJ45 cable designed to go
directly into an ISDN RJ45 connector or (with an adapter) to plug
into an analogue RJ11 wall socket.

The RJ USOC (see below) numbering scheme applies to
telecommunications circuits, data networks are different. Under USOC
RJ11/12 wiring puts the analogue signal on the centre two pins of the
plug (3 and 4) (RJ11 is numbered 2,3,4,5, RJ 12 is 1,2,3,4,5,6) and
the centre two pins of an RJ45 connector (pins 4 and 5) (RJ45 being
numbered 1-8).

ISDN wiring would put the first pair (terminal equipment transmit) on
RJ45 pins 2 and 5 and the second pair (terminal equipment receive) on
pins 3 and 4.

Ivor Jones has written that the Fritz connector is non-standard and
uses pins 1 and 8 for the analogue and a hunt around www.dslteam.de
shows he is correct. These pins are spare on an ISDN connector and
Fritz have obliviously used them for the analogue connection to avoid
the need to sense the network type. In this case go from 1 and 8 on
the Frieze to 2 and 5 on a BT plug (the outer pins).





--
Peter Parry WPP Ltd http://www.wpp.ltd.uk
Antenna solutions for car, caravan, house, office, boat and tent.
Fixed Telephone wiring guide at :-
http://www.wppltd.demon.co.uk/WPP/Wi...telephone.html