In article ,
"nicoll" writes:
I have run in cat5E cable from our stair cupboard to various rooms in the
house. I use these for a network and for our analogue telephone line
extensions.

The terminations are a bit of botch at the moment and I intend to fit a
small patch panel and terminate all cat5E cables in the panel. The remote
end of each cat 5 cable will be terminated in a RJ45 outlet.

Searching the web I'm struggling to find and easy way to patch our BT phone
lines to the panel.
I have found RJ45 plugs to BT sockets which would allow me to plug a phone
into a RJ45 outlet. But at the panel end I want the opposite a BT plug to
RJ45 socket to fit in the BT socket so I can then patch to the panel. Do
these things exist or is there and easier way to achieve what I want.

I made them using an RJ45 plug, and a BT phone plug on a patch cable.
Actually, I managed to get two patch cables into the RJ45, thus giving
me up to two phone circuits over each cat 5 4-pair.

There appears to be no standard for mapping the phone connections to
RJ45 pins. I found 3 different manufacturer's adapters, and they all
used different mappings.

Secondly to connect my broadband router to the patch panel I'd like a RJ11
to RJ45 patch lead. At the moment I'm doing this with a two leads and a RJ11
to BT coupler connected to a BT to RJ45 coupler.

Not sure why you want to route the broadband across the house.
I suggest putting your master socket, broadband router and hub
all in the stair cupboard.

I hope if standard parts are available I won't have problems with connecting
the correct pairs.

For phone over RJ45, there is no standard.

--
Andrew Gabriel