My Fritzbox has an RJ45 on the back which can connect to either analog
or ISDN phone lines. It comes with an rj45 - rj45 lead, plus some adaptors
for the German phone system... useful!
Does anyone know the wiring I need to connect this RJ45 socket to a UK
phone line? I did a google, and a search on ebay, but apparently there's an
issue of primary or secondary, full master or not, etc. All a bit beyond me!
>
> My Fritzbox has an RJ45 on the back which can connect to either analog
> or ISDN phone lines. It comes with an rj45 - rj45 lead, plus some adaptors
> for the German phone system... useful!
>
> Does anyone know the wiring I need to connect this RJ45 socket to a UK
> phone line? I did a google, and a search on ebay, but apparently there's
> an issue of primary or secondary, full master or not, etc. All a bit
> beyond me!
>
> Help?
>
> P.
Almost any telephone shop has the adapter for it.
Old modems had the adapters so you might look in an old box
or a discarded card and find it still there.
"Paul Ockenden" <paul@ockenden.NoSPAMTodayThankYou.com> wrote in message
news:3gTUe.14343$VB1.4740@newsfe1-gui.ntli.net...
>
> My Fritzbox has an RJ45 on the back which can connect to either analog
> or ISDN phone lines. It comes with an rj45 - rj45 lead, plus some adaptors
> for the German phone system... useful!
>
> Does anyone know the wiring I need to connect this RJ45 socket to a UK
> phone line? I did a google, and a search on ebay, but apparently there's
an
> issue of primary or secondary, full master or not, etc. All a bit beyond
me!
>
> Help?
>
Hi Paul
If its using the standard pins or RJ45 which are 4 and 5, You will need a
Master Adaptor , Sometimes called PBX Master
such as http://cpc.farnell.com/jsp/endecaSea...=CS11892&N=411
On Sun, 11 Sep 2005 13:17:57 +0100, "Ian" <spam"AT"bathfordhill.co.uk>
scrawled:
>If its using the standard pins or RJ45 which are 4 and 5, You will need a
>Master Adaptor , Sometimes called PBX Master
>such as
>http://cpc.farnell.com/jsp/endecaSea...=CS11892&N=411
>
Close, but no cigar. Wrong way round that one.
I'd make my own lead so I'm struggling to find a pre-made adapter
anywhere. You should be able to just stick a normal BT-RJ11 lead in
from any standard analogue modem.
--
Stuart @ SJW Electrical
"Paul Ockenden" <paul@ockenden.NoSPAMTodayThankYou.com>
wrote in message
news:3gTUe.14343$VB1.4740@newsfe1-gui.ntli.net
> My Fritzbox has an RJ45 on the back which can connect to
> either analog or ISDN phone lines. It comes with an rj45 - rj45 lead,
> plus some adaptors for the German phone system... useful!
>
> Does anyone know the wiring I need to connect this RJ45
> socket to a UK phone line? I did a google, and a search
> on ebay, but apparently there's an issue of primary or
> secondary, full master or not, etc. All a bit beyond me!
> Help?
>
> P.
If it's the analogue/ISDN port it uses pins 1 and 8, the outermost two,
it's a non-standard pinout arrangement.
"Paul Ockenden" <paul@ockenden.NoSPAMTodayThankYou.com> wrote in message
news:3gTUe.14343$VB1.4740@newsfe1-gui.ntli.net...
>
> My Fritzbox has an RJ45 on the back which can connect to either analog
> or ISDN phone lines. It comes with an rj45 - rj45 lead, plus some adaptors
> for the German phone system... useful!
>
> Does anyone know the wiring I need to connect this RJ45 socket to a UK
> phone line? I did a google, and a search on ebay, but apparently there's
> an
> issue of primary or secondary, full master or not, etc. All a bit beyond
> me!
>
> Help?
>
> P.
>
> Almost any telephone shop has the adapter for it.
> Old modems had the adapters so you might look in an old box
> or a discarded card and find it still there.
>I thought old modems used RJ11s, not RJ45s...
>
They do, as do new ones too. An RJ11 plug will fit in an RJ45 socket
though, but as someone else has pointed out in this thread, pins 1+8
are used so this wouldn't work as RJ11's only go up to 6 pins. They
also have a tendancy to malform pins 1+8 in the RJ45 socket too,
sometimes.
--
Stuart @ SJW Electrical
>Does anyone know the wiring I need to connect this RJ45 socket to a UK
>phone line? I did a google, and a search on ebay, but apparently there's an
>issue of primary or secondary, full master or not, etc. All a bit beyond me!
>
If you can't source an adapter for this then drop me an email and I'll
make you one.
--
Stuart @ SJW Electrical
>Does anyone know the wiring I need to connect this RJ45 socket to a UK
>phone line? I did a google, and a search on ebay, but apparently there's an
>issue of primary or secondary, full master or not, etc. All a bit beyond me!
Centre two on the RJ45 to a master socket (or PABX master) pins A and
B or 2 and 5 (depending on how it is labelled). 2 and 5 on a slave
will work but you may get no ringing signal on the phone.
"Paul Ockenden" <paul@ockenden.NoSPAMTodayThankYou.com> wrote in message
news:9D9Ve.15472$VB1.8954@newsfe1-gui.ntli.net...
> > Centre two on the RJ45 to....
>
> Now I'm confused. One of you says use the centre pins, another
> says the outer pins....
>
> P.
>
Hi Paul.
The standard for a phone onRJ45 is the center pins, But the socket you refer
to is a dual use, Both ISDN and POTS. so it would make sense to use 1 and 8
but who knows.
I would raise a support call with AVM if I were you. Or get your meter out
and see what is happening on pins 1 and 8
"Ian" <spam"AT"bathfordhill.co.uk> wrote in message
news:11iacqbq6pstp4c@corp.supernews.com
> "Paul Ockenden" <paul@ockenden.NoSPAMTodayThankYou.com>
> wrote in message
> news:9D9Ve.15472$VB1.8954@newsfe1-gui.ntli.net...
> > > Centre two on the RJ45 to....
> >
> > Now I'm confused. One of you says use the centre pins,
> > another says the outer pins....
> >
> > P.
> >
> Hi Paul.
>
> The standard for a phone onRJ45 is the center pins, But
> the socket you refer to is a dual use, Both ISDN and
> POTS. so it would make sense to use 1 and 8 but who knows.
>
> I would raise a support call with AVM if I were you. Or
> get your meter out and see what is happening on pins 1
> and 8
>
> Ian
My Fritz!Box definitely uses 1 & 8, I can see it in the plug. It's a
different model to Paul's though so it may be different wiring but if the
socket has the same purpose it's unlikely.
>> 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" <peter@wpp.ltd.uk> wrote in message
news:hadai11kvcl33i500vfjhrp83a4d5d8j3m@4ax.com
[snip]
> 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).
Hmm, now this is where it gets interesting. The cable supplied with my UK
spec. Fritz!Box has an RJ45 (pins 1 and 8) wired directly to a standard BT
plug. The instructions supplied say that this can be plugged directly into
*either* an analogue phone socket *or* an ISDN connection. Now I have
never used ISDN but I have seen photographs of the terminal equipment and
aren't they standard phone sockets..?
>Hmm, now this is where it gets interesting. The cable supplied with my UK
>spec. Fritz!Box has an RJ45 (pins 1 and 8) wired directly to a standard BT
>plug. The instructions supplied say that this can be plugged directly into
>*either* an analogue phone socket *or* an ISDN connection. Now I have
>never used ISDN but I have seen photographs of the terminal equipment and
>aren't they standard phone sockets..?
>
Nope.
Well, yes, kind off. ISDN is generally presented on RJ45 connectors
via something like an NTE8 (littleish grey box). The ISDN Home and
Business Highway services supplied ISDN on the RJ45 sockets but as
part of BT's equipment also had a terminal adapter (large white box
with 2 blue RJ45's and 2 BT sockets) which effectively converts ISDN
to POTS, hence the provision of standard BT sockets on an ISDN
service, which aren't actually ISDN, just standard analogue ports.
--
Stuart @ SJW Electrical
>Hmm, now this is where it gets interesting. The cable supplied with my UK
>spec. Fritz!Box has an RJ45 (pins 1 and 8) wired directly to a standard BT
>plug. The instructions supplied say that this can be plugged directly into
>*either* an analogue phone socket *or* an ISDN connection. Now I have
>never used ISDN but I have seen photographs of the terminal equipment and
>aren't they standard phone sockets..?
No, ISDN uses RJ45 and (after the BT Network Terminating box) two
pairs of wires all of which are required. Using the 1/8
configuration for analogue means that using their supplied cables you
plug RJ45/RJ45 for ISDN and BT/RJ45 for analogue and can't get it
wrong.
http://cgi.ebay.com/ws/eBayISAPI.dll...MESE%3AIT&rd=1
"Paul Ockenden" <paul@ockenden.NoSPAMTodayThankYou.com> wrote in message
news:3gTUe.14343$VB1.4740@newsfe1-gui.ntli.net...
>
> My Fritzbox has an RJ45 on the back which can connect to either analog
> or ISDN phone lines. It comes with an rj45 - rj45 lead, plus some adaptors
> for the German phone system... useful!
>
> Does anyone know the wiring I need to connect this RJ45 socket to a UK
> phone line? I did a google, and a search on ebay, but apparently there's
an
> issue of primary or secondary, full master or not, etc. All a bit beyond
me!
>
> Help?
>
> P.
>
>
RJ45 to BT phone... 
Linear Mode
