I have 2 BT lines/numbers into my house .... one has ADSL enabled on it,
I need to run both lines out to a new summerhouse in the garden, I _do
not_ want to go down any wireless options (DECT, wireless networks,
routers et al)
I can of course run 2 separate cables from each BT Master Socket in the
house (which are literally side by side) conduited along the route the
cable needs to take, terminating in the usual (B&Q, Homebase etc) BT
type sockets at the other end, however, I fear this will be both time
consuming and more costly, as I have to consider conduit purchase and
fixing. Given my DIY drilling skills, I can't also imagine the conduit
will be level along its length!
Thus, I have found this site :
... which shows (as I see it) 10 different wires (5 pairs)
Am I right I could effectively wire both lines down this cable, and not
have any issues with my voice or ADSL lines, so long as I give due
consideration to ADSL filtering etc?
To all intents and purposes, I'm just adding another telephone extension
for each line (not adding any more kit incidentally, REN value taken
into consideration) which I would like to run down one specific cable.
Is this that cable? Is 5 pairs enough? Only 3 wires are used per
extension aren't they?
It is assumed that only a couple of telephones are to be installed in the
summerhouse and that you don't intend to use the telephone service to connect
a modem at the remote end. In which case it seems suprising that you won't
consider the use of DECT phones which seem the obvious solution.
I wonder about the telephone cable you have selected; it seems odd that there
is no mechnical protection to the "service wires" which would suggest that it
is not designed to be burried. If it was not buried relatively deeply it
could be very easily be damaged.
The problem is .... the ADSL line is the line that *must* run to the
summerhouse, as this is into what the router will plug.
I will also be using one of the lines for a FAX sending service via the
The 2nd line /could/ be DECT, but this would mean the base unit (there
is only the base and one handset) would remain indoors some distance
away. Convenience factor equals put it on the desk in front of me i'm
afraid, and running it down the same cable seemed a good idea.
It won't be buried ... it will be 'pinned' to the side of a house, and
then run along the side bearer of some decking. Very inaccessible, and
very unlikely to suffer damage from digging et al.
If it is a suited cable that will be sited away from potential damage
issues, then is it the right one?
Why not put the router in the house and run a few lengths of CAT5..? You
can use the spare pairs in a CAT5 cable for a phone, so a couple of runs
will give you two computer outlets and two phone outlets.
when I can have one cable, with 2 lines 'in' it and the router
conveniently where I am situated?
Thanks for the suggestion, but I am trying to achieve having as less
cable running along the side of the house as is possible, without the
need for conduit etc to keep costs down.
Can I run CAT5 outside, along a wall which faces the way the weather
generally comes from? Is normal CAT5 weather proof?
Weather proof as long as the outer casing isn't damaged, and the open ends
aren't exposed to the elements. Good quality Grey insulated CAT5 is pretty
well resistant to UV light as well, so it does stand up to being outside OK.
Run it in black 20mm conduit then. BTW colour can help with stopping
cable insulation breaking down as certain pigments will absorb uv, colour
pigments such as black and grey sheath will contain a certain amount of
I have several ells of it running along the outside of various bits of
my house, where I couldn't get under floorboards when cabling up.
It'll degrade over time, same as any cable but will last years unless
I nick it with pruning shears or something. The end points need to be
in waterproof containments however (mine all run back inside the house
to RJ45 faceplates).
OK, question answered, but i am, after all, only trying to actually get 2
telephone line extensions outside and not specifically network PC's.
However, thereafter, I will/would like to plug the router into one of the
extensions, as i do now inside the house, which will enable me to run a PC
in the SOHO on ADSL, and plug in a wireless access point so i can, when it
gets brass monkey cold outside, sit inside the house with my laptop and
connect wirelessly, if neccesary plugging the current DECT telephone units
The question is, will the cable i originally specified allow me to 'run' 2
lines down the same wire? I am, again, only trying to achieve having 'run of
the mill' telephone extensions in the summerhouse/SOHO into which I happen
to want to plug a router.
The cable is described as external, which to me, suggests it will last a tad
longer than a reel of B&Q telephone extension wire...
I can't help feeling some of the replies thus far, whislt very appreciative
of them, are over complicating matters. I have 2 lines; I want 2 extensions
of said lines to run to an outside building, and for the sake of neatness
(and to some degree cost) I'd like to run them down the same cable instead
of conduit .... after which i want to plug my ADSL equipment in, as I would
do were I running an extension to a different room in the house.
It seems straightforward to me (as in simply wiring new extensions in the
house) the only difference is, I want to use one cable to accommodate 2
Sorry if that comes across as arrogant sounding in respect of some of the
answers so far given, but c'est la vie, and I do appreciate the advice
The original post has long gone, so I don't know what the cable is.
However if it has four or more cores arranged in twisted pairs, then
the answer is yes. If it has less than four cores then no, and if
they're not in twisted pairs, then the answer may still be no, as
untwisted pairs will interfere with each other electronically and you
may get impaired performance / loss of modem synch.
You may think so, but CAT5 really is the ideal cable for this. Its
cheap, designed for carrying telecoms signals, and sturdy.
By the way, unless you can clip the cable to a solid brick wall for
the entire length, you'd be /strongly/ advised to put it in cable
duct. Nothing more annoying than sticking a garden spade through your
Yes, but, so is the cable in question i want to use. CAT5 isn't in itself
designed for external use, and I would have the additional cost of conduit,
plus the faffing around of fixing it all up. Cable clipping the cable to the
wall that I want to use seems the better option. I simply want to be able to
get a telphone extension outside, as opposed to inside as it is now.
I have just such a brick wall, then the cable will disappear under decking,
and pop up into the summerhouse.
"I have just such a brick wall, then the cable will disappear under decking,
and pop up into the summerhouse."
WELL DO IT THAT WAY THEN !!!!! No-one here is going to stop you.
But what cable are you going to use? What is the best type of terminal box
to connect to the cable? What's the best way to prevent interference on the
new extension? Will the interference, even the slightest bit, interfere
with the ADSL signal?
They've all been answered in the thread, some of the questions have been
answered many times. All the info' you need to make this job good, and to
have it work as perfectly as this type of thing can, has all been answered
in this thread. But you still sound as though you haven't read any of it.
Or, have you read it all, but don't understand parts of it?
If you do need anything information in the thread clarified, then I'm sure
the person giving the info' will oblige with a more simple explanation for
you. They will, I'm sure, even talk you through the whole thing until the
job is complete.
Good luck with it. Please let us know how it goes.
Thus far I've ben told to use CAT5 more than anything because folk seem to
think my primary reason for wanting *telephone* extensions is computer
I have explained I would *prefer* one wire, one which was suitable for
external use; i highlighted one that i felt would do the job, that is
specifically designed for telephone, but i wanted to know if I could run 2
lines down the same wire, whether or not it would affect my ADSL if I did,
and that i wanted to avoid conduit due to additional cost and DIY time and
trouble fixing it.
Why should I get any more intereference using an external telephone
extension that I do using an internal one for my ADSL?
I have 2 lines coming down one bit of wire from the BT pole to my house
..... the wiring of extensions in my house is all DIY, and works fine.
I just want to know if the cable I have seen will do the job.
The latter, in part, and likewise, some of those who have replied haven't
understood, or realised, my actual aim.
But if i ask for clarification, or oppose an answer because someone suggests
using CAT5 and conduit when I specified I didn't want to, you'll accuse me
of not reading their reply - rock and hard place or what.
You sound like you are pissed off with the thread, the questions I'm asking,
and the general subject matter?
In other words, STFU, get on with it, and if you do screw up, maybe someone
will bail you out, but it won't be you.
Have a good weekend yourself mate .....
No, you've been told CAT5e because its probably the best cable for the
job of carrying a telecommunications signal. If you choose to ignore
that advice, or misinterpret it, or dislike it, thats up to you. You
can use 2.5mm mains cable or piano wire for all we care.
Cat5e is good for this.
You need to mention it again, your original post is long gone.
if it has two sets of twisted-pair cores then yes.
If its not twisted pair, then you can expect a long line length to
introduce interference. See below for the effect.
Wall-mounted RJ11/RJ45 faceplates, inside a dry building. Avoid
termination and joints outdoors.
Don't run it close to mains electrical cables, especially ones with
transient loads on (fluorescent lights, dimmer switches etc). Use
twisted pair cable (like f'rinstance cat5e...). Ideally use shielded
twisted pair tho this is more expensive.
Yes, but how much it will matter will depend on how much. Its a
digital signal. Some interference is ok, more will lose the entire
No special reason, it depends on the environment .Remember tho that
its exposed to the elements, more likely to get wet / uv damaged etc,
hence more chance of leakage between lines.
Hmm, doesn't this mean you've been DACSed? Did you have trouble
getting DSL in the first place? Anyway BT can do this because they've
got special kit. You can't.
Tell us what it is.
Most of us have. You've just not understood, or chosen to
misunderstand, the answers. Synopsis:
1) you need four conductors to carry two telephone signals (strictly
you need six, but if all your phones have their own ringer capacitors,
you'll get away with four in most cases).
2) Cat5e is good for long-extensions with multiple circuits on, as its
better shielded, and has lots of wire pairs.
3) To avoid interference, use twisted-pair cable, keep away from other
electcical conductors & devices, and keep the cable dry.
just because you impose boundary conditions which some consider
unrealistic, doesn't mean people can't keep telling you a better way
to do it... and bear in mind not everyone contributing to the thread
saw your original post (I don't think I did).
Oh, for goodness sake. How about it means exactly what it says?
And FWIW, I personally really am fed up with you. You've been told how
to do this, you won't listen or understand, or don't like the answer.
So like a petulant child, you ask the question again, more angrily, in
the hope that you'll get an answer you do like, even if it is the
wrong one. And then you get upset when people start getting cross with
it certainly won't now, will it? Not when you behave like that.
I beg your pardon, but you started it. I originally posted advice
which was correct based on what I'd read in the thread, and you raged
against it. Doesn't bother me. In this particular reply, I originally
posted a considerable amount of comment on your chosen cable,
explaining how to use it, its suitability, things to watch out for
etc. But I got to this point and thought, what a tosser, screw him, he
can whistle for his help.
This cable will be fine for the job you want to do.
As it states.. It is external grade telecomms cable.
However, be aware it is Petroleum Jelly filled. This is messy to work
with, and flammable. PLEASE limit the length of this cable you run
internally. - Preferably to less than two metres within either building.
Can someone comment on any regs. regarding this?
I believe the BT recommendation is 1.5 metres??
Remove the grit to reply
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