What cable to use for phone extension used by router
The Invisible Man
telephone extension from the master socket around 10 metres to where it
will be used to connect to 2 Sky TV boxes, a digital phone base unit and
a modem router.
Is there any particular cable to use for the extension? Will it make any
difference?
Because of where I have to run the cable it will not be practicable to
run a separate telephone extension cable and high speed modem cable.
I am very lucky because I am about 70 metres from the telephone exchange
and get up to 6.5megs through a wireless router on a different floor
on the end of a very tatty 20 metre extension cable which does various
90 degree turns.
Once the rooms are changed round both laptop and desktop will be
hard-wired to the modem router.
TIA for any advice.
Dave Saville
>Is there any particular cable to use for the extension? Will it make any
>difference?
>Because of where I have to run the cable it will not be practicable to
>run a separate telephone extension cable and high speed modem cable.
CAT5 or better.
--
Regards
Dave Saville
NB Remove -nospam for good email address
devel...@thuk.co.uk
Dave Saville wrote:
> On Mon, 22 Jan 2007 19:45:58 +0000, The Invisible Man wrote:
>
> >Is there any particular cable to use for the extension? Will it make any
> >difference?
> >Because of where I have to run the cable it will not be practicable to
> >run a separate telephone extension cable and high speed modem cable.
>
> CAT5 or better.
>
not on "running a single telephone extension" you wont :-)
Ethernet cable is quite diferent to phone cable.
You will need to run Cat5e and use RJ45 not RJ11 or that BT thingy that
I can't remeber the name of now.. Ethernet uses all 8 pairs for future
compatability.
devel...@thuk.co.uk
OOPS! soory
I just realised that you wanted to extend your phone network and split
the ADSL of at an extension.
Id still sugest having as short a run of phone cable (the uk.telecom
FAQ will tell you what to use) as possible and run cat 5 as well as the
phone extension.
Rgds M
Ted B
> not on "running a single telephone extension" you wont :-)
No, but Cat5e cable is a very good choice.
> Ethernet cable is quite diferent to phone cable.
If you want to be pedantic can you define ethernet cable and phone cable
please. Ethernet cable means nothing.
> You will need to run Cat5e and use RJ45 not RJ11 or that BT thingy that
> I can't remeber the name of now..
>Ethernet uses all 8 pairs for future
> compatability.
Define ethernet cable again please? Cat 5e networks for example don't
use all the pairs.
Ted.
Jim Howes
> Dave Saville wrote:
>> On Mon, 22 Jan 2007 19:45:58 +0000, The Invisible Man wrote:
>>
>>> Is there any particular cable to use for the extension? Will it make any
>>> difference?
>>> Because of where I have to run the cable it will not be practicable to
>>> run a separate telephone extension cable and high speed modem cable.
>> CAT5 or better.
>>
>
> not on "running a single telephone extension" you wont :-)
>
> Ethernet cable is quite diferent to phone cable.
There is nothing particularly wrong in using CAT5/5E/6 cable for telephony.
It's done all over the place in structured wiring plans.
If the line is carrying ADSL as well as voice, it is vital that you use both
wires of a single pair to carry the phone line. In the normal world, this would
be the blue pair.
Personally, if using CAT5 for extension wiring, I'd not connect anything other
than that; the ADSL filter will regenerate a ring signal if required, and
having a single wire connected from the master socket to extensions can affect
signal quality (but not by anything near as much as not using a twisted pair for
your phone line)
> You will need to run Cat5e and use RJ45 not RJ11 or that BT thingy that
> I can't remeber the name of now.. Ethernet uses all 8 pairs for future
> compatability.
10 megabit uses only four wires (pairs 2(orange) and 3(green)).
100 megabit uses two pairs (same as 10Mbit), but in some situations may use all
four pairs (100-Base-T4). There are some 100Mbit cards that get confused if all
four pairs are not present and wired (which is why, when making a crossover
ethernet cable, you should swap over pairs 2+3, and also swap pairs 1+4)
Most gigabit implementations use all four pairs.
http://www.cisco.com/univercd/cc/td/doc/product/core/cis7300/install/13279sp.htm#wp1015744
As for the connectors in use, you can get modular connectors which provide BT431
outputs, as well as RJ45's, that will snap into the same handy single-gang or
double-gang faceplate. Usually manufactured by Molex.
CPC Part number CS00929 - BT Secondary
Assorted other useful parts...
http://cpc.farnell.com/jsp/search2/browse.jsp?N=500009+401+411&Ntk=gensearch_003&Ntt=EUROMOD
However, my personal preference is for locating the ADSL router as close to the
master socket as possible, and running ethernet and filtered telephone lines
from there outwards. Of course, this is not always possible.
Jim
Ivor Jones
news:1169559645.3...@l53g2000cwa.googlegroups.com
[snip]
> Ethernet cable is quite diferent to phone cable.
Indeed it is, it's better and will carry phone traffic with no problem at
all.
> You will need to run Cat5e and use RJ45 not RJ11 or that
> BT thingy that I can't remeber the name of now.
431A.
Ethernet uses all 8 pairs for future compatability.
You mean 4 pairs, of course..?!
Only if you're running Gigabit or higher. Not really necessary for most
home systems.
Ivor