| Author |
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John Carlyle-Clarke
Guest
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 Posted:
Wed Mar 09, 2005 4:00 pm Post subject:
ADSL over CAT-5e? |
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I'm in the UK and I have an ADSL-enabled BT line coming in next to the
patch panel for a Cat 5e cabled office. Can I extend the ASDL to
another part of the office over the Cat 5?
I suppose I'd need by the patch panel a BT plug -> RJ45 conversion ..
not sure how I would achieve this? Then at the other end, an RJ45 ->
BT socket conversion, which is easy enough. Then I'd plug in the
filter and the modem.
Would this work? |
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Stuart Robinson
Guest
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| Posted:
Wed Mar 09, 2005 4:00 pm Post subject:
Re: ADSL over CAT-5e? |
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It will work for sure, unless the ADSL is on the absolute very limit of
the length from the exchange.
I have wired a few for customers this way, it enables them to move a
private broadband connection around the building.
I prefer to wire the incoming BT pair direct to a RJ45 socket on the patch
panel so that you can treat the ADLS line like any other phone line that
you distribute over the Cat5 network. .
Stuart. |
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Petri Krohn
Guest
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| Posted:
Wed Mar 09, 2005 6:06 pm Post subject:
Re: ADSL over CAT-5e? |
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"John Carlyle-Clarke" <john.cc@nospam.europlacer.co.uk> kirjoitti viestissä
news:Xns961468A292795johncceuroplacercouk@192.168.1.69...
| Quote: | I'm in the UK and I have an ADSL-enabled BT line coming in next to the
patch panel for a Cat 5e cabled office. Can I extend the ASDL to
another part of the office over the Cat 5?
|
Doesn't anybody in the UK use structural cabling for telephony?
Structural cabling = Using the same type of Cat-5 cable + RJ-45 sockets for
telephone, Ethernet, whatever...
| Quote: | I suppose I'd need by the patch panel a BT plug -> RJ45 conversion ..
not sure how I would achieve this? Then at the other end, an RJ45 -
BT socket conversion, which is easy enough.
|
The telephone signal would go on the blue/white pair on pins 4 and 5.
UK phones seem to use an extra wire for the ringer. Is this still in use in
modern phones? Which pin/wire would this go on?
| Quote: | Then I'd plug in the filter and the modem.
|
You only use a (low-pass) filter to block the ADSL high frequencies from
reaching the POTS phones. For connecting a modem you do not need a filter
Yes. Cat-5e cable is just a better version of twisted-pair telephone cable.
(The really interesting question is whether and when you can run 100 Mbps
Ethernet over normal phone wires.)
(Copy to news:uk.telecom.broadband, follow-ups to news:comp.dcom.cabling.)
--
Petri Krohn
Helsinki Neighborhood Networking Association
HelsinkiOpen -- http://www.helsinkiopen.net |
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Paul D.Smith
Guest
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| Posted:
Wed Mar 09, 2005 6:27 pm Post subject:
Re: ADSL over CAT-5e? |
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As per previous poster, yes. One option is to use a NET5 adapter from
http://www.clarity.it to get at the ADSL on its own and then wire this into
your structural cabling.
To answer the other poster's questions, yes, the third "ring the bell" wire
is still required.
Almost nobody has structural cabling in our homes. People use various
standards of telephone cable for phones. Typically this will carry the ADSL
signbal as far as it needs to go.
Paul DS. |
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James Knott
Guest
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| Posted:
Wed Mar 09, 2005 7:38 pm Post subject:
Re: ADSL over CAT-5e? |
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John Carlyle-Clarke wrote:
| Quote: | I suppose I'd need by the patch panel a BT plug -> RJ45 conversion ..
not sure how I would achieve this? Then at the other end, an RJ45 -
BT socket conversion, which is easy enough. Then I'd plug in the
filter and the modem.
Would this work?
|
I'd recommend putting the filter in first, then running the separate phone
and ADSL lines as needed. Another possibility, would be to put the ADSL
modem near the line and then run ethernet from it, to where you need it. |
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John Carlyle-Clarke
Guest
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| Posted:
Wed Mar 09, 2005 10:01 pm Post subject:
Re: ADSL over CAT-5e? |
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"Petri Krohn" <petri.krohn@iki.fi-n-l-a-n-d.invalid> wrote in
news:d0mscv$1h2e$1@news.bbnetworks.net:
| Quote: | "John Carlyle-Clarke" <john.cc@nospam.europlacer.co.uk> kirjoitti
viestissä
news:Xns961468A292795johncceuroplacercouk@192.168.1.69...
I'm in the UK and I have an ADSL-enabled BT line coming in next
to the patch panel for a Cat 5e cabled office. Can I extend the
ASDL to another part of the office over the Cat 5?
Doesn't anybody in the UK use structural cabling for telephony?
Structural cabling = Using the same type of Cat-5 cable + RJ-45
sockets for telephone, Ethernet, whatever...
|
The telephony is done this way - there is an ISDN 2 line and a
digital exchange. The ADSL line however just terminates on a
standard BT master wall socket at the moment.
| Quote: |
I suppose I'd need by the patch panel a BT plug -> RJ45
conversion .. not sure how I would achieve this? Then at the
other end, an RJ45 -> BT socket conversion, which is easy enough.
The telephone signal would go on the blue/white pair on pins 4 and
5. UK phones seem to use an extra wire for the ringer. Is this
still in use in modern phones? Which pin/wire would this go on?
|
They do use this, but in a structured cabling environment, the
splitting from 2 to 3 wires is usually done in an adapter between
the RJ45 wall plate and the phone handset, if required.
| Quote: | Then I'd plug in the filter and the modem.
You only use a (low-pass) filter to block the ADSL high
frequencies from reaching the POTS phones. For connecting a modem
you do not need a filter
|
The use of the filter would really be for jack compatibility. The
filter also serves the purpose of converting between a BT type
telephone socket and an RJ-11 socket which most ADSL modems require.
| Quote: | Would this work?
Yes. Cat-5e cable is just a better version of twisted-pair
telephone cable. (The really interesting question is whether and
when you can run 100 Mbps Ethernet over normal phone wires.)
|
I thought this was true, but I didn't want to assume.
Thanks for your reply, and to the other posters too! A few
different approaches to choose between.. |
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kraftee
Guest
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| Posted:
Thu Mar 10, 2005 12:43 am Post subject:
Re: ADSL over CAT-5e? |
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Petri Krohn wrote:
| Quote: | "John Carlyle-Clarke" <john.cc@nospam.europlacer.co.uk> kirjoitti
viestissä news:Xns961468A292795johncceuroplacercouk@192.168.1.69...
I'm in the UK and I have an ADSL-enabled BT line coming in next to
the patch panel for a Cat 5e cabled office. Can I extend the ASDL to
another part of the office over the Cat 5?
Doesn't anybody in the UK use structural cabling for telephony?
Structural cabling = Using the same type of Cat-5 cable + RJ-45
sockets for telephone, Ethernet, whatever...
I suppose I'd need by the patch panel a BT plug -> RJ45 conversion ..
not sure how I would achieve this? Then at the other end, an RJ45 -
BT socket conversion, which is easy enough.
The telephone signal would go on the blue/white pair on pins 4 and 5.
UK phones seem to use an extra wire for the ringer. Is this still in
use in modern phones? Which pin/wire would this go on?
Then I'd plug in the filter and the modem.
You only use a (low-pass) filter to block the ADSL high frequencies
from reaching the POTS phones. For connecting a modem you do not need
a filter
Would this work?
Yes. Cat-5e cable is just a better version of twisted-pair telephone
cable. (The really interesting question is whether and when you can
run 100 Mbps Ethernet over normal phone wires.)
|
You would think so, but in practice I've visited several sites where it
could not be done, whether it was down to the quality of the patch leads
they were using, the actual contractors standards (extremely doubtful in a
least one instance) when building the network or what, I don't know but even
though the attenuation did not suffer to any great extent there appeared to
be noise issues, effectively blocking the ADSL signal.
On all occasions the problem was resolved by the customers using a router &
then patching the Ethernet output from that thru their panels to give
service to where it was required.. |
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