ADSL over CAT-5e?
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Posted by John Carlyle-Clarke on March 9, 2005, 2:00 pm
Please log in for more thread options 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? filter and the modem. Would this work? | ||||||||||||||||||||||||||||
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Posted by James Knott on March 9, 2005, 12:38 pm
Please log in for more thread options John Carlyle-Clarke wrote: > 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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Posted by Petri Krohn on March 9, 2005, 6:06 pm
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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? 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.) (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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Posted by Paul D.Smith on March 9, 2005, 4:27 pm
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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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Posted by John Carlyle-Clarke on March 9, 2005, 8:01 pm
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> viestissä
> >> 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. >
>> 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. >> 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. >> 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.. | ||||||||||||||||||||||||||||
not sure how I would achieve this? Then at the other end, an RJ45 ->