One Thing I Don't Understand About Fibre
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One Thing I Don't Understand About Fibre
20-06-2011 5:08 PM
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When a fibre cable eventually connects to your street box surely all the normal house connections running from that box must improve by leaps and bounds?
Or is the fibre connection completely separate, not replacing the original box to exchange copper wires?
If it is won't we end up with a first and second class telecoms system?
Re: One Thing I Don't Understand About Fibre
20-06-2011 5:12 PM
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Re: One Thing I Don't Understand About Fibre
20-06-2011 5:56 PM
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I had this same conversation with the engineer who installed my FTTC. Basically voice still runs on the same copper line between your house and the exchange, it is only data which runs over fibre from the green box.
James
Re: One Thing I Don't Understand About Fibre
20-06-2011 7:57 PM
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The point I'm trying to make, if that's the case, won't we all end up with ADSL speeds just like we were living next to the exchange?
And if that is the case, paying extra for a bit higher fibre speed won't look that attractive.
Re: One Thing I Don't Understand About Fibre
20-06-2011 8:12 PM
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Re: One Thing I Don't Understand About Fibre
20-06-2011 8:20 PM
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And will your ADSL connection improve because of that and if not why not?
Re: One Thing I Don't Understand About Fibre
20-06-2011 8:25 PM
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FTTP => Fibre all the way to the premises.
FTTC will definitely improve your speeds, as the much shorter distance to the cabinet will enable higher sync speeds. If you are 700m from the cabinet, you will get sync speeds of up to 24Mbps.
Re: One Thing I Don't Understand About Fibre
20-06-2011 8:39 PM
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ADSL is up to 24M
The telephone, PSTN, is copper from the exchange to the house via the cabinet. When fibre is used it's teed in with the PSTN at the cabinet.
Re: One Thing I Don't Understand About Fibre
20-06-2011 9:33 PM
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The existing copper cable to the exchange remains for voice frequencies, it does not used the fibre for voice.
The new big green box terminates the fibre connection from the exchange this is then tied into the existing copper connection to your house. In the picture you can see the IDC section of the new cabinet. This is a distribution patch panel which has all the existing cabinet connections on one side and the fibre connections on the other (the electronics on the left side of the cabinet convert the fibre signal into a copper pair on the fibre side of the patch panel).
When FTTC is installed, a link is fitted in the new cabinet to link the fibre to your existing copper pair to your house. The ADSL signal is then removed from the copper connection from the exchange and your broadband connection signals then come down the fibre, then via the patch to your copper pair. The DSLAM in the new green cabinet then negotiates with your fibre VDSL router to establish the speed of connection between your house and the cabinet.
Re: One Thing I Don't Understand About Fibre
21-06-2011 12:28 AM
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I expect eventually it won't be. Sometime after everyone has bought into the fibre "dream".
Re: One Thing I Don't Understand About Fibre
21-06-2011 12:40 AM
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Quote from: billnotben So it is separate.
I expect eventually it won't be.
It would seem quite logical that if new infrastructiure is provided to, say, a new housing development in an area served by a fibre enabled exchabge then it might save BT money if they don't have to lay copper as well as fibre to the cabinet (same way that Virgin media currently works in cablle areas telephone calls as well as broadband [+TV] all down the same fibres), they can still give a speed limited service on a line that's 'up to 40meg' and charge a premium for those that take advantage of BT's cost saving on copper wire
At any given moment in the universe many things happen. Coincidence is a matter of how close these events are in space, time and relationship.
Opinions expressed in forum posts are those of the poster, others may have different views.
Re: One Thing I Don't Understand About Fibre
21-06-2011 1:28 AM
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Re: One Thing I Don't Understand About Fibre
21-06-2011 2:53 AM
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The problems that BT has unlike Virginmedia are
1. They have to supply a telephone service to every household. Unlike VM which only urban areas. Not cost effective to use fibre and place equipment into street cabinets for small population areas. Cheaper to run to an exchange using copper.
2. BT are under an obligation for the telephone service to work when there is a power cut believe VM are not and their system will not. BT can't fit a backup generator to each cabinet.
Re: One Thing I Don't Understand About Fibre
21-06-2011 8:45 AM
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Quote from: itsme BT are under an obligation for the telephone service to work when there is a power cut believe VM are not
I can believe that but it doesn't really make sense: If a house only has a VM telephone line then that suggests they don't have the right to emergency calls during a power cut, for the same service type the same rules ought to apply.
At any given moment in the universe many things happen. Coincidence is a matter of how close these events are in space, time and relationship.
Opinions expressed in forum posts are those of the poster, others may have different views.
Re: One Thing I Don't Understand About Fibre
21-06-2011 9:38 AM
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I live out in the countryside, where currently I get the full 8Mbps of ADSL_Max, but we have mains power interruptions several times a week.
I have overcome the local mains power problems by running separate UPS for each of my PCs, router, phones, PVR, TV, and heating boiler !
This setup gives me uninterrupted internet and phone access for about three hours, which is usually enough for most outages.
In this hypothetical case, if in the distant future BT put FTTC into the cabinet (outside my front door), do you think that I will lose my internet connection during a power cut - if I switch to fibre ?
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