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Anonymous
(Unregistered)Sun 11-Mar-12 22:25:10
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''fibre optics ''


[link to this post]
 
Did BT GPO use fibre under roadside manhole covers for anything before broadband ?
If so what year did it start and what was it used for ?

Andy
Administrator MrSaffron
(staff) Sun 11-Mar-12 22:26:58
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Re: ''fibre optics ''


[re: Anonymous] [link to this post]
 
Yes, and many many years, knew people splicing fibre in 1996
Leased lines, and the old ATM network that linked all phone exchanges.

Andrew Ferguson, andrew@thinkbroadband.com
www.thinkbroadband.com - formerly known as ADSLguide.org.uk
The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User JonRennie
(knowledge is power) Mon 12-Mar-12 07:47:53
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Re: ''fibre optics ''


[re: Anonymous] [link to this post]
 
My first fibre service from BT was installed in 1989, previously 'high' speed services were delivered to the site over transverse screened copper cable.

wink Comms is hard wink


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Standard User ionic
(fountain of knowledge) Mon 12-Mar-12 07:53:10
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Re: ''fibre optics ''


[re: MrSaffron] [link to this post]
 
The ISDN lines in this building came in on fibre in 1996 as part of a new build
Standard User greenglide
(member) Mon 12-Mar-12 09:27:02
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Re: ''fibre optics ''


[re: Anonymous] [link to this post]
 
BT used fibre many, many years ago for voice lines - the dreaded TPON - Telephony over Passive Optical Network.

This leap into new technology (60's and 70's I think?) caused problems with subscribers in TPON areas not being able to get ADSL until a "copper overlay" was installed - installing copper pairs instead of the TPON fibre.

Milton Keynes was the classic sufferer from this.

The logic of replacing optical with copper (for ADSL) and then with FTTC amazes me but GPO / BT always had a habit of either doing wonderful thing with old technology (the original STD dialing with Strowger electro mechanical kit) or getting stuck down a technical dead end (at the time) with TPON.

FTTC in 10 years time will probably seem a stupid move as well!

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Standard User Ribble
(member) Mon 12-Mar-12 09:44:37
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Re: ''fibre optics ''


[re: Anonymous] [link to this post]
 
Fibre has been used in the trunk (national ) network since at least the 70s, and has been used in the local access network for leased lines since the 80s.
BT installed an extensive network covering the CIty of London during the 80s for banks/traders. TPON came in the early 90s to provide PSTN/ISDN services to new build sites but the electronics at the end was ultimately a dead end.
Standard User MHC
(legend) Mon 12-Mar-12 09:59:35
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Re: ''fibre optics ''


[re: Anonymous] [link to this post]
 
I remember back in about '80 or '81 being involved in a project which need fibre optics for control and communications. We brought in some of the technology from BT. And it was not cheap.





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


M H C


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Standard User Banger
(eat-sleep-adslguide) Mon 12-Mar-12 11:07:03
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Re: ''fibre optics ''


[re: MHC] [link to this post]
 
I bought some fibre from Tandy in 1986 for a little test project.

Tim
www.vivaciti.net & freenetname
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Standard User farnz
(member) Mon 12-Mar-12 11:33:03
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Re: ''fibre optics ''


[re: greenglide] [link to this post]
 
In reply to a post by greenglide:
BT used fibre many, many years ago for voice lines - the dreaded TPON - Telephony over Passive Optical Network.

This leap into new technology (60's and 70's I think?) caused problems with subscribers in TPON areas not being able to get ADSL until a "copper overlay" was installed - installing copper pairs instead of the TPON fibre.

Milton Keynes was the classic sufferer from this.

The logic of replacing optical with copper (for ADSL) and then with FTTC amazes me but GPO / BT always had a habit of either doing wonderful thing with old technology (the original STD dialing with Strowger electro mechanical kit) or getting stuck down a technical dead end (at the time) with TPON.

FTTC in 10 years time will probably seem a stupid move as well!


FTTC is unlikely to seem like a stupid move - BT have been careful to build their FTTC deployment in such a way that it's an easy step to FTTP (replace a VDSL2 DSLAM with a splitter, replace the copper tails with fibre tails to go from FTTC to GPON or XGPON). As long as we continue down the route towards fibre everywhere, it's a good first step.
Administrator MrSaffron
(staff) Mon 12-Mar-12 12:09:16
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Re: ''fibre optics ''


[re: farnz] [link to this post]
 
The VDSL2 DSLAM may well be capable of voice too, meaning that in future the cabinet to exchange copper could vanish

Andrew Ferguson, andrew@thinkbroadband.com
www.thinkbroadband.com - formerly known as ADSLguide.org.uk
The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
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