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Standard User kingbiscit
(member) Thu 03-Sep-15 08:27:05
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2 PCP cabs - single FTTC cab?


[link to this post]
 
Hello

The estate I live on is finally getting FTTC via Connecting Cheshire, the setup is a little strange as rather than one or two PCP cabs it has 5, this is because it was originally a TPON setup. I was told each cab would be updated from grey to standard green cab and get each would have there own FTTC cab.

However two of the cabs 208/209 are now showing as having FTTC available but there is only one FTTC cab next to 208, nothing next to 209. Can two PCP cabs share a single FTTC cab? Or is the checker showing false data? It has previously.

You can see a pic of the setup here:
http://anything.agency/temp/winwick_fttc.jpg

Edited by kingbiscit (Thu 03-Sep-15 08:28:56)

Standard User MHC
(sensei) Thu 03-Sep-15 08:42:26
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Re: 2 PCP cabs - single FTTC cab?


[re: kingbiscit] [link to this post]
 
No reason why two PCPs cannot share an FTTC cabinet although it would be rather odd. And with the distance from 209 to the FTTC being around 100m nearing the furthest extent of separation.


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M H C


taurus excreta cerebrum vincit
Standard User Zarjaz
(eat-sleep-adslguide) Thu 03-Sep-15 08:50:01
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Re: 2 PCP cabs - single FTTC cab?


[re: MHC] [link to this post]
 
No reason why two PCPs cannot share an FTTC cabinet although it would be rather odd.

No physical reason, but you can easily imagine to confusion in the ordering system to try and do it this way. It's not something I've ever come across.

These these two cabs now have two separate FTTC twins, if they were going to co-locate in one FTTC cab, surely it would have been done in a location like this ?


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Standard User MHC
(sensei) Thu 03-Sep-15 08:59:10
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Re: 2 PCP cabs - single FTTC cab?


[re: Zarjaz] [link to this post]
 
Just looking at that estate - 5 cabinets is a lot with each serving well under 100 properties, possibly just 40 or 50. Would an FTTC cabinet be financially viable for each PCP.


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M H C


taurus excreta cerebrum vincit
Standard User TheEulerID
(committed) Thu 03-Sep-15 09:16:50
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Re: 2 PCP cabs - single FTTC cab?


[re: Zarjaz] [link to this post]
 
Why should there be a confusion with the ordering system? After all, the order is against a line, and not a cabinet.

Of course what is required is that OpenReach's provisioning and configuration systems must allow for such an eventuality. In any event, the opposite is certainly possible. That is more than one VDSL cabinet serving a single wiring cabinet. If the OR systems allowed for that possibility, I don't see why the designers would not have allowed for the opposite.

So yes, it's likely to be rare, but presumably the IT systems and procedures have been designed to allow for it or it would not be happening.
Standard User Fastman2
(committed) Thu 03-Sep-15 09:25:22
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Re: 2 PCP cabs - single FTTC cab?


[re: MHC] [link to this post]
 
you can only connect a dslam to a single PCP you cannot share DSLAMS with more than one pcp
Standard User MHC
(sensei) Thu 03-Sep-15 09:37:49
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Re: 2 PCP cabs - single FTTC cab?


[re: Fastman2] [link to this post]
 
Why not? Can you give a set of technical reasons why they cannot be?


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

M H C


taurus excreta cerebrum vincit
Standard User arobertson545
(member) Thu 03-Sep-15 09:43:39
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Re: 2 PCP cabs - single FTTC cab?


[re: Fastman2] [link to this post]
 
In reply to a post by Fastman2:
you can only connect a dslam to a single PCP you cannot share DSLAMS with more than one pcp


Well that's not true as I can think of at least three cases where there are two FTTC cabinets for one PCP and thus two DSLAMs for one PCP....

Edited by arobertson545 (Thu 03-Sep-15 10:09:12)

Standard User Ribble
(fountain of knowledge) Thu 03-Sep-15 10:07:09
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Re: 2 PCP cabs - single FTTC cab?


[re: kingbiscit] [link to this post]
 
I think 209 must an error then as its not been installed. As said, each PCP has its own fttc cabinet(s). This is to ensure line power management is adhered to and to allow slu availability should it be requested. Cabinet line power management is based on e side copper cable losses, if there were more than one PCP connected the losses would be different and it would afftect the power management.

Edited by Ribble (Thu 03-Sep-15 10:12:26)

Standard User BatBoy
(sensei) Thu 03-Sep-15 10:08:18
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Re: 2 PCP cabs - single FTTC cab?


[re: arobertson545] [link to this post]
 
As documented here https://thecomputerperson.wordpress.com/2014/11/10/d...

Fastman2 really has no clue at all.
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