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-   -   Which is the virgin street cabinet? (https://www.cableforum.uk/board/showthread.php?t=33678019)

TJS 25-05-2011 16:25

Which is the virgin street cabinet?
 
There is this one about 100 meters from my house

http://i.imgur.com/7M2Ul.jpg

(I blocked the numbers out as they seemed that they could be used in some way to identify location but its a 5 digit number then a forward slash then a 3 digit number)

then this one; at the end of the street about 200 meter away

http://i.imgur.com/yf37Z.jpg

kwikbreaks 25-05-2011 16:58

Re: Which is the virgin street cabinet?
 
All the ones I've seen are pointy top green and tend to have a cover nearby with CATV on it but it will probably vary from area to area as different companies did the builds.

asbo dog 25-05-2011 17:08

Re: Which is the virgin street cabinet?
 
first one looks as thoe its a vm cab but the second i would say is bt's, dont hold me to that thoe.

as said the biggest give away is the man hole covers having catv

TJS 25-05-2011 17:13

Re: Which is the virgin street cabinet?
 
Hmm; this area is EX- NYNEX, Cable & wireless, Telewest + NTL; going by the markings on the phone sockets + cable in box's in the house

What do you mean by a cover with CATV on it?

---------- Post added at 16:11 ---------- Previous post was at 16:08 ----------

Quote:

Originally Posted by asbo dog (Post 35244650)
first one looks as thoe its a vm cab but the second i would say is bt's, dont hold me to that thoe.

as said the biggest give away is the man hole covers having catv

The first one doesn't have a manhole cover near it at all; but further down the street there is another one thats pretty much identical with the same numbering system on it which has a manhole right infront of it

http://i.imgur.com/cNPY1.png

---------- Post added at 16:13 ---------- Previous post was at 16:11 ----------

http://i.imgur.com/Oj9tU.png *this is the one from the first picture

The Installer 25-05-2011 17:38

Re: Which is the virgin street cabinet?
 
The first picture you posted is a VM cab, the second is BT ;)

kwikbreaks 25-05-2011 17:42

Re: Which is the virgin street cabinet?
 
If the lighter grey bits on the covers in your first picture have the letters CATV on them then pound to a penny that is a VM street cab. If the other one has the same numbering system then I'd say that is too.

The flat top one looks like a BT cab to me too but as neither train nor cab spotting figures highly in my list of interests I too can't be sure.

My own local council seem to think that re-tarmaccing paths is far too expensive (along with sweeping them) so the route taken by the ducting my own cable runs in up the street to the cab is easily visible.

*sloman* 25-05-2011 17:53

Re: Which is the virgin street cabinet?
 
http://i.imgur.com/yf37Z.jpg = BT

http://i.imgur.com/7M2Ul.jpg = looks like all the VM cabs in my area, but mine are green and covered in graffiti

all here: http://www.telephonesuk.co.uk/wiring_cabs.htm

TJS 25-05-2011 18:14

Re: Which is the virgin street cabinet?
 
Thankyou :D

sorry for the weird question but the geeky side of me couldn't help but want to know where everything connects LOL

---------- Post added at 17:14 ---------- Previous post was at 17:11 ----------

p.s.

any idea why the cabinet closest to my house doesn't have a manhole in-front of it; but the one a bit further down does? whats actually under the covers?

I'm wondering if many the cab closest to me is linked to the one further up the road perhaps

also i live in a relatively rural area I'm not sure if this makes any difference; but the village i'm in has about 40 houses if that; then where the other street cab up the road (with the manhole cover) is part of the 'main village/town' which where i live links on to (kinda confusing LOL)

JayJay 25-05-2011 18:40

Re: Which is the virgin street cabinet?
 
Nothing interesting in the pits, just cables, dirt, and other nasties! The odd glove from engineers too! ;-)

You may find the manhole could be on the road.

Sephiroth 25-05-2011 23:20

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by TJS (Post 35244700)
Thankyou :D

sorry for the weird question but the geeky side of me couldn't help but want to know where everything connects LOL

---------- Post added at 17:14 ---------- Previous post was at 17:11 ----------

p.s.

any idea why the cabinet closest to my house doesn't have a manhole in-front of it; but the one a bit further down does? whats actually under the covers?

I'm wondering if many the cab closest to me is linked to the one further up the road perhaps

also i live in a relatively rural area I'm not sure if this makes any difference; but the village i'm in has about 40 houses if that; then where the other street cab up the road (with the manhole cover) is part of the 'main village/town' which where i live links on to (kinda confusing LOL)
(SEPH): Interesting. Not many rural areas are covered by VM. Where are you located?

I can answer some of your questions. As others have stated, the top picture is the VM cabinet.

There are two types of cabinet:

1. Every 200 m apart (in my area at least), they serve the 50 or so homes passed (could be more in densely populated areas). These put copper into the homes and are connected by copper to an aggregating cabinet.

2. Several of the street boxes described above feed to an Optical Node. That street box should have a 240V warning on the cabinet because it is directly powered. In an area like mine, it's less than 500 homes passed per optical node. In densely populated areas it could be as high as 2,000 homes passed. Performance will differ between those extremes. The optical node converts the copper RF to optical signals.

The fibre goes back to a local VM data centre where it aggregates with other fibres from other localities. The fibre distance can be quite high, like the distance between Bracknell and Reading - some 13 miles. The fibres go through equipment that converts the optical signal back to RF and then they land onto line cards in the CMTS. The CMTS is a big FO cable modem! My area, Reading, has 23 CMTSs serving a catchment of around ΒΌ million people (I don't know the percentage of connected homes).

The pinch points are the local optical node when an area is oversubscribed and the line card when the areas concerned are all running flat out. VM are busy installing new line cards with much higher capacity and throughput, allowing more channels and thus reduced congestion. Every so often, VM resegment an area. That is they redistribute localities across line cards to provide better load balancing.

The signal carried along the copper is both TV and internet. Your own home receives every signal transmitted to your locality. Only signals addressed to your cable modem go past the BPI+ filter in your modem; everything else is discarded.

And that's a horribly simplified description!

TJS 26-05-2011 00:21

Re: Which is the virgin street cabinet?
 
Thank you :D


+ I live in the stoke on trent area theres quite a few small villages around the borders of stoke which get covered by virgin; a couple of the phone sockets inside my house say "NYNEX" on them so its been covered since the 80s :erm:

What do the buildings look like where all the cable modems connect? Is it anything to do with the phone exchange or is that strictly BT lines; because the phone exchange is about 800 meters from my house.

Had a quick walk down the street with the box thats closest to me and I can only see about 7/8 houses with the brown cable box on the side of them LOL

Sephiroth 26-05-2011 00:45

Re: Which is the virgin street cabinet?
 
The data centres aren't advertised for security reasons. The one in Reading is absolutely non-descript. It'll be as place on an industrial estate (of sorts) with VM vans parked on the hard standing. VM phones have nothing to do with BT phones. Totally separate.

If your village is a long way from anywhere else (like more than half a mile), I'd say that the box you pictured was an optical node. It looks large enough given that it serves only 40 homes.

TJS 26-05-2011 00:55

Re: Which is the virgin street cabinet?
 
Does this mean that my contention ratio will be an absolute maximum of 40:1; or does it not work like this for contention?

Sephiroth 26-05-2011 01:09

Re: Which is the virgin street cabinet?
 
Now you're getting difficult! I'll leave you to Google "broadband contention ratio". To my mind it's a budget set by the ISP according to expectesd uage for the provided infrastucture.

I can tell you this, based on my area, 40 homes passed per street box will have low contention particualrly as it might well be that you also have fibre to serve those 40 homes. Of course 4 or 5 menaces can easily swallow the bandwidth by constantly downloading or uploading.

So nw tell us, what's happening with your broadband?

kwikbreaks 26-05-2011 08:50

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by Sephiroth (Post 35244834)
The pinch points are the local optical node when an area is oversubscribed...

Would I be right in guessing that this is the situation which takes ages to get fixed? I'm guessing the way out would be to add another optical node or at least an additional fibre back to the CMTS.

---------- Post added at 07:49 ---------- Previous post was at 07:46 ----------

Quote:

Originally Posted by *sloman* (Post 35244682)

well just look at that - a website dedicated to cab spotters :)

Sephiroth 26-05-2011 09:24

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by kwikbreaks (Post 35244943)
Would I be right in guessing that this is the situation which takes ages to get fixed? I'm guessing the way out would be to add another optical node or at least an additional fibre back to the CMTS.
SEPH: It depends where the contention lies. If it's at the line card, then resegmentation makes sense, failing which an additional or more powerful line card. If the contention is at the optical node, maybe an additional fibre. But usually the contention is due to the swamping of channel capacity due to oversubscription and thus peak time demand. Also the number of upstream channels is crucial to the avoidance of contention for gaming. The optical circuit itself, IMO, is unlikely to be the weakness. Only the number of channels it carries.
---------- Post added at 07:49 ---------- Previous post was at 07:46 ----------


well just look at that - a website dedicated to cab spotters :)
SEPH: Ha ha. I mapped the whole of Winnersh last year and that enabled me to work out the number of homes passed per cabinet and optical node. I did it first on Google Street View and then walked the streets for confirmation. The odd cabinet door was open as a photo opportunity but sadly no optical nodes had their doors open.


kwikbreaks 26-05-2011 10:11

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by Sephiroth (Post 35244951)
The odd cabinet door was open as a photo opportunity but sadly no optical nodes had their doors open.

Bit of street cab soft porn I hunted down for you then...
http://www.broadband-finder.co.uk/bl...et-cabinet.jpg :shocked:

http://skuds.org/wordpress/wp-conten...ox-254x300.jpg :erm:

===

I had to turn off safe search to find this one...

http://www.nbr.co.nz/files/0cabinet.jpg

Sephiroth 26-05-2011 10:25

Re: Which is the virgin street cabinet?
 
Thanks kwiky. They're not optical nodes though. I think I've got a photy of at least one on the home machine that I'll post together with my nerdy map of Winnersh and it's street cabinets.

kwikbreaks 26-05-2011 10:29

Re: Which is the virgin street cabinet?
 
Most of the pictures on google seem to be just the equipment rather than open cabinets so maybe that VM gaffer tape holding so many shut is stronger than I thought :)

This looks like it's probably an optical node as it's right next to a standard looking cab. Terrible picture unfortunately - long lens paparazzi no doubt... http://news.bbcimg.co.uk/media/image...3_rutland2.jpg

TJS 26-05-2011 11:03

Re: Which is the virgin street cabinet?
 
How do the ones that don't have an optical node in work? do they just link up to one that does?

Sephiroth 26-05-2011 11:34

Re: Which is the virgin street cabinet?
 
They combine and amplify the individual circuits (taps) in the big Magnavox box which then combines with the incoming coax from the street box further up and produce a single amplified coax to the next street box, and so on until it reaches the optical node where it's all remodulated to fibre optics.

Something like that. In other words, your supposition is correct. There is a clue on kwik's phot if you study it.

zekeisaszekedoes 26-05-2011 17:41

Re: Which is the virgin street cabinet?
 
This turned into an interesting thread. Geeky, but good. Wish I'd gone and had a poke around when the tech adjusted the levels yesterday, maybe snapped a pic to see how many houses the cabinet covers.

qasdfdsaq 27-05-2011 15:42

Re: Which is the virgin street cabinet?
 
Threads like these are why I still visit CF (occasionally) :)

7031 27-05-2011 16:15

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by qasdfdsaq (Post 35245808)
Threads like these are why I still visit CF (occasionally) :)

Seconded. I find it pretty interesting actually.

TJS 27-05-2011 17:29

Re: Which is the virgin street cabinet?
 
Does anyone know what sort of the speed the fiberoptic nodes connect to the street cabs at?

---------- Post added at 16:29 ---------- Previous post was at 16:29 ----------

Also is it the fiberoptic node thats limiting areas from being upgraded to the 100 mb package sooner; or do they need to upgrade the CMTS things?

7031 27-05-2011 18:32

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by TJS (Post 35245855)
Does anyone know what sort of the speed the fiberoptic nodes connect to the street cabs at?

---------- Post added at 16:29 ---------- Previous post was at 16:29 ----------

Also is it the fiberoptic node thats limiting areas from being upgraded to the 100 mb package sooner; or do they need to upgrade the CMTS things?

Not sure. I saw an engineer working on the cabinet the same day that 100Mbit became available in my area, and I'm pretty sure it's not a fibre node, but it could have been a separate thing.

TJS 27-05-2011 19:46

Re: Which is the virgin street cabinet?
 
Hmm; Looking at the 100 mb roll out schedule then comparing to the CMTS sttus website; it seems that the areas that are being upgraded for 100 mb first seem to have only about 3 - 4 CMTS' when the larger areas like stoke on trent e.t.c with upwards of 15 CMTS' Only show 'being planned' it seems strange to upgrade smaller areas first :s


http://shop.virginmedia.com/content/...t_16_03_11.pdf

http://ukinternetreport.co.uk/cmts/

Sephiroth 27-05-2011 20:23

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by TJS (Post 35245855)
Does anyone know what sort of the speed the fiberoptic nodes connect to the street cabs at?

---------- Post added at 16:29 ---------- Previous post was at 16:29 ----------

Also is it the fiberoptic node thats limiting areas from being upgraded to the 100 mb package sooner; or do they need to upgrade the CMTS things?

The speed of light! The downstream is pumped out for your modem at the configured rate and likewise from your modem for the upstream.

Have a read of this.

The fibre capacity question is not intuitive. The article I've pointed to might help you understand. It's all about Msyms/second, QAM modulation (bit density) and how many channels are shared between how many users. A single channel at 256QAM (8 bits/symbol) at 6.952 MegaSysms/sec allows 55 Mbits per channel (you see that on the modem stats). There are 4 bonded channels on each of which you get your slice. If you were working at 50 meg, you'd get 13.9 meg/channel and if more than 4 users are fully stretching their link, anyone else coming onto that channel will face congestions (as then will the others). So it's the maths of DOCSIS that governs what happens, not the speed of light.

Does that help?

Tazz 27-05-2011 21:28

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by Sephiroth (Post 35244879)
The data centres aren't advertised for security reasons. The one in Reading is absolutely non-descript. It'll be as place on an industrial estate (of sorts) with VM vans parked on the hard standing. VM phones have nothing to do with BT phones. Totally separate.

If your village is a long way from anywhere else (like more than half a mile), I'd say that the box you pictured was an optical node. It looks large enough given that it serves only 40 homes.

Ooo near a certain wholesale supplier by any chance? ;)

7031 27-05-2011 23:18

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by Sephiroth (Post 35245991)
The speed of light! The downstream is pumped out for your modem at the configured rate and likewise from your modem for the upstream.

Have a read of this.

Thanks for that. Very informative read.

Sephiroth 27-05-2011 23:48

Re: Which is the virgin street cabinet?
 
3 Attachment(s)
I promised some photos. There is a typical street cabinet photo, a 230V cabinet photo and a PDF of my nerdish research in Winnersh.

The PDF differentiates typical cabinets from 230V cabinets (Optical Nodes) and also shows the BT Infinity cabinets. The number of houses per street is also shown so that I could get the homes passed number. It's 39 homes passed on average per street cabinet and 480 per optical node.

jtaylor06 27-05-2011 23:51

Re: Which is the virgin street cabinet?
 
Very interesting read!

Wow, so many wires in the first image of yours Seph!

Sephiroth 28-05-2011 00:38

Re: Which is the virgin street cabinet?
 
I chode a smaller cabinet for clarity! You should see some of them. Each home has its own cable to the tap point you see. That lot is combined and put into the amplifier which combines it all together with the incoming from the next durthest away (from the fibre optic node) cabinet. Upstream is split from the common cable and fed back to the tap points.

Something like that!

TJS 28-05-2011 00:44

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by Sephiroth (Post 35246098)
I promised some photos. There is a typical street cabinet photo, a 230V cabinet photo and a PDF of my nerdish research in Winnersh.

The PDF differentiates typical cabinets from 230V cabinets (Optical Nodes) and also shows the BT Infinity cabinets. The number of houses per street is also shown so that I could get the homes passed number. It's 39 homes passed on average per street cabinet and 480 per optical node.

how long did that PDF take you to make LOL damn i thought i was bad wanting to know how everything works :dozey:

Sephiroth 28-05-2011 01:06

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by TJS (Post 35246121)
how long did that PDF take you to make LOL damn i thought i was bad wanting to know how everything works :dozey:

You shouldn't have asked then! I did it in Visio and it did take a couple of weeks to walk (after first research with Streetview) and a few evenings drawing etc. Utter nerd stuff.

TJS 28-05-2011 01:27

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by Sephiroth (Post 35246128)
You shouldn't have asked then! I did it in Visio and it did take a couple of weeks to walk (after first research with Streetview) and a few evenings drawing etc. Utter nerd stuff.

LOL what do the differen't colours mean on the PDF?

jtaylor06 28-05-2011 01:30

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by Sephiroth (Post 35246128)
You shouldn't have asked then! I did it in Visio and it did take a couple of weeks to walk (after first research with Streetview) and a few evenings drawing etc. Utter nerd stuff.

Ouch! Visio can be very fiddly too; well, unless that's just me :P

TJS 28-05-2011 01:32

Re: Which is the virgin street cabinet?
 
also; i noticed some streetcabs have the usual 2 doors; but then an extra small door to the side; whats behind there?

Sephiroth 28-05-2011 11:18

Re: Which is the virgin street cabinet?
 
typosThe extra small door on some cabs are telephone terminations. If it's a very large cabinet with CATV on the floor, then it's a telephone only cabinet.

The colours on the drawing are as follows:

Red square:--------------------Typical VM cabinet
Red rectangle with 230 legend:--Optical Node

Green square:------------------Typical BT cabinet
Green rectangle with F legened:-BT FTTC cabinet

Numbered roundel:--------------Number of homes in the street (from electoral roll)

As it happens, there is a VM Core station in Wharfedale Road, where the backbone passes through (as in winn-bb-1a-so-130.virginmedia.net). So all the optical nodes from Bracknell, Wokingham, Winnersh to the east and a whole chunk more from the other directions) pile into Reading where there are 23 CMTSs. Each CMTS has 12 line card slots. Each card (of the type they're putting in now) provides 72 downstream and 60 upstream channels (the older line cards do 20 DS + 20 US channels).

From Reading, a head end switch sends the aggregated data from the CMTSs to Winnersh where it is switched onto the backbone that you see on all the traceroutes people publish.

_wtf_ 28-05-2011 11:50

Re: Which is the virgin street cabinet?
 
What I find interesting is the people who know their stuff have BT Infinity.

Sephiroth 28-05-2011 12:13

Re: Which is the virgin street cabinet?
 
I've got BT Infinity so that I'm never without internet. Not that I've needed this luxury more than twice over the past 5 years (once when it wasn't Infinity) and once recently when VM were upgrading the CMTSs in Reading and piled a load of peops onto a single CMTS without telling them beforehand (not that BT would either).

Also there's professional curiosity. I'm getting a load balancing router and then I can use both simultaneously according to policies I set in the router.

pip08456 28-05-2011 12:19

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by _wtf_ (Post 35246316)
What I find interesting is the people who know their stuff have BT Infinity.

I wonder why???:D

TJS 28-05-2011 18:58

Re: Which is the virgin street cabinet?
 
Turns out there is a manhole cover for the street cab; but its on the other side of the road for whatever reason LOL it says NYNEX on it aswell rather then CATV

pip08456 28-05-2011 19:06

Re: Which is the virgin street cabinet?
 
NYNEX was a forerunner of NTL. Used to be with them myself!

Ignitionnet 28-05-2011 19:42

Re: Which is the virgin street cabinet?
 
1 Attachment(s)
For you Seph, underground plant.

Sephiroth 28-05-2011 21:40

Re: Which is the virgin street cabinet?
 
Mwah.

pip08456 28-05-2011 22:36

Re: Which is the virgin street cabinet?
 
Defo a Geeky thread this one!

7031 29-05-2011 01:14

Re: Which is the virgin street cabinet?
 
I do believe that these images qualify as softcore nerd porn.

pip08456 29-05-2011 01:30

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by 7031 (Post 35246975)
I do believe that these images qualify as softcore nerd porn.

Got to agree there!!!!!!!!!!!!!!!!!!!:D:D:D

BTW Seph's a porno star!:D:D

craigj2k12 29-05-2011 11:55

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by pip08456 (Post 35246981)
Seph's a porno star!:D:D

hes just the camera man

asbo dog 29-05-2011 16:26

Re: Which is the virgin street cabinet?
 
dont cry, nothing a spanner wont fix http://community.virginmedia.com/t5/...et/td-p/520603

TJS 29-05-2011 20:47

Re: Which is the virgin street cabinet?
 
Virgin people have been out pulling new cables into the cabinets in my area; I'm not sure what they were doing but they were out for a couple of hours + the super-hub restarted its self

https://www.cableforum.co.uk/images/...2011/05/36.png
http://www.pingtest.net/result/41198340.png
Cant really see much difference; The jitter has raised slightly but i'm not sure if they're still doing anything further up the line?

craigj2k12 29-05-2011 21:06

Re: Which is the virgin street cabinet?
 
they were probably pulling a line for a new customer? or a couple of new customers? if your re booted then they may have put you on a splitter like they did with mine. has your upstream power increased?

either that or they were pulling for a new customer and the superhub did one of its special reboots lol

TJS 29-05-2011 21:12

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by craigj2k11 (Post 35247605)
they were probably pulling a line for a new customer? or a couple of new customers? if your re booted then they may have put you on a splitter like they did with mine. has your upstream power increased?

either that or they were pulling for a new customer and the superhub did one of its special reboots lol

The cables looks a lot thicker then the one running to my house like id say about 2 - 3 cm wide

Upstream power is still at 41.7 and downstream at 5 - 6 dBmV as always

craigj2k12 29-05-2011 21:17

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by TJS (Post 35247612)
The cables looks a lot thicker then the one running to my house like id say about 2 - 3 cm wide

Upstream power is still at 41.7 and downstream at 5 - 6 dBmV as always

i dont know much about that, the coax (the one to your house goes into the cabinet) and then it goes from coax to fibre through something and magic happens and you get internet.

as you can see, i am a clear expert in this field.... but i do know that some kit is being swapped ready for 100mbit

Sephiroth 29-05-2011 23:03

Re: Which is the virgin street cabinet?
 
It looks like the overbuild network is going in.

TJS 29-05-2011 23:10

Re: Which is the virgin street cabinet?
 
whats that? D:

Sephiroth 30-05-2011 00:07

Re: Which is the virgin street cabinet?
 
The overlay network went on top of the legacy network for 50 meg; the overbuild network is to make areas good for 100 mrg.

kwikbreaks 30-05-2011 11:46

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by craigj2k11 (Post 35247615)
...and magic happens and you get...

Same as most other technology then...

craigj2k12 30-05-2011 13:50

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by kwikbreaks (Post 35247840)
Same as most other technology then...

apart from the superhub :D

essjay 30-05-2011 15:19

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by Sephiroth (Post 35246098)
I promised some photos. There is a typical street cabinet photo, a 230V cabinet photo and a PDF of my nerdish research in Winnersh.

The PDF differentiates typical cabinets from 230V cabinets (Optical Nodes) and also shows the BT Infinity cabinets. The number of houses per street is also shown so that I could get the homes passed number. It's 39 homes passed on average per street cabinet and 480 per optical node.


From what I can make out neither of them cabs have a 240v feed. Only the optical nodes as you call them (or launch cabinets, or mux a's) have a 240v feed you can tell this has it will have a RCB device. This is then wired into a PSU either an all in one unit that splits the power into 60v and 48v or two separate units.

A typical area in the Northwest (ex Nynex build) would be something along the lines of the following.

Fibre to optical node 4 of those this is then converted into RF into the launch amp for the area, these then feed either trunk or line amplifiers, never any more than 4 in the cascade, on average 14 per area, each amp feeding a 48 way tap block.

So each cabinet can serve 48 homes
Each area on avarage 672 homes
each optical area 2600

These are only averages .

TJS 30-05-2011 16:47

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by essjay (Post 35248030)
From what I can make out neither of them cabs have a 240v feed. Only the optical nodes as you call them (or launch cabinets, or mux a's) have a 240v feed you can tell this has it will have a RCB device. This is then wired into a PSU either an all in one unit that splits the power into 60v and 48v or two separate units.

A typical area in the Northwest (ex Nynex build) would be something along the lines of the following.

Fibre to optical node 4 of those this is then converted into RF into the launch amp for the area, these then feed either trunk or line amplifiers, never any more than 4 in the cascade, on average 14 per area, each amp feeding a 48 way tap block.

So each cabinet can serve 48 homes
Each area on avarage 672 homes
each optical area 2600

These are only averages .

You are right about the voltage feed; i cant see any warning of that anywhere on or near the cabs; whats the difference between the cabs that have these and the ones that don't?

essjay 30-05-2011 17:10

Re: Which is the virgin street cabinet?
 
They are usually twice the size or bigger

digitalspace 01-06-2011 18:36

Re: Which is the virgin street cabinet?
 
This thread is brilliant, just the kind of tech discussion I've been searching for, and with pictures too! :)

TJS 02-06-2011 16:19

Re: Which is the virgin street cabinet?
 
So I actually took a look at the brown box on the side of my house properly for the first time; and there is a load of cables going to it.

There is 2 sets of double cables with a brown plastic outside going into the box; and then a black double cable going in there as-well; I have no idea where the brown cables come/go fro but the black cable goes under the path and down into a green hose that goes under the street Any idea what the brown cables are for?

Also i opened the box up and its literally packed with cables LOL so i just closed it.

---------- Post added at 15:19 ---------- Previous post was at 15:17 ----------

https://www.cableforum.co.uk/images/...2011/06/67.jpg

carlwaring 02-06-2011 16:37

Re: Which is the virgin street cabinet?
 
Okay. So we know what a BT cab looks like and we know what a VM cab looks like. So what's this? ;)

[img]Download Failed (1)[/img]

My ideas:
A. A BT cab that VM have taken over or hijacked.
B. A BT cab in VM's Cabinet Protection Program.

TJS 02-06-2011 16:50

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by carlwaring (Post 35250342)
Okay. So we know what a BT cab looks like and we know what a VM cab looks like. So what's this? ;)

http://img801.imageshack.us/img801/1174/02062011077.jpg

My ideas:
A. A BT cab that VM have taken over or hijacked.
B. A BT cab in VM's Cabinet Protection Program.

At first i was like 'that looks like some of the bigger streetcabs arround here' but then it has some kind of mutant door thing coming out the front of it?

LOL

Sephiroth 02-06-2011 16:53

Re: Which is the virgin street cabinet?
 
@ TJS

Ah - a photo of the inside of the brown box would help answer your questions more reliably. (if you can be arsed to provide a phot, do please separate things as clearly as possible for ease of discernment!).

Essjay may know more about the Nynex build, but the build in my area was Telecential --> Comtel --> Cabletel = NTL.

Mine is a grey box with a thick black cable emerging from a green undergound hose. The telephone wires pop out of the black sheathing and distribute out of the box and round two places in the house. The digital cable goes into a splitter that goes out round the wall to two other TV box places in the house and through the wall to another room which further distributes via a splitter to cable modem and TV.

So your brown cables - did Nynex do FM radio separately? Or is that even how analogue TV was provided? Essjay?

TJS 02-06-2011 17:15

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by Sephiroth (Post 35250357)
@ TJS

Ah - a photo of the inside of the brown box would help answer your questions more reliably. (if you can be arsed to provide a phot, do please separate things as clearly as possible for ease of discernment!).

Essjay may know more about the Nynex build, but the build in my area was Telecential --> Comtel --> Cabletel = NTL.

Mine is a grey box with a thick black cable emerging from a green undergound hose. The telephone wires pop out of the black sheathing and distribute out of the box and round two places in the house. The digital cable goes into a splitter that goes out round the wall to two other TV box places in the house and through the wall to another room which further distributes via a splitter to cable modem and TV.

So your brown cables - did Nynex do FM radio separately? Or is that even how analogue TV was provided? Essjay?


Ill attempt to brave opening the brown box again.....

---------- Post added at 16:15 ---------- Previous post was at 16:09 ----------

https://www.cableforum.co.uk/images/...2011/06/63.jpg

Please excuse the picture quality LOL i tried to be discreet and use compact camera because i Imagine a few eyebrows would be raised if i was out there with my slr taking photos of a box. LOL

edit: made picture lower resolution

craigj2k12 02-06-2011 17:30

Re: Which is the virgin street cabinet?
 
whoa the size of that coax coming in

TJS 02-06-2011 17:54

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by craigj2k11 (Post 35250389)
whoa the size of that coax coming in

I thought that to LOL

craigj2k12 02-06-2011 18:00

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by TJS (Post 35250406)
I thought that to LOL

fatter than me leg

Peter_ 02-06-2011 18:10

Re: Which is the virgin street cabinet?
 
Compare it to the standard sized brick for a reality check.:D:D:D

TJS 02-06-2011 18:18

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by Masque (Post 35250427)
Compare it to the standard sized brick for a reality check.:D:D:D

The bricks on my house are smaller then modern ones as it was built in 1830

I think its RG-11 coax coming into the box

https://www.cableforum.co.uk/images/...2011/06/64.jpg

RG11 top RG6 bottom

Peter_ 02-06-2011 18:19

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by TJS (Post 35250437)
The bricks on my house are smaller then modern ones as it was built in 1830

Not that small as the cable is the standard siamese cable coming into the OMNI box.

JayJay 02-06-2011 18:34

Re: Which is the virgin street cabinet?
 
Carl, im sure its one of ours, there is a few like that ive worked in Bristol which I actually thought was Cell Communications (thats what happens when your not from the area!) once opened revealed it was a mux :)

essjay 02-06-2011 19:10

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by TJS (Post 35250371)
Ill attempt to brave opening the brown box again.....

---------- Post added at 16:15 ---------- Previous post was at 16:09 ----------

https://www.cableforum.co.uk/images/...2011/06/63.jpg

Please excuse the picture quality LOL i tried to be discreet and use compact camera because i Imagine a few eyebrows would be raised if i was out there with my slr taking photos of a box. LOL

edit: made picture lower resolution


Do you live in a flat by any chance ??

Or have two phone lines ?


Its a bit difficult to see from that angle, but what I can tell you is that you have 2 x RG6 siamese running in in what looks like 2 x telco lines and a RG11 DTV/BB feed into a 2 way splitter

White RG6 into the wall behind the drop box and another RG6 black feed going elsewhere



---------- Post added at 18:05 ---------- Previous post was at 18:03 ----------

Quote:

Originally Posted by Sephiroth (Post 35250357)

So your brown cables - did Nynex do FM radio separately? Or is that even how analogue TV was provided? Essjay?

FM, Analogue, DTV and broadband all down the same cable.

---------- Post added at 18:10 ---------- Previous post was at 18:05 ----------

Either 2 phones lines or you've had a re pull for RG11 and they have never took out the original RG6 which would make sense if you have phone live as RG11 Siamese is like rocking horse ****

TJS 02-06-2011 19:25

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by essjay (Post 35250492)
Do you live in a flat by any chance ??

Or have two phone lines ?


Its a bit difficult to see from that angle, but what I can tell you is that you have 2 x RG6 siamese running in in what looks like 2 x telco lines and a RG11 DTV/BB feed into a 2 way splitter

White RG6 into the wall behind the drop box and another RG6 black feed going elsewhere

Nope; semi detached house LOL

Although the people who lived in the house prior to me did have a business from the house + a VM business connection so you could be right about 2 phone lines; I never thought of that

---------- Post added at 18:24 ---------- Previous post was at 18:20 ----------

https://www.cableforum.co.uk/images/...2011/06/61.jpg

There is one of these on the internal wall directly behind the brown box; and one upstairs in what used to be the office for the people who had the house previously;

The socket just below the virgin box is a hardwired GB/s ethernet socket that is in from the previous owners

---------- Post added at 18:25 ---------- Previous post was at 18:24 ----------

+ there is a phone socket on the other side of the window

essjay 02-06-2011 19:32

Re: Which is the virgin street cabinet?
 
That makes perfect sense, you must be quite far from the cabinet to warrant a RG11 feed.

TJS 02-06-2011 19:48

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by essjay (Post 35250519)
That makes perfect sense, you must be quite far from the cabinet to warrant a RG11 feed.

Roughly 120 or so meters; The thick black RG11 cable has a smaller cable stuck on the side of it and goes through a green hose in the front garden bit of my house under into the street; the 2 brown thinner cables just seem to emerge from under ground

Sephiroth 02-06-2011 20:48

Re: Which is the virgin street cabinet?
 
Difficult to tell, but it looks possible that the RG6 coming out of the splitter feeds another part of your house (it goes up the wall, I think) or another house. Follow it. It's outside grade cable. The brown cables seem to be telephone. The white cable goes into your house.

Again, if you can be arsed, you could feel where the second black cable ( RG6) goes.

EDIT: I read Essjay's assessment after I posted the above.

essjay 02-06-2011 20:50

Re: Which is the virgin street cabinet?
 
120mtr is about right

TJS 02-06-2011 21:06

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by Sephiroth (Post 35250587)
Difficult to tell, but it looks possible that the RG6 coming out of the splitter feeds another part of your house (it goes up the wall, I think) or another house. Follow it. It's outside grade cable. The brown cables seem to be telephone. The white cable goes into your house.

Again, if you can be arsed, you could feel where the second black cable ( RG6) goes.

EDIT: I read Essjay's assessment after I posted the above.


The one that goes up the wall is to the upstairs of my house Each house around here has a separate brown box on it

---------- Post added at 20:06 ---------- Previous post was at 20:03 ----------

How come the brown ones don't go through the same duct as the black cable? The thick black one with the little cable on the side goes out the box under the path then down into some plastic piping that goes under the street but the brown ones just seem to appear out of the ground; theres no apparent duct that they go to or come from; unless there is 2 ducts running to my house perhaps?

---------- Post added at 20:06 ---------- Previous post was at 20:06 ----------

p.s. the second brown one isnt particularly visable but its just behind the black cable going in can be seen more clearly from this photo http://i.imgur.com/3CA0M.jpg

essjay 02-06-2011 21:13

Re: Which is the virgin street cabinet?
 
if you have a look on the street you will find your swept tee (could be triangular or round) all the cable will come out of there.

The route they take into your property will depend on how good or how lazy :D the installers were.

But it defiantly looks like at some point you have had at least two repulls.

TJS 02-06-2011 21:18

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by essjay (Post 35250610)
if you have a look on the street you will find your swept tee (could be triangular or round) all the cable will come out of there.

The route they take into your property will depend on how good or how lazy :D the installers were.

But it defiantly looks like at some point you have had at least two repulls.


Theres no visible marks on the road; but then i'm not entirely sure what i'm looking for LOL.

The black cable theres about 2" of green tubing coming out of the ground just behind the front wall to the garden then the cable comes out and goes under the path tot he side of the house then up from under the path into the box; but the grown cables just seem to appear with no viable duct that they go into

---------- Post added at 20:18 ---------- Previous post was at 20:16 ----------

http://www.sde-civils.co.uk/images/p.../ducting-9.jpg just like that except about an inch diameter

Sephiroth 02-06-2011 21:28

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by essjay (Post 35250610)
if you have a look on the street you will find your swept tee (could be triangular or round) all the cable will come out of there.

The route they take into your property will depend on how good or how lazy :D the installers were.

But it defiantly looks like at some point you have had at least two repulls.

There's a good photo here. See post #1

I tried to get it into this post but the advanced feature on the forum didn't want to browse.

TJS 02-06-2011 21:31

Re: Which is the virgin street cabinet?
 
Quote:

Originally Posted by Sephiroth (Post 35250632)
There's a good photo here. See post #1

I tried to get it into this post but the advanced feature on the forum didn't want to browse.

Little triangle thing is just infront of my house like litrally 10/15 meters directly infront

essjay 02-06-2011 22:26

Re: Which is the virgin street cabinet?
 
like this

https://www.cableforum.co.uk/images/...2011/06/52.jpg

Spiral Ghost 02-09-2011 14:13

Re: Which is the virgin street cabinet?
 
Hi everyone, since you were talking about Virgin street cabinets and boxes I was wondering if any of you can recognize this type of box which sits about three meters high on the side of many buildings over here in Scotland. I erased the first two numbers from the stickers. Any help is appreciated.

http://www.bonteadigital.com/Blackbox.JPG

Sephiroth 02-09-2011 14:59

Re: Which is the virgin street cabinet?
 
It's got the 1980s BT logo on. DP usually means Distribution Point and I presume there are no telephone poles in that street.

Spiral Ghost 02-09-2011 16:07

Re: Which is the virgin street cabinet?
 
Thanks Seph, so basically it's just a big splitter inside... I just wanted to be sure that it's not some sort of picocell.
And you're right, there are no telephone poles in the street.

qasdfdsaq 02-09-2011 18:25

Re: Which is the virgin street cabinet?
 
A picocell wouldn't have a BT logo on it or multiple cables coming out of it. They look more like this:

http://www.planningportal.gov.uk/eng...ft-table,0.jpg

Jon22 06-09-2011 11:27

Re: Which is the virgin street cabinet?
 
Just out of interest, what is the dark green cabinet on the left in the below link? I know the one on the right is a Virgin cabinet.

http://g.co/maps/enzx

Sephiroth 06-09-2011 11:46

Re: Which is the virgin street cabinet?
 
It's difficult to see on the photo through lack of contrast. if you can take your own phot in the right light conditions ....

Normally VM have a street cabinet in front of which is a pit cover marked CATV. If it's a 5 foot tall and wide humming cabinet next to it with CATV on the pit cover, then it could be a Virgin telephone cabinet. The optical nodes, with 240V lable on the front, are not usually next to a coax street cabinet except in densely populated areas where both sets of 48 tap points are needed.

BT usually site their Infinity cabinets immediately adjacent their telephone cabinets. But as you're sure the one on the right is VM ....

Jon22 06-09-2011 12:53

Re: Which is the virgin street cabinet?
 
Thanks Sephiroth. Its definetly not a BT Infinity Cabinet as our exchange hasn't been done yet.

JayJay 06-09-2011 13:37

Re: Which is the virgin street cabinet?
 
That is there for the telco and sometimes power for local nodes. :) Contains batteries and such :)

BigMinty 03-12-2012 22:28

Re: Which is the virgin street cabinet?
 
OK the big Cabinet everyone is confused about is a MUX + Telephone Switchboard. inside there are About 600 diffrent lines for use with phone
Also 6x 12V batterys incase of power cut
And fiber optic feed which feeds the nodes.
and it does belong to virgin


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