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d_l
Barsoom
Premium,MVM
join:2002-12-08
Reno, NV
kudos:7

reply to djrobx

Re: It can go faster then 18 Mbps

said by djrobx:

I don't think the FTTN strategy was necessarily a bad idea, but they needed to put nodes closer to homes.
Just how are they supposed to do that? The VRAD nodes are placed adjacent to the existing SAI fan out points of the F2 lines.

Placing more nodes would require chopping up and re-engineering the copper network to include "mini-SAI"s with each of these new nodes (mini-VRADs) that you want to deploy. Can you imagine the POTS outages this re-engineering program would cause while the new SAIs were installed?

If, say, they halved the copper loop distance with these closer nodes than what they have now, that would mean they would be installing at least four times more SAI/node boxes than they are now. Certainly these hypothetical boxes would be smaller than the current VRADs because they would be designed for fewer connections, but four times more installations would cause more grief from four times more property owners that would find these new boxes installed on their property ROW.

The current overbuild VRADs are installed next to existing SAI cabinets which are often the same height or taller than the VRAD additions (a fact that Karl always fails to report in his "VRAD exposes" ). The property owners already know that they have a cabinet on their property so the addition of a VRAD shouldn't be such a shock to them.


tad2020

join:2007-07-17
Orange, CA

Here in Tustin, CA, AT&T has started going back and installing more VRADs where they just finished installing them. These are the full VRADs they've used before and at some places they're placing new full SAIs too. Some of these new ones are just a block from another. I'm guessing they're having some serious issues getting things working properly here when even 2000' loops aren't working.

The VRADs the use here are just as tall at the SAIs but twice as wide, so they block the sidewalks more which as been causing them to move things around a lot. Some of "mega" VRADs they install near housing developments are nearly 6' tall and 4' square. I've seen a few "tall and skinny ones around in nearby cities, their like 5'x2'x3', but they have only been installed next to the old PacBell DSLAMs that are the size of a small SUV.



tad2020

join:2007-07-17
Orange, CA

I drove by one of the tall, skinny ones at lunch, they're taller than the DSLAMs (which are already 6'), I'd say they're 7'x4'x2.5'. They're huge actually, they just don't look like it next to those monstrous DSLAMs.


patcat88

join:2002-04-05
Jamaica, NY
kudos:1

reply to d_l

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said by d_l:

said by djrobx:

I don't think the FTTN strategy was necessarily a bad idea, but they needed to put nodes closer to homes.
Just how are they supposed to do that? The VRAD nodes are placed adjacent to the existing SAI fan out points of the F2 lines.

Placing more nodes would require chopping up and re-engineering the copper network to include "mini-SAI"s with each of these new nodes (mini-VRADs) that you want to deploy. Can you imagine the POTS outages this re-engineering program would cause while the new SAIs were installed?

If, say, they halved the copper loop distance with these closer nodes than what they have now, that would mean they would be installing at least four times more SAI/node boxes than they are now. Certainly these hypothetical boxes would be smaller than the current VRADs because they would be designed for fewer connections, but four times more installations would cause more grief from four times more property owners that would find these new boxes installed on their property ROW.

The current overbuild VRADs are installed next to existing SAI cabinets which are often the same height or taller than the VRAD additions (a fact that Karl always fails to report in his "VRAD exposes" ). The property owners already know that they have a cabinet on their property so the addition of a VRAD shouldn't be such a shock to them.
Wrong.

Here are 2 examples of VRADS 100s of feet away from the neighborhood cross connect cabinets. Doesn't help loop length either.

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