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brooks7
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brooks7,
User Rank: Light Sabre
3/31/2016 | 11:41:29 AM
Re: Alt DSL technologies
The basic problem is that its not cheap.  Let's talk about this problem G.fast for MDUs.

1 - The building is likely served by copper.  In most cases, there is no electronics in the basement,

2 - First, AT&T needs to pull access fiber past the building.  In most cities this is underground construction (note this is required whether you are doing G,fast or FTTP).  It is expensive and there has not been a lot of movement to loewr the cost of construction...in particular when unions are involved.

3 - Now, it turns out that AT&T can not guarantee that it can put electronics in everyone's basement or wherever the telco space is.  It has to reach an agreement with the owners in some if not all cases about this.

4 - For large buildings, you might not meet the reach requirements with units in the basement.  Given that you are depending on the quality of the in-house wiring you need to derate the best case.  Again, this might cause issues with owners.

5 - Now, you have put in the DSLAMs and can start selling people.  What do you do for people that don't upgrade?   You can't just bulk cut off service that they already have.  That means that you have to be able to pass through service that does not get terminated at the DSLAM.  So, you have to also look at NEXT/FEXT for other services.

Which leads to the basic question (and I am not going to go through potential powering issues here):  What number of buildings can you realistically put this in and get enough of a take rate to make it worth it?

On top of that, will they offer video over this service?  I can imagine that the Direct folks would like that as MDUs are hard for them.  One challenge is that some MDUs (I lived in one in Florida) do their own video service.  

Again, all of this potentially limits the percentage of lines that can be serviced by these technologies unless you just go for it.  Like U-verse or FiOS.  

Why would they do this?  You could feed the DSLAM with GPON and poof you could up your Gigabit offering without doing a lot of work in comparison to burying fiber to SFHs

seven

 
KBode
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KBode,
User Rank: Light Sabre
3/31/2016 | 10:26:59 AM
Alt DSL technologies
These alternative DSL technologies have been pushed for a decade but I rarely see them actually deployed in the States in any scale (I think because there's no competitive incentive to upgrade in many, many markets). You'd think AT&T'd be chomping at the bit for a technology like this that could inexpensively let it compete with cable, not just casually contemplating it as a possible solution. 
davidhoffman5
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davidhoffman5,
User Rank: Lightning
3/31/2016 | 9:04:56 AM
G.Fast
If AT&T had properly supported VDSL2 for their entire POTS network they would have already pushed fiber deeper into thier network. G.Fast would not be such a huge effort.


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