Text 5857, 102 rader
Skriven 2005-07-10 16:46:20 av Randy (1:379/45)
   Kommentar till text 5853 av Mike '/m' (1:379/45)
Ärende: Re: Everything You Need to Know About Next-gen Broadband
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From: "Randy" <dev@null.org>

One of my co-workers has Verizon FOIS - he's impressed, and he's been in
networking a long time, so he's seen it all. He commented that using the VPN
connection is almost as fast as being inside the office.

"Mike '/m'" <mike@barkto.com> wrote in message
news:q2n2d11nkpklgs34m96ul15r6vsst58231@4ax.com...
>
> http://www.broadbandreports.com/shownews/65298
>
> ===
> ADSL2+? VDSL2? Fiber to the Curb? Fiber to the Home? DOCSIS 3.0? It's
> hard to get to the truth behind the constant stream of belligerently
> optimistic press releases. We sit down with industry reporter Dave
> Burstein to try and make sense of next generation broadband deployment,
> and find out when (if ever) you'll begin to see next gen speeds from
> your broadband provider.
>
> BBR: What can we really expect in regards to a bell next-gen deployment
> timeline?
>
> DB: In three to four years - because constructing facilities for
> millions of people take that long - expect that half of Verizon should
> have fiber at 15-100 meg, otherwise slow DSL. Half of SBC should have
> DSL at 10-20Mbps, from existing boxes 2,000-5,000 feet away (FTTN). The
> rest will be slow DSL and satellite resale. One-tenth of BellSouth
> customers should have 50Mbps+ service from fiber to the curb. Half of
> the rest should have 10-30Mbps DSL, often using two lines.
>
> BBR: As we discussed yesterday, Verizon seems like the poster child of
> how to do a next-gen deployment correctly. Your thoughts on their Fios
> plans?
>
> DB: Verizon is going as fast as it can building fiber; one newspaper
> reported 2,000 crews working just in Virginia! It's really that big a
> job to rewire a third of the U.S. All the others are constrained more by
> their decision on how much to spend, not construction limits.
>
> Verizon wants fiber to the home. That's the big deal. Three million
> homes passed by the end of 2005. They've budgeted for, and are likely to
> deliver - a total of 7 million by the end of 2006 and 15 million by the
> end of 2008. That's about half of their 1/3rd of the country target - an
> enormous build costing $15-20 billion. Verizon and NTT in Japan are the
> only two large carriers in the world doing large volumes of fiber.
>
> Currently, Verizon has a BPON network with video that matches cable on
> one wavelength and 19 meg down/ 6 meg up. They intend to switch to GPON
> for new builds as soon as it's ready, and have pushed manufacturers to
> have equipment by mid-2006 and accelerated the international standard.
> That's designed for 100 meg symmetric and higher, for real.
>
> For the 20 million plus other Verizon subscribers, they will continue
> offering DSL and have given no indication they'll jump from the 1-5 meg
> ADSL speeds to the 10-15 meg ADSL2+. They stopped the DSL build at 80%
> or so to concentrate on fiber, but I believe are now going back to reach
> 90%+. Because they were considering selling rural lines, they didn't
> invest, leaving half of Maine unserved.
>
> BBR: How about SBC's "Project Lightspeed"? Our understanding is that SBC
> was testing an ADSL2+/VDSL hybrid, but was unhappy with the results;
> they should should soon announce the use of VDSL2 for their next-gen
> network and U-Verse IPTV services, correct?
>
> DB: SBC is selling satellite to 50% of their users -a fancy TIVO style
> set top and a slow DSL connection, and upgrading the rest to low profile
> VDSL2 they call fiber to the node. From the projected 2,000-5,000 feet,
> low profile VDSL2 is maybe 20 meg down, 1-3 meg up, most of which will
> be used for their video. They've slipped a year, with 2008 now the goal
> for 18 million homes completed out of their 30 something million home
> target. Also called "fiber to the press release" (it's really DSL) and
> "fiber to the rich" (they are only building the "high-value" customers).
> Investment is less than 30% of what Verizon plans.
>
> BBR: How about BellSouth? Our understanding is they had run more fiber
> than the other two bells previously - and first settled on ADSL2+ - but
> now say they'll eventually embrace VDSL2?
>
> DB: BellSouth has 13 million lines, a million of which have fiber to the
> curb from a quiet build begun years ago, yes. Those are the lucky ones,
> because they will be upgraded to 100 meg symmetric VDSL over the next
> few years. Think 60 megs in practice, but still pretty good. BellSouth
> has just picked that build up to 200,000 lines for 2005 after slowing
> down for a few; unfortunately, at that rate it will take them fifty
> years to complete their rollout.
>
> The others at BellSouth are getting a build ready that will be much like
> SBC's, with DSL from a fiber node in the neighborhood. They intend to
> bond together two lines for most customers, to give you speeds closer to
> 30 meg down - more than the 15-20 meg SBC plans - because they think
> you'll need that for HD video.
>
> Nominally ADSL2+, will morph into VDSL2 low profile soon. But VDSL2 low
> profile really is a slightly improved ADSL2+ (2-5 meg faster at these
> distances), not the 100 meg "high profile" that only works 500-1000 feet
> they are using for the lucky fiber to the curb types....
> ===
>
> /m

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