I've seen cellular service agreements that discuss all more almost all usage
originating from a single cell site.
Apparently, they discourage using fixed-location cell adapters to jack-in to
the cellular network.
I suppose one could use directional antennas on the roof, and target two or
It's not a buck a meg.
15/2 service is about $45/month:
over $3/Mbps downstream
over $22/Mbps for the upstream
30/5 service is almost $200/month:
over $6/Mbps downstream
about $40/Mbps for the upstream
There should be a little money in their model to
Jay:
In your note below you speak of 'moving on to something else' when PPLB comes.
PPLB destabilizes TCP. It elicits erroneous retransmissions, squanders
capacity and lowers performance.
You are suggesting that we replace TCP in all the computers in the world?
Bob
At 01:43 PM 4/24/2005,
Steinar:
There is a large body of work from competent and well known
researchers that assert the claim. I certainly lack standing to question their
results.
Empirically, download speeds to home are nearly cut in half (18Mbps) from
sources
that are subjected to packet reordering along the
Per Packet Load Balancing is not TCP friendly. (this discussion is orthogonal
to DNS)
PPLB leads to packet reordering.
Quite a few empirical and theoretical papers have been published (in peer
reviewed fora and elsewhere)
that discuss the negative consequences of packet reordering. A Google
The A in A-GPS does not come from 12,500 miles away, as their web site
asserts.
The A is ephemeris and other over-head info, and in this context is
transmitted by the mobile phone network.
GlobalLocate Corp and SIRF both tout receiver designs that incorporate
massively parallel correlator
The subject is of most concern at the edge.
There are multiple long-haul providers, but often
the consumer has only one option for multi-megabit connectivity.
The entity currently enjoying the edge monopoly attempts to
create vertical service alignment, to maximize profit.
They DON'T want to
Hi Paul:
The article you mention is similar to one at the BBC:
http://news.bbc.co.uk./2/hi/technology/4079397.stm
The source cited in both articles is the same: Sandvine.
These guys are not unbiased. They make bandwidth-limiting devices.
They proffer their boxes to cable/dsl operators that
For residential users on cable-modem, the plan will deplete a scarce resource:
upstream transmit opportunities. The DOCSIS MAC layer imposes an upper limit
on the quantity of upstream transmissions (essentially PPS limitation, unless
concatenation is employed, and concatenation is probably
At 11:10 AM 4/29/2004, Iljitsch van Beijnum wrote:
On 29-apr-04, at 7:02, Stephen Sprunk wrote:
The feds clearly have the power to get through or around encryption
suspected criminals are using: the FBI reports that there have been _zero_
cases nationwide over the past several years where the use
There are indoor units that have multiple coil sets.
One can be utilized for mechanical cooling, the other
can be used for free cooling mechanisms.
For example, a water loop can be implemented
that rejects its heat via a roof-top evaporative tower.
(e.g. the big BAC boxes you see steaming
The article says there were three disruptions prior
to this most recent event. It goes on to say:
Early in the morning of Sept. 3, some criminal strolled into a
Qwest Telecommunications server station with tools in hand
and carefully sliced one strand of wire.
For the
Steve, et al:
There may be issues of collateral damage.
While Microsoft and Verisign battle one another
for the advertising revenue available from intercepting typographical
errors,
innocent third parties may have to repeatedly pay to modify their software.
The Verisign interception mechanism
As Mr. Dillon observed, regional service seems prudent, if onlyto
minimizetiming problemsat the IP layer, much less for reliability
purposes.An alternate time source could be the GLONASS
system.Receivers do exist, but I have never used one.Sanity checking
sources could include WWVB in the
I believe the old IBM routers used for the NSFnet
implemented fully distributed routing tables in each line card.
At that time, the commercial router vendors were still faulting
routes in to the line cards (or central accelerator cards)
on demand.
I think the good folks at Merit, Watson and ANS
Some sort of in-building cell repeater may be sufficient.
The gating item, I believe, is whether you can receive
adequate cellular coverage outside the building (e.g. on the roof).
If so, then a simple repeater should be sufficient.
If not, then a wired micro-cell would seem to be required.
Ah yes, the infamous FiberMux Magnum.
Seemed to function as a register insertion ring.
Was found to be susceptible to capture effect.
A prime example of data-ignorant, bonehead telco design.
At 09:37 PM 7/31/2002 -0400, Vincent J. Bono wrote:
Anyone remember the Magnum's or MetroLans?
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