Tuesday, June 01, 2004 10:47:26 PM
Hound: Re: ...when I read the chart from page 24 of the VDSL Olympics, the data rates are much slower than NV after 1,000 feet. Please explain what I am missing.
While it looks like the Embarq claims actually exceed the Fx real-world performance between about 300 feet and 6000 feet, the Ikanos product is superior in the short range and very long range. For example, if you look at the following chart for Embarq:
You will see that the Embarq claim at 9000 feet is about 3 Mbps symmetric, or 6 Mbps aggregate. The Ikanos product does well over 9 Mbps at that distance. The same is true for longer distances.
Furthermore, as I have stated before, the Ikanos results have been verified by the T1E1.4 consortium under a variety of real world conditions. Additionally, all of the T1E1.4 tests were done using 26 AWG wire, the same wire gauge used almost exclusively in the field. Embarq claims were based on lab tests with thicker 24 AWG wire. That is good for a 10 to 25% improvement in performance.
So, in summary, your claim that the Embarq "specs exceed all others for over 90% of the applications" is not true. You are comparing unverified claims from tests of a software prototype performed on non-standard wire for a non-existent product to real-world test performed by a consortium of industry leaders on industry standard equipment, and the competition wins on the most important scores - short-range throughput and reach. I would speculate that Embarq (if it ever materializes) would perform much more poorly that its claimed performance under the T1E1.4 barrage of tests, simply based on the difference in wire gauge alone.
Which brings me back to my initial point. The competition has largely caught up with NVEI's claims of speed and distance. While there may be ranges for which the Embarq claims are somewhat better than the competition, there are also ranges where the competition is clearly better than the Embarq claims. The difference in wire gauge alone could tip the scales completely in favor of the competition. Nonetheless, the claims that the Embarq purported performance specifications outpace the competition are simply no longer true. Whatever significant competitive advantage that NVEI ever thought they had is now gone. Remember that it was that same claim of competitive advantage that everyone thought would make up for the lack of industry experience, lack of money, lack of executive leadership, etc.
While it looks like the Embarq claims actually exceed the Fx real-world performance between about 300 feet and 6000 feet, the Ikanos product is superior in the short range and very long range. For example, if you look at the following chart for Embarq:
You will see that the Embarq claim at 9000 feet is about 3 Mbps symmetric, or 6 Mbps aggregate. The Ikanos product does well over 9 Mbps at that distance. The same is true for longer distances.
Furthermore, as I have stated before, the Ikanos results have been verified by the T1E1.4 consortium under a variety of real world conditions. Additionally, all of the T1E1.4 tests were done using 26 AWG wire, the same wire gauge used almost exclusively in the field. Embarq claims were based on lab tests with thicker 24 AWG wire. That is good for a 10 to 25% improvement in performance.
So, in summary, your claim that the Embarq "specs exceed all others for over 90% of the applications" is not true. You are comparing unverified claims from tests of a software prototype performed on non-standard wire for a non-existent product to real-world test performed by a consortium of industry leaders on industry standard equipment, and the competition wins on the most important scores - short-range throughput and reach. I would speculate that Embarq (if it ever materializes) would perform much more poorly that its claimed performance under the T1E1.4 barrage of tests, simply based on the difference in wire gauge alone.
Which brings me back to my initial point. The competition has largely caught up with NVEI's claims of speed and distance. While there may be ranges for which the Embarq claims are somewhat better than the competition, there are also ranges where the competition is clearly better than the Embarq claims. The difference in wire gauge alone could tip the scales completely in favor of the competition. Nonetheless, the claims that the Embarq purported performance specifications outpace the competition are simply no longer true. Whatever significant competitive advantage that NVEI ever thought they had is now gone. Remember that it was that same claim of competitive advantage that everyone thought would make up for the lack of industry experience, lack of money, lack of executive leadership, etc.
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