To: axial who wrote (21240 ) 5/4/2007 7:13:51 AM From: Frank A. Coluccio Read Replies (2) | Respond to of 46821 Hi Jim, While it's true that IP has taken over as a dominant force, I don't hold it out as an ideal, although I agree that it's the best direction to take at the moment, given the alternatives. On its face, the term "technology neutral" appears straightforward enough, but on closer examination it demands a tighter definition, or, more to the point, maybe it has to be debunked entirely. A technology cannot be both neutral, on the one hand, and dominant to the point of the exclusion of all others, on the other hand, all at the same time. Is anyone holding out the proposition that states that both WiMAX or WiFi can coexist in a flourishing manner within the same narrow bands that we've been discussing here? Perhaps that is the case. I'm just asking. The WiMAX paper and Peter have both discussed the argument of FDD and TDD adjacencies, which, to me, speaks to the qualities of selectivity vs. interference. My tendency is to quickly turn my attention to the work of folks who are smarter than I in this discipline, who go to lengths to dispel the 'myths' associated with spectrum as property and "frequency interference", whether such interference is due to governmental manipulation during the early days of regulation, or because radios have been designed specifically to permit such interference to take place following the line of thought that states that the idea forms the parameters that enables the reality to not only become possible, but highly likely, as well. David Reed's paper "The Myth of Interference" comes to mind:dir.salon.com My semantic nit-pick aside for the moment, against the backdrop of all that's been discussed thus far I keep experiencing flashbacks of an earlier era when I was a Ham operator on the 80 meter and 40 meter bands -- 3.x MHz and 7.x MHz, respectively. On 40 meters, especially, I recall vividly "tuning in" to 7.1 MHz only to find that thousands of other Hams sending Morse code simultaneously, one atop the other atop the other atop the other, causing an audio effect that could only be described as the cacophony of multiple train wrecks taking place all at once. Yet, through some tweaking of the main tuner and a little bending of a beat frequency oscillator, combined with being able to aurally discern individual Hams' "fists" (their acoustic signatures marked by the cadence and speed of their sending, along with the pitch I assigned to them by tweaking the beat frequency oscillator) I could pick out each one and converse with them, as long as they didn't fade below a certain received power threshold, almost at will. I should also note that Morse code (continuous wave) operation and AM Voice (Phone) use different, albeit adjacent, slices of spectrum. See: csgnetwork.com I'm only half-way through the WiMAX paper. Later. FAC