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Technology Stocks : LAST MILE TECHNOLOGIES - Let's Discuss Them Here -- Ignore unavailable to you. Want to Upgrade?

To: DenverTechie who wrote (4960)	8/12/1999 7:19:00 PM
From: Frank A. Coluccio	Respond to of 12823

Denver, "The response I gave was by no means exhaustive, just illustrative at an extremely high level of some of the very sticky technical and operational issues confronting VoIP for cable systems... " Don't sell yourself short. Yours was a better treatment of VoIP over cable than existed previously on the VoIP thread itself. We've touched upon it at times, but never exhaustively. And probably for good reasons: This topic is still in a state of flux with opposing approaches being suggested by different factions. As is the case for all forms of packetized voice today. There are at least a trilogy of IETF/ITU/Edgist approaches at this time on the larger issue of IP Telephony/VoIP/and Internet Telephony, all being different versions of packetized voice which use the Internet Protocol on some level. Some adhere to RFCs more than others, and some adhere (almost entirely) to the emulation of PSTN signaling and transport processes. Directory standards is another area that are all over the map - and I mean that literally, in some cases. The list or unresolved issues is actually endless, especially when you break away from the constraints which have existed historically on the PSTN, and begin innovating. We talked about VoIP/cable and VoIP over DSL [VoDSL] - both here and in the VoIP thread - about two years ago. It appears that VoDSL will mature a lot more quickly than cabl-iphony, as is being demonstrated now by the release of various SO/HO all-in-one DSLAM/Gateways which are now making their entrance into the marketplace. Some forms of VoDSL will employ IP and some wont. This too is cloudy to me, since the field is wide open at this time, and your guess is as good as mine as to where it will all wind up. If the johny-come-latelies-to-the-'net-switchheads have their way, it will look very much like what we have today, and soon. If the netheads have their way, it will take some measure of time longer, and they will allow the normal processes of constant innnovation take its own course, as time goes by, but it wont look anything like the PSTN if they have their way. Regards, Frank Coluccio