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

To: Frank A. Coluccio who wrote (8510)	9/15/2000 11:15:29 AM
From: justone	Respond to of 12823

Frank: A "unified" 3G handset that supports NA & GSM standards requires a "quintuple-mode" GSM/TDMA/CDMA/UTMS and is able to operate in an "triple band " 800/900 MHz band, a 1.7 to 1.9 GHz band and a 2.5 to 2.69 GHz band. Now you suggest a multi-browser. If you put all this in maybe you will cause cancer from the handset! My own belief is that mobility requires one major area that will remain 'closed': location. Currently this is done using SS7 TCAP queries to a home location register (HLR) - essentially a real time database giving ~200 bytes of subscriber identity and current location, and a visitor location register (VLR) that is a sort of temporary record stored to help the mobile switch handle roaming and hand-off. Now you will need something similar for 'open' IP access (probably this is already in the next releases of GSM MAP and IS-41) just to allow access to the network. This method also helps the carrier bill you for your usage, and perform security checks, which is a real issue in mobility. There carrier owned functions will be needed for all solutions, and will likely use a closed SS7 over managed IP network. So the debate is "how open" is a protocol AFTER you perform a 'mobility login'. The carrier gateway for WAP or other ideas is really a way of throttling users who might try to use too much spectrum, and that has to happen, unless we get more spectrum. If an alternate scheme is proposed that doesn't use a gateway, they will find some way to throttle and bill you, I'm sure, to project their investment: the spectrum.