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To: techlvr who wrote (115907)	3/23/2002 9:58:16 AM
From: Rajala	Respond to of 152472

>... a GSM operator need do nothing significant to upgrade >to Ev DO. Same base stations ... A simple jump to full >fledged 3G. > >Is there a problem? No there is absolutely no problem. Not if we don’t take into account the fact that it does not make any sense. If you look only from the radio access point of view such an oddball off-standard gnome just might work. Not as well as the competition of course. The old GSM/GPRS/EDGE base station will stay right there on top of the grain silo and every Tom Dick and Harry knows how the WCDMA snaps on. The biggest problems cometh with the bigger picture. There the EV-DO will be rejected like a dog’s liver from a human body. If we look at the complexities of a GSM/GPRS/EDGE/WCDMA handsets from various vendors, backwardly compatible with everything, seamlessly sliding from one technology to other, interworking with all the different equipment manufacturers both on the radio and core sides. Then you throw in all the existing different GSM services standards and make this baby to work with <0.5% drop call ratio, well, you don’t want to throw in extra betamax systems. Not to mention how such an unfortunate technological choice would screw up the operator’s roaming capability and revenue. And how 'bout the impact on handset portfolio? My verdict: keep doing the spin but even Ken Lay wouldn't buy this. - rajala