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To: techlvr who wrote (118681)	5/11/2002 8:59:54 PM
From: Eric L	Read Replies (1) \| Respond to of 152472

techlvr, << What do you mean? The CDMA path is fully backwards compatible at all steps. No one is forced to get a new phone. Not so for the GSM path. >> Perhaps you can explain that to me. Now let me explain something to you. Any GSM user can use a GSM phase 2 phone for voice and (circuit-switched) data services (data at 9,6/14 kbps depending on coding scheme) on any GSM network, regardless of whether that network has upgraded to HSCSD or GPRS. Same applies to any 3GSM network (unless we are talking about a greenfields operation that has elected to not support GSM GPRS - those will be few and far between). << Once on the CDMA road, a phone will always work on the network. >> Once on the GSM path a phone will always work on the network (with the exception of the greenfields situation I described above). << To start significant data abilities with the GSM path, you need a phone with GPRS >> To start what you call "significant data abilities" with 1xRTT you need a phone with a 1xRTT chip, and supporting browser and other software. << and at least another when switched to WCDMA >> Correct. Same if you want a 1xEV-DO phone. You may need a new phone even if you have a 1xRTT phone with a MSM5100 chip (capable of supporting peak 307 kbps when networks upgrade to release A) because the MSM5100 is not fully Release A compliant (that’s the MSM6100 scheduled to sample H2), and a software upgrade may (or may not) be available to flash when the networks upgrade. That is a handset vendor/carrier decision. << Perhaps no new phone is needed when a network is upgraded to EDGE, so I was wrong. >> A new phone will be necessary to take advantages of EDGE capabilities, but a GSM phase 2, or GSM GPRS phase 2+ phone will work on a GSM network upgradable to EDGE. << Only twice as many phones on the GSM road. >> Not really. - Eric -