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Technology Stocks : Qualcomm Moderated Thread - please read rules before posting -- Ignore unavailable to you. Want to Upgrade?

To: Eric L who wrote (36843)	9/6/2003 11:46:18 AM
From: rkral	Read Replies (1) \| Respond to of 196545

Eric, re "the definitions of forward and backward compatibility of GSM Phase 2+ and 3GSM UMTS WCDMA, are defined and dealt with and continue to be defined and dealt with in the 3GPP2 GSM/EDGE standards and the corresponding 3GPP2 3G standards " Now I believe you when you say the standards contain definitions of forward and backward compatibility. But they apparently do not first meet the common English definitions ... >>"A system is backward compatible if it is compatible with (e.g. can share data with) earlier versions of itself, or sometimes other earlier systems, particularly systems it intends to supplant. Forward compatible -- A system is forward compatible if it is designed to be compatible with planned later versions of itself."<< hyperdictionary.com hyperdictionary.com You're presenting a red herring argument IMHO. Let's apply an "acid test". Picture two CDMA RANs side-by-side .. the first a cdmaOne RAN .. and the 2nd a CDMA2000 1x RAN. I have a cdmaOne handset and you have a 1x handset. We can both get cellular service in both RANs. My cdmaOne handset operates in the 1x RAN because of backward compatibility of the RAN. Your 1x handset works in the cdmaOne RAN because of backward compatibility of the handset. Now picture two "GSM" RANs side-by-side .. the first a GSM network .. and the 2nd a WCDMA network. I have a GSM handset and you have a dual-mode GSM/WCDMA handset. I can't get cellular service in the WCDMA RAN, because the RAN is not backward compatible with a GSM handset. You can get cellular service in both RANs .. but that's because of backward compatibility of the handset (via its dual modes), not because of backward or forward compatibility of the GSM or WCDMA RANs. Regards, Ron