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To: DaveMG who wrote (2183)	9/15/1999 4:19:00 PM
From: w molloy	1 Recommendation Read Replies (1) \| Respond to of 34857

Dave - Mika is entirely correct. Mika wrote "GSM not only describes the air interface (which is TDMA based) but also the core network infrastructure....that's it in a nutshell. So WCDMA is intended to be overlayed GSM core networks (re-use)" WCDMA air interface will replace the GSM air interface. The GSM core network infrastructure remains intact. w.

To: DaveMG who wrote (2183)	9/15/1999 4:43:00 PM
From: slacker711	Read Replies (1) \| Respond to of 34857

I'm sorry Mika but that statement just makes no sense. The air interface is CDMA and not TDMA based. Where did you come up with that? I believe that Mika is talking about current GSM (2G) when he says that the air interface is TDMA based. Though they will have to change out their TDMA air interface, W-CDMA was customized to work with the GSM network infrastructure. However work is being done to do the same thing with CMDA2000. I'm not sure of the details (Eric L. probably could give details) but I assume that they are attempting to add SIM cards and other things that W-CDMA incorporates. tiaonline.org Slacker