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

To: rkral who wrote (36822)9/6/2003 8:41:41 AM
From: Peter Ecclesine  Read Replies (1) | Respond to of 196533
 
Hi Ron,

The reason you have to buy a dual-mode handset is that the entire network is not using a single backward-compatible standard, rather frequencies are dedicated to each standard in proportion to revenues, which vary by location.

WCDMA uses 5 MHz channels, GSM 200 kHz channels, so what you are calling '*Truely* backward compatible' is not in the definitions.

petere



To: rkral who wrote (36822)9/6/2003 8:48:37 AM
From: Peter Ecclesine  Respond to of 196533
 
Hi Ron,

'multi-home' means there are multiple simultaneous sessions between the handset and the called service (e.g. seamless handoff between Bluetooth and cellular).

You might start a cellular call, then walk inside your office, where a PBX that connects to that cellular operator can also be accessed by Bluetooth. The handset and PBX 'multi-home' the call.

petere


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