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To: TobagoJack who wrote (55593)11/5/2004 11:03:41 AM
From: Maurice Winn  Read Replies (1) | Respond to of 74559
 
<once airplane are fited with WIFI, I will be all set, as CDMA is no more useful than GSM in that environ>

Gidday again Jay. Is your voip via skype.com? That you for using Skype. That too is delivering me money via son who works for skype.livedoor.com [he pays interest on business loan]. Skype is averaging 10,000 downloads an hour - what a phenomenon. Anyone not using it is missing out on a good thing. The network effect is super-powerful. Google might be an also-ran by comparison because even the ignorant, who don't want to ask Google stuff, will want to communicate = human attribute first before all except water, food, air, warmth and not being eaten.

Thank you for using WiFi as you might one day pay me via roamad.com though it's still very much a start-up company and almost certainly will pay me via a CDMA/WiFi phone royalty and maybe ASIC purchase [not to mention BREW, gpsOne, radioOne, Eudora etc].

In an aircraft, you will use Globalstar which Airbus and Boeing are both going to start using in 2006 I think it is. Your WiFi or maybe GSM or CDMA link will deliver your call to the on-board Globalstar repeater.

The feature mix is a function of technology.

CDMA is more useful than GSM in an airplane, because as everywhere spectrum is not unlimited and data rates are wanted at a low and lower price, which means CDMA [if not OFDM later] for signal propagation far enough to reach the ground or a satellite. GSM has had it's day. TDMA encoding is simply too inefficient to enable the number of people who want to use a lot of data to squeeze into the spectrum.

Your required feature mix includes high data rate at a low cost. You can't do Skype on a slow link. GSM is slow. GPRS is not really good enough to handle it. Sending pictures is very slow on GPRS/GSM. On 1xEV-DO.

Anyway, it'll be interesting to see what you do choose. Please report the favoured instrument for mobile cyberspace when money actually changes hands.

TIA,
Mq