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To: Boplicity who wrote (30848)	5/25/1999 8:55:00 AM
From: marginmike	Read Replies (1) \| Respond to of 152472

CDMA can handle Data better because it has a higher capacity. As for techno problems that might occur you would have to ask Clark H or Engineer.

To: Boplicity who wrote (30848)	5/25/1999 10:34:00 AM
From: Clarksterh	Read Replies (1) \| Respond to of 152472

Greg - It is definitely true that the capacity of cell systems is bandwidth limited and thus a steady 64 kbps will use about 3-5 times as much of the limited commodity. But, in reality, data traffic like web surfing tends to be much more bursty and thus a web surfer with a peak rate of 64kbps probably has an average rate about the same as voice. In addition there are several other mitigating factors: 1) Economics - As bandwidth per square mile becomes less limited and cheaper, there will be a surfeit of minutes available. Even at $0.005 per minute there is only so much talking I can do, and I will happily pay an occasional rate 4 or 5 times that to surf in the airport at 256kbps, especially if I am a salesmen who is rarely home. In general I think that we cross this boundary to data for a given population when that same population has done all the talking they want. For salesmen I think that they have already reached that point, but we probably won't cross it for the more general population for another few years. 2) Technology and bandwidth limitations - Within the next 10 years I expect smart antennas to significantly increase the bandwidth available per square mile and bring the cost down enough to compete with, at least, xDSL. This should put most of the population over the boundary positted in the first item. FWIW Clark

To: Boplicity who wrote (30848)	5/25/1999 10:35:00 AM
From: engineer	Read Replies (2) \| Respond to of 152472

No, it will not overload the cell and it will not lead to dropped calls. It will actually make the system return for the opreators better. IF they use packet data, then they can run in a mode called "virtual packet". this is where a data call is established and kept running without keeping the actual over the air channel going. So in the case of voice, the carrier must guarantee that your circuit stays fixed over the whole call and thus locks up that call channel. Also he must maintain a certain percentage to be used for handing off the call in case of a moving phone. In virtual packet, the carrier can keep the call up for a few packets, give up this channel to a voice call, wait until another voice call drops and then re-stablish the call. the carrier can also use the channles held in reserve for handoffs for data calls, thus making the cell effciency even higher. If the carrier were to implement the standard call modle like our present dialup lines then they would have the negative side benefits that you think they would. The service that they and the pdQ use are packet based and would just give them more revenue on thier system. The system and user can also throttle back the 86k data rate to go fast and slow as the system resources require.