On 10/22/08 09:02, Nils Goroll wrote:
> Hi Garrett,
>
>> afe is an excellent reference for a "simple" 100Mbps ethernet driver.
>
> Thank you for your advice.
>
>> Of course, for a 3G card, what is the interface? Does it emulate
>> ethernet?
>
> If I understand this correctly (I don't have any vendor documentation,
> but there are Linux and BSD drivers), the card speaks plain IP(v4), so
> I thought I'd have to do 802 wrapping/unwrapping.
See Jim's comments. My experience with 3G cards in the past (including
a certain product from Option that supported HSDPA) was that the card
exposed itself as a serial port that you hooked up your PPP daemon to.
It was basically almost the same as talking to a modem.
If the card exchanges IP frames in some other encapsulation (and they
must be *somehow* encapsulated, mustn't they?) then you'll have to
figure more out. Inventing a new link layer is probably not the best
idea here.
In any case, it sounds like more research into what the actual framing
format used is, is required.
-- Garrett
>
> Any better ideads?
>
> Thanks, Nils
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