Re: ipw2200 regulatory region setting

Andreas Steinmetz wrote:
> Zhu Yi wrote:
>> On Sun, 2007-12-09 at 01:18 +0100, Andreas Steinmetz wrote:
>>> 1. You may obtain a card that has some regulatory region in the eprom 
>>> that does not match the regulatory region you're actually in. In my
>>> case 
>>>   the 2915ABG card I obtained (in germany) has "ZZH" in the eprom but 
>>> actually for my regulatory region (germany) I do need "ZZE".
>> Ask your vendor to replace with a correct region card.
>>
> 
> Which doesn't make sense. Buy a card for about 20€ to 25€ online and add 
> shipping and handling. Then you shall ask the vendor to replace the 
> card? From a cost perspective total overkill.
> 
> Anyway, think of any average and reasonable AP. You can select the 
> country and thus the regulatory region. Why should this be different for 
> the AP's client?

You can *restrict* the client to a subset of the channels certified
for use, but you can not *expand* the set of channels.

Meaning, if you have a client that can tune to channels 1-13 and you
go to a region that only supports channels 1-11, you should be able to
tell the stack not to use channels 12 and 13 (I don't know if you
currently can; adding a parameter to "disable" a set of channels seems
like a reasonable request if a mechanism does not already exist to do
that.)

However, if you have a client certified only for use on channels 1-11,
and you travel to a region where channels 12 and 13 are available, you
should not change the client to try and use channels 12 and 13.

James

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