Hi everyone, and thanks in advance for responses.
I got an Aironet 1041 (Air-LAP1041N-E-K9), and it's configured as standalone mode. I mean, after I've recieved it, I followed the steps to administrate it with web console.
So, everything is working perfect with PC laptops, but there's no internet connection with the mobile devices associated. Sometimes, the AP assigns an IP out of the dhcp excluded range, and sometimes when assigns a correct IP, there's no internet connection on the device.
Something special for the mobile devices? Maybe the "domain-name" option? (because the mobile devices are not in domain of course...)