The PlayStation 3 has no AOSS button. When setting up a PlayStation 3 to connect to a wireless network, one part of the process will prompt the user to press the AOSS button. This button is actually located on the wireless router and not on the PlayStation 3 console.
AOSS is short for Automatic One-Stop Secure System, which is a system that allows users to connect to a secured wireless connection at the touch of a button. Developed by Buffalo Technology, this feature is designed for WEP and WLAN wireless access to have the maximum level of security.
When setting up the PlayStation 3 to connect to wireless network, it will be a good idea to turn off all network devices for at least 2 minutes. If the router has the AOSS feature, it will also be helpful if it is already set on Automatic before connecting the PlayStation 3 to the network.