Abstract: Methods are provided to enable a roaming Wireless Local Access Network (WLAN) customer to select from multiple PLMNs using a single standard SSID. The methods include addition of a Mobile Country Code (MCC) to the SSID; addition of an MCC and a series of Mobile Network Codes (MNC) to the SSID; and reverse Domain Name Server (DNS) lookup for the gateway IP address through the designated DNS server.

Abstract: A method and apparatus for performing SIM-based authentication and authorization in a WLAN Internet Service Provider (WISP) network supporting the universal access method (UAM) of authentication and authorization enabling roaming for customers of mobile service providers onto said networks. In addition, the invention provides a secure way of authenticating the customer's client device to the mobile service provider's network by employing temporary credentials for authentication that provide privacy of the user's identity and prevent replay attacks. Finally, if the WISP network supports the ‘pass-through’ facility, the authentication can be done more securely and quickly.

Abstract: The present invention relates to a pressure actuated valve for use in well completion assemblies. The valve is operable by pressure between three configurations. In a first configuration, the valve is in a locked-closed configuration. In a second configuration, the valve remains closed but is unlocked. In a third configuration, the valve is open. Also disclosed is a method of installing and operating a three pressure actuated valve in a well completion operation.