Abstract: A method and apparatus for network accessing configured to prefix filtering one or more wildcard identity for an International Mobile Subscriber Identity (“IMSI”) application is disclosed. Upon receiving a request of a new rule with system identification (“SID”) for network access, a process of wildcard prefixing is able to identify a wildcard in a predefined field of the SID. The SID, in one example, is an IMSI. After retrieving a specific prefix in accordance with the wildcard, the wildcard is replaced with the specific prefix in the predefined field of the SID to form a modified rule. The predefined field of the SID can be a field for mobile country code (“MCC”), mobile network code (“MNC”), or mobile subscriber identification number (“MSIN”). The process subsequently inserts the modified rule into a memory structure.

Abstract: A wireless device transmits a request message for receipt by a wireless network to at least one of request attachment of the wireless device to the wireless network and request location updating for the wireless device from the wireless network. The wireless device subsequently attempts an emergency call to the wireless network regardless of whether or not the wireless device receives a response to the request. In this way, the wireless device can make the emergency call promptly and without significant delay.