| 摘要 |
A method and system for restricting at least partial usage of a wireless communication device (100), like a mobile telephone, includes attempting to establish a communication channel (105) across a data network, such as non-IMS VoIP communication channel over a wide area network (103) like the Internet. Where the device (100) has been subsidized by a voice over data protocol service provider (121), the method permits such communication only when data communication channels having service provider identifiers (123) corresponding to one or more permitted data access identification codes (201) are accessible. Where they are not, at least partial usage of the device (100) will be restricted.
|
