| 摘要 |
A system and method of interworking a cellular telecommunications network with a packet data network. Once a circuit-switched connection is established from a mobile terminal operating in the cellular network to the data network, a registration process is conducted in the data network and a mobility context is established for the mobile terminal. The mobility context includes location information (54) for the mobile terminal stored in a foreign agent (53), and an address (56) for the foreign agent stored in a home agent (55) in a direct access unit (DAU(43)). The mobility context for the mobile terminal is maintained in the data network even if the circuit-switched connection is released. Thereafter, if a mobile-terminating data call is received in the data network, the circuit-switched connection is reestablished, and the call is delivered to the mobile terminal.
|
