| 摘要 |
The procedure concerns set-up of an anonymous telephone call between two persons, A and B, each equipped with a GSM terminal incorporating a proactive SIM card, and a specific anonymous call application according to the following protocol: party A application ACC A enables caller A to select the nickname of B (11) and display information describing B (21). The application of party A sends (31) a call request and information describing A to party B application ACC B via an SMS type message. The application of B displays (42) the information received from A to enable B to accept or refuse the call (52). Application ACC B sends (62) the reply of B to ACC A by an SMS message. If the call is accepted, the application of A sets up (81) the telephone call.
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