Abstract: A RF signal choking device includes: a first port electrically receiving direct current, RF signals, and antenna interface standards group (AISG) signals from a base station; a blocking capacitor being provided for blocking the direct current and the AISG signal and transmitting the RF signal; a second port connected to the other end of the blocking capacitor, for outputting the RF signal; a first inductor, one end of which is connected to the first port, for transmitting the AISG signal and the direct current; a modulator, one end of which is connected to the other end of the first inductor, for processing the AISG signal; a third port, which is connected to the other end of the modulator, for outputting the processed AISG signal; and a second inductor, one end of which is connected to the second port and the other end of which is connected to the ground.

Abstract: A method for achieving the multi-numbers per sim card service includes: assigning identification information uniquely corresponding to each number of the multiple numbers of a terminal; carrying, in information of a service request, the identification information corresponding to the number that the calling subscriber intends to use when the terminal initiates the service request; obtaining, by a Service Control Point, the identification information according to the service request, and retrieving, by the Service Control Point, corresponding number with the identification information; and performing connection to the called side by using the corresponding number as the calling number.

Abstract: A method and system for call control, a Business Operation Supporting System (BOSS) and a Service Control Point (SCP) are disclosed. The method includes: upon receiving a call from a switch system, an SCP sends an authentication request with a subscriber identifier of the call to a BOSS; the SCP controls the call according to an authentication result upon receiving the authentication result of the BOSS authenticating a subscriber of the call according to the subscriber identifier of the call carried in the authentication request and subscriber information stored. The system includes the SCP and the BOSS. By using the invention, the benefits of the operators are protected.