The method for solving the problem not capable of making phone call after the base station disconnects to the base station controller and comprises: the control unit of base station detects the transmission link of base station; when deciding a transmission interruption happens, the working mode of base station is set as a fail-soft mode; the signaling processing unit configures the frequency carrier, it includes system information, channel configuration and notice message description; then, the signaling processing unit fills out the received system information into the system message field, and transmits the notice message description on NCH channel; after receiving the notice message description, the mobile phone stays in relevant time slot according to a failure-soft channel ID configured for it in order to initiate or receive the PTT calling. |