System and method for transporting a call in a telecommunication network

The system and method, detecting call trigger during call, respectively no need the other service platform and maintain the connected call. The first communication device (106) transmission with the call of call signal and user communication. Signal processor (112) and call signal from the first communication device, moreover selecting the second communication device (108) is. Interworking unit (114) and user communication from the first communication device, moreover from the time-division multiplexing format conversion comprises a second communication device for selecting connected with the user communication asynchronous transfer mode device. Interworking unit of call triggering the user communication. The interworking unit transmits calling mobile phone data to the signal processor. Signal processor and call phone data. Additionally, once confirmed calling mobile phone, a communication interworking unit is for identifying is preferably connected with the user communication the Three and receiving device (110) asynchronous transfer mode unit and transmit the user communication the Three and receiving device.