Method and corresponding device for processing calling conflict in communication network

A method for processing calling conflict in calling processing device of communication network is provided in the invention. The calling processing device includes the first calling processing unit for processing the first calling originated by the first terminal and the second calling processing unit for processing the second calling originated by the second terminal. When the second calling processing unit receives the ingoing calling message intending to communicate with the second terminal which is originated by the first terminal but the second terminal is in a busy state, the method includes that: the called number in the calling record of the second terminal is queried; if the called number in the calling record of the second terminal is the number of the first terminal included in the ingoing calling message, the originating time of the second calling is compared with the originating time of the first calling; and based on the comparing result, the calling corresponding to the later calling originating time is released and the calling corresponding to the earlier calling originating time of the comparing result is kept on establishing. The corresponding calling processing device and computer program product are also disclosed in the invention.