Services in a telecommunication network

(57) Summary book invention relates to the method for calling service in the communication network possessing at least 1, or two or more terminals and at least two service entities. By the method concerned, a terminal presumes support and service components required since end user service is provided. A set of configuration requests to which 1 for calling each service components which constitute service, or two or more specific service entities and each relate consist of terminals. Each configuration request from a terminal to 1 or two or more service entities. It is directly transmitted by the method which was indirectly transmitted using the assembler unit * of special network support function * book invention for carrying out confit ギュア of the service entity, or was chosen in accordance with the predetermined standard. The present invention relates to the communication network, terminal, and assembler unit for enforcing the method concerned again. ? ?