Method for setting a number plan and providing a service for an advanced intelligent network subscriber in a communication network

1. Field of the Invention A method for setting a number plan and providing a service for an advanced intelligent network (AIN), includes the steps of searching a first trigger which corresponds to a detected AIN call, judging whether the first trigger is a second trigger for a subscriber group, searching subscriber group information of the first trigger when the first trigger is the second rigger and detecting an identification number of a PNP(Private Numbering Plan), searching a PNP corresponding to the identification number from a NTT(Number Translation Table) of the first trigger, and gathering an additional number based on number gathering information of the searched PNP and performing a number translation based on corresponding PNP, thereby setting a certain number plan by the subscriber group and providing a subscriber-based advanced intelligent network service.