Interface and interface method of element management server in wireless telecommunication system

An interface of an EMS(Element Management System) server in a wireless communication system and an interface method are provided to enable the EMS server to individually link with an ACR(Access Control Router) and an RAS(Radio Access Station) so that the ACR and the RAS can be directly managed by the EMS server, while more efficient operation and fast maintenance can be available for the RAS. The first OAM(Operation, Administration, Maintenance) management block(160) includes a function block(162) for performing at least one of OAM functions of an ACR(300) and an RAS(200). An element interface block(110) transmits a message for performing the at least one of the OAM functions to the ACR(300) and the RAS(200), and receives signals from the ACR(300) and the RAS(200). A data interface block(120) transmits data requested from the ACR(300) and the RAS(200) to the ACR(300) and the RAS(200), and receives data on the at least one of the OAM functions to send the data to the first OAM management block(160).