PRIVATED LINE TELEPHONE CALL PATH SERVICE METHOD OF PRIVATE BRANCH EXCHANGING NETWORK

摘要

The method calls any one of internal subscribers by using only the subscriber number and the code of the switching network. The method includes the steps of: analyzing the code of the target switching system by receiving a dialed call by accessing an exclusive line table; scanning a first exclusive line path to carry out relaying; scanning the state of the use of the detected exclusive line upon finding that the detected line is an adjacent line; searching an exclusive line path by accessing the exclusive line table upon finding that the line is busy; and transmitting the received dial information to the relevant exclusive line upon finding that the searched exclusive line is not busy.