Identifying telephone numbers of telephone lines and creating an inventory database

摘要: The invention relates to a method, control device and system for automatically identifying directory telephone number of particular telephone line in an access network, for easily creating inventory system. network includes local exchange (12, 72, 94) capable serving plurality numbers and connected at least one unit EU (14, 54, 96) supporting through the lines. (26, 30, 40, 58, 80) is adapted telecommunication with EU, provided with caller identification CLI port (29, 35, 86) particular check telephone (28, 33, 44) assigned exchange. control device capable causing any specific lines belonging dial check number; check number operative identify, by its port, the directory calling associate the identified which has dialed number.