METHOD FOR SENDING A CALL TO PLURAL PHONE NUMBERS, ESPECIALLY CONCERNED WITH SENDING A CALL, RECEIVED TO A PRIVATE BRANCH EXCHANGE, TO A PLURALITY OF SELECTED EXTENSION NUMBERS AND PSTN PHONE NUMBERS

摘要

PURPOSE: A method for sending a call to plural phone numbers is provided to send a call, received to a PBX(Private Branch eXchange), to a plurality of extension numbers and PSTN phone numbers selected according to various criteria. CONSTITUTION: A communication network(400) comprises a PSTN(401), a wire terminal(402), wireless terminals(403-1-403-M), and a communication part of a PBX(405). The PSTN(401), the wire terminal(402), the wireless terminals(403-1-403-M), and the communication part, all located in a PSTN address space(404), are connected one another. Also the communication network(400) comprises an extension part in the PBX(405) and wire terminals(406-1-406-N). The extension part and the wire terminals(406-1-406-N), all located in a PBX address space(407), are connected one another. The PBX(405) can control the reception of a call from the PSTN(401) through a transmission path with the intention of making calls to the phone numbers of associated wire terminals(406-1-406-N) in the PBX address space(407). Also the PBX(405) can connect calls to associated phone numbers in the PSTN address space(404) respectively.