| 摘要 |
PURPOSE:To improve the service by constituting the system that two subscribers are connected mutually without recognizing it as busy state of opposite parties if the two subscribers make a call simultaneously to each other as called parties. CONSTITUTION:A subscriber memory 2 is collated in an intra-office connection, a dial destination of an opposite subscriber and a subscriber number of a sender are collated and the subscribers are retrieved in two-way. When the result of this retrieval is coincident, a channel switch 3 is closed so as to set a path between two subscribers A and B calling the opposite parties with each other at the same time. |
