| 摘要 |
PURPOSE:To enable connection control by automatically accepting extension connection information by sending an extension number by a push-button dial signal by responding main-wire incoming by the sound signal of a sound accepting means and then by receiving, recognizing and then connecting it to the extension. CONSTITUTION:In response to main-wire incoming, the channel of main-wire trunk 2A is led and connected acceptance trunk 10A via operator's line 20 and from corresponding sound answering device 11, an acceptance message sound signal is sent to a person who is requesting an extension connection. Then, the extension connection information of a requester's push-button dial (PB) signal is received and recognized by PB signal receiver 12. On the basis of the result, controller 5 transmits a normal call signal or another call signal, which can be discriminated from the normal one, to EXT4 via switch network 3. On the answer, the recorded and reproduced signal of the transmitted and received sound signal regarding the main-wire incoming is connected to main-wire trunk 2A after being sent from sound recorder 13 or immediately without being sent, permitting a talk with the extension subscriber. |
