| 摘要 |
PURPOSE:To avoid the necessity of a caller for recalling, by providing a specific dial number on the extension telephone set responded to the incoming call in advance and transferring the incoming call to other telephone set through dialing of the specific number. CONSTITUTION:A caller allocation position extension circuit 10 is the extension of the allocated location of called party on the exchanger with a tree circuit. That is, subscribers corresponding to the allocated location at the 1st, 3rd, 4-th and 6-th from the left can be transferred subscribers in the same subscriber group. A subscriber in this group responds to an incoming call, then it can transfer the incoming call to the subscriber preset corresponding to the 3rd from the left in the rectifier mesh circuit 30, by dialing a specific number for transfer, e.g., ''3''. Thus, the necessity of a caller for recalling can be avoided. |
