| 摘要 |
PURPOSE:To increase the number of trunk lines which can be transferred by storing the information of calls to be transferred to plural memory circuits provided in common within the group of telephone sets with the operation of the exclusive button of a telephone. CONSTITUTION:When a central office trunk COBWT has an incoming call, the station answer lamps of multi-function telephones MFT0-3 are turned on via an interface circuit INF. When the telephone MFT0 delivers an answer with the push of a station answer button, a call is transferred between the MFT0 and a trunk line. When a transfer button is pushed under such conditions, both the position informations on the trunk COBWT and a telephone device number 0 are stored to a memory MM1. While a receiver pushes the transfer button of his/her own multi-function telephone. Thus a controller reads out the contents of the memory and connects a multi-function telephone to the trunk line. |
