| 摘要 |
PROBLEM TO BE SOLVED: To permit a receiving person to freely move to another terminal equipment by automatically relaying communication between a previously set destination device and an original calling device in the case of receiving person absence. SOLUTION: When a call comes from the original calling device 21 through a first transmission line L1 and nobody corresponds to it, a second interface part F2 automatically calls the registered destination device 22. When connection is executed with the destination device 22, the original calling device 21 and the destination device 22 are mutually and directly connected with the transmission lines L1 and L2, interface parts F1 and F2 and change-over parts C1 and C2. In case of communication completion, it is detected and a call is disconnected. |
