| 摘要 |
PURPOSE:To reduce traffic intensity and to attain efficient communication by storing respectively a data and its address and transmitting simultaneously the stored data and a call divided by a filter when the address of the call produced in a fixed time is coincident with the stored address. CONSTITUTION:In transmitting a data through the use of a telephone line, a transmission destination address and a transmission time limit are written at the beginning of the data and the result is fed to a PBX4a. The PBX4a receives it via an MODEM9, stores the data in a storage means 10, the address to a storage means 11 and the time limit to a timer means 12 respectively tentatively. When a talking call is fed from a telephone set to the PBX4a in the time limit stored in the means 12 via a controller 7, a collating means 13 compares the address of the call signal with the address stored in the means 11 and when they are coincident, the data stored in the means 10 is fed via the MODEM14, and talking voice through a BPF5 is transmitted at the same time via the same telephone line. When no talking call of designated address exists in the set time limit, only the data is transmitted. |
