| 摘要 |
PURPOSE:To simplify a callback operation accurately and quickly by transmitting a signal while its own station information is added, storing the information transmitted from a sender station to a memory at an incoming station, extracting the stored information in the memory and transmitting it to a callback request due to absence of a talking destination. CONSTITUTION:When a subscriber NA1 of a station A makes a call to a subscriber NB11 of a station B, the station A adds the station number of the station A and extension number information of the NA1 to a signal and transmits it to the station B via a sender information transmitter SND2. An incoming information receiver REG17 of the station B receives the information transmitted from the SND2 of the station A, rewrites it on number information of the NB1 and stores the sender station information in a memory corresponding to the said line. If a called party to the subscriber of the NA1 is absent and when a callback is requested to the subscriber of the NB11, the operator of the NB11 applies a special operation and the sender station information stored in the memory is transferred to the storage section corresponding to the subscriber. |
