| 摘要 |
PURPOSE:To improve the extension on a function by providing a code call memory in the main storage circuit of a private branch of automatic exchange to simplify the code call system. CONSTITUTION:A dial signal is received by a code call circuit 14 connected to the private branch of automatic exchange 12, a display light corresponding to the received numeral is lighted and an audible tone is generated. The dial signal of a subscriber is relayed to the circuit 14 by a paging trunk 175 of a trunk circuit section 17 under the control of a central control circuit 20. A main storage circuit 21 is connected to the said control circuit 20, a code call memory 211 is provided to the storage circuit 21 to store dial code information to be received. Only when a prescribed response code is dialed and also an individual number is dialed, they are regarded as response and a caller is searched from the memory 211, or the caller is found out conversely and responded to thereby simplifying the system constitution. |
