| 摘要 |
PURPOSE:To ensure the separation between the incoming call which really needs the call pickup and other calls in case no answer is given from the extension telephone which received the incoming, by enabling the answer of other extension telephone in a fixed time after the incoming. CONSTITUTION:For the electronic exchange of the stored program system, processor CC is started at all times and repetitively by the clock sent from clock signal generator CK and in a fixed cycle. With use of this clock, the value of the incoming trunk of memory PM is counted up in case extension A receives the incoming to be memorized in the form of the answer delay time. When the answer delay time exceeds the fixed allowance time, the call is switched to another extension. |
