| 摘要 |
An automatic incoming telephone call sequencing system is disclosed for use with multiple incoming line key telephone instruments. The sequencing system includes a scanner for scanning all of the incoming lines and detecting the arrival of an incoming call on each of the lines, an identifier for identifying each of the lines following detected by the scanner of an unanswered call thereon, a queue memory for storing in the order of receipt all of the coded line signals from the identifier and providing an output queue signal corresponding to the line having the oldest unanswered call, a signaller for providing a key of the key telephone instrument with a distinct visual indication from the output queue signal, and an operator interrupt detector for detecting the operator's answer of the line having the oldest unanswered call and for thereupon advancing the queue memory to the next oldest call whereupon the signaller provides the distinct visual indication to the key corresponding to the next oldest unanswered incoming call, etc. Automatic announcement equipment may also be incorporated to explain the answering procedure to the calling parties.
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