| 摘要 |
PROBLEM TO BE SOLVED: To efficiently utilize a terminal standing by until a line becomes vacant and a line.SOLUTION: The call origination control device, when, even though a call origination request is received from a call origination source telephone set, no vacant line is available because another telephone set is using the line, makes the call origination source telephone set stand by in a state of requesting call origination to the call origination source telephone set, holds the call origination, and performs the call origination when a line becomes vacant after the usage of the line by the other telephone set is completed.SELECTED DRAWING: Figure 1 |
