| 摘要 |
PURPOSE:To efficiently execute calling action by sequentially calling plural predetermined opposite equipments, and determining the order of calling for the opposite equipments necessary to be re-called depending on what are the causes of call loss. CONSTITUTION:The callings to and the communications with the first through the n-th destinations are sequentially executed. The communication-end flags in call-control data for respective destinations are checked. In case the flags of all the destinations are set, the communication service is ended. About the destinations for which re-call-flags are held, if there is a destination for which the value of a timer is zero is searched sequentially. And, the call to and the communication with the destination for which a re-call-flag is held is continued until an end flag is set. In this case, the cause of a nonfulfilment of call is identified from the response information from respective opposite equipments. Depending on the identified cause, a re-call counter, re-call timer, etc. are set so that maximally suitable time interval of re-call and the number of times of calling, etc. are determined.
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