| 摘要 |
In a communication network including a relay apparatus and a call control apparatus, a telephone conversation resumption system includes: a reservation unit, when a judgment unit detects communication impossibility between a portable terminal and the relay apparatus, records terminal identification data that specifies the portable terminal and an other-end terminal in a recording unit; a continuation processing unit that generates a call with the other-end terminal indicated by the terminal identification data and transmits a message to the other-end terminal; and a resumption unit that, when the judgment unit detects recovery of the communication state of the portable terminal, requests the call control apparatus to resume the telephone conversation between the portable terminal and the other-end terminal using the terminal identification data. With this configuration, even when the portable terminal becomes impossible to communicate, the telephone conversation resumption system can resume a telephone conversation easily.
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