| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize the configuration where a relay line is efficiently used. SOLUTION: A subscriber data storage section 12 stores a voiced sound rate N of contained telephone sets 20a-1 to 20a-3, 20b-1 to 20b-3 as subscriber data of each telephone set. A control section 11 calculates a non-voice part compression rate of the telephone sets 20a-1 to 20a-3, 20b-1 to 20b-3, based on the voiced sound rate of the subscriber data to decide the assignment of the occupied band of an ATM relay line 5 of the telephone sets. A private branch of exchange main body 10 executes the exchange-processing between the telephone sets 20a-1 to 20a-3, 20b-1 to 20b-3 and the ATM relay line 5, based on the band assignment decided by the control section 11.</p> |
