| 摘要 |
PURPOSE:To receive immediately plural emergency calls and to call back a calling mobile subscriber terminal equipment when the plural emergency calls take place simultaneously on a sea. CONSTITUTION:An electronic exchange 3 receives an emergency call called from a mobile subscriber terminal equipment 1 through a radio line. The electronic exchange 3 selects and acquires a trunk 4 corresponding to the emergency call and reaches the emergency call to any of attendant boards installed to the competent authorities 11. A printer 9 installed in the competent authorities 11 prints out a number of the mobile subscriber terminal equipment 1 sent via a transmission controller 5 and MODEMs 6, 8. |
