| 摘要 |
When a device alarm is raised in a signal processing unit 104 of a gateway apparatus 100 , a transmit CH-AIS data generating unit 109 generates CH-AIS data including alarm information provided on a trunk-channel by trunk-channel basis, a packet assembling unit 105 packetizes the generated CH-AIS data into CH-AIS packets and transmits them to another gateway apparatus 100 which is disposed opposite to the gateway apparatus 100 . The other gateway apparatus 100 then analyzes the CH-AIS packets received thereby by using a received CH-AIS data analysis unit 110 , and notifies AIS provided on a trunk-channel by trunk-channel basis to an exchange thereof via an AIS trunk output unit 101.
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