Aiphone IX-MV Setting Manual page 231

Point
 No group is registered in the default settings.
 Register up to 50 groups for each Master Station.
 When choosing "M," configure "2.4. Multicast Address"
 Group Name (furigana) is only accessible when using Japanese or Chinese language.
Important Impo ant
"Shared Group" registration should be completed prior to individual Master Station group
registration. If a "Shared Group" is configured using the same group number as a Master
Station individual group, the individual group setting will be overwritten.
System Settings (Settings (Station View))
231
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P.210.