The main server generates alarms when it no longer controls a gateway. The following is a partial list of the types of alarms the main server may generate:
A major alarm for every gateway no longer under the main server’s control.
A platform alarm if the main server failed because of a hardware issue.
A minor alarm if gateways are not registered to the main server.
The following is a partial list of the types of alarms generated by the survivable core server when it obtains control of a media gateway:
An alarm is generated when the survivable core server controls gateways and IP endpoints.
