The TSM for Avaya Definity G3 has a timeout facility that allows it to disconnect from the socket if it fails to receive the next alarm data within a predefined amount of time.
You can specify how long the probe waits before disconnecting using the Inactivity property. After this length of time, the probe disconnects from the device, sends a ProbeWatch message to the ObjectServer, and tries to reconnect. You can also use the InactivityRetry property to specify the number of consecutive inactivity intervals the probe waits before disconnecting. If this property is set to 0, the probe disconnects after a single period of inactivity.