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The handset detects local technical faults or keep-alive requests. These are signaled to the user. Example:

• The handset is out of DECT range (0-120 minutes)
• Battery charge level is too low
• Keepalive is not answered by the server (0-120 minutes) (Only for Alarm and PNG mode as Basic mode works without an Alarm server)

The user can subsequently initiate measures in order to resolve the fault.

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The handset will send every ... minute an 0-120 minutes (configurable) a keepalive message to the server where the server needs to respond, this will acknowledge that:

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If the server starts answering the Keepalive again, the alarm message will be deleted.

If the handset is in "pause" mode, the keepalive is also paused.

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