After talking with our provider, Mitel, it was suggested that there is an issue where if there is a port scanner that is multi-casting, such as IGMP, turned on then the phones with perceive this as an error. They will reboot to regain the signal. Look at your port packets in the dashboard. Multicast/Broadcast messages on ours are above 10 million a day. Just one suggest of many suggestions we have gotten to fight this thing.
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