Now I know we are talking about a higher acceptable price bracket ... I have seen these passive Ethernet fail-over devices. They have an Ethernet in, and two Ethernet's out. The phone would plug into the "in". The out's plug into separate switches. As long as the device gets a link from out1, it uses that otherwise it passively fails over to out2. I have never used such gear myself, but a quick Google found this option: 1+1 Ethernet Failover / Ethernet AB Fallback Equipment | Valiant Personally if it was me, I think I would be tempted to look at something like a Cisco Catalyst C9404R. Cisco Catalyst 9400 Series Switch Data Sheet - Cisco It has dual supervisors, dual everything. If you have a supervisor fail, the port automatically fails over to the standby supervisor. It supports doing hitless upgrades.
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