The setup is as follows: Hitron Cable modem (power via outlet) <-> GWN700) (POE) <-> Netgear ProSafe POE Switch (power via outlet) <-> UCM6204 (POE).
When the power failed, everything goes down (even with UPS it will go down due to outage duration).
When power is restored everything will boot up. Everything connects. However, the VoIP trunks do not re-register.
Everything else works as expected.
Port xxxx for SIP is open from the ITSP’s IP to the UCM.
How can I get the system to restore without further human intervention?