With the V2 ATM cards, when the IPO powers on or reboots, or the Analog Trunk gets plugged into the trunk port, the system automatically runs an impedance match. It also puts the trunk out of service automatically when there is no voltage present.
This is a great feature, but I can see where it would trip your hotline phone after a reboot.
In Manager, go to the line, and then to the Analogue Options tab. You will see a box for Impedance Match, un-tic the box for Automatic and see if solves your issue.
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