Did you take those screenshots while nothing at all - no telephone cords was plugged into the OBi's phone jack? If not, unplug the power cord and the phone cord from the OBl (leaving the Ethernet cable connected), then plug in just the power cord and wait for it to boot up. Check the voltage/current again. If it's blank, then the telephone interface chip in the OBi is fried, and it's time for a new one.
It's not likely to solve the problem, but, if you have another 12V 1A (or higher current) AC/DC adapter, you can try swapping it out.