Hi:
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The device's PHONE port status page doesn't display any information.
What do you mean, exactly? Do you mean that there are no voltages displayed, or the page is blank, or what?
When the attached phone is on-hook, the page should look like the screenshot below. What does yours say?
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...and connecting a phone directly to the PHONE port...
Do you mean that you formerly had it attached to your house's telephone wiring? You also mentioned a dead OBi 110. Do you realize that attaching the OBi to the house wiring can damage the phone port, if you have not completely disconnected the two telephone wires coming into your premises from the telephone company?