Ok, many systems work that way. Never saw it called pre-ring.

I think you ruled out any anomaly on the CO lines. Even more puzzling is the 6AM to 6PM thing. Wonder if it's crosstalk from other ringing lines owned by another company that conducts business during those hours?

Then too, you have to remember what you are dealing with- IP Office. That's the next place I would look.

-Hal

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