It happened again. I can call in and any extension works, but my ext 200, just doesn't ring. It was fine for a few months, then bam, one days stopped working. Didn't login and change anything, didn't update anything, just won't ring ext 200. I've deleted and recreated a new ring group, pointed the IVR to the new 700 ring group. All the other extensions ring, but 200. Not in DND, not setup for call forward. Driving me crazy. Anyone have any suggestions?