I have been using Ooma for about 3 years. In our VA home, TV home and two rental homes. It was good but would have a bit of static or an occasional loss of a word. Then I found out about QoS. Follow these instructions and the quality of voice, connection and the entire service improved dramatically. Got two homes done and will do the rentals soon.
Learning more about Ooma Quality of Service (QoS) | Ooma