I 've had ooma since last November, and after some initial latency issues were cleared up, there have been no problems. But starting in July, I was told by two people that they had tried to call me, but "there was no way to leave a message".
This past Tuesday, I called my home phone number from my work location to check what is heard. There was no ringing sound, no personal greeting played, just several seconds of silence with a little static, and then a busy signal. After reading the related topics here on this forum, I did the hard reset of the ooma hub.
Today I called ooma customer support from a pay phone, explained my problem, and asked if they would call my number and tell me what they heard. The CSR was able to hear my personal greeting and leave a message, but he pointed out that he was using an ooma phone.
After I spoke with him, I called my home phone number again (from the pay phone), but got no ringing, no greeting, just silence followed by busy signal. When I got home, the "Play" tab on the ooma hub was not blinking red to indicate that a message was received. But ooma had sent me an email notifying me of the CSR's incoming call (voice mail), and, when I pressed the "Play" tab, the test message from the CSR did play.
I'm wondering if the ooma CSR was successful in calling my number because he was using an ooma phone, while I and other people trying to call my home number are for some reason unsuccessful because we are using phones that are not within the ooma system. (I don't know why the "Play" button wasn't blinking red to show that his message was on the machine.)
On the ooma forum I read that some people having a similar problem eventually found out that they accidentally had the "Do Not Disturb" feature on, and didn't know it. But this feature cannot even be enabled on my hub because "Do Not Disturb" and "Message Screening" are now only available with ooma premiere service, which I do not have because I use the telephone very infrequently.
The CSR did note my problem in my file, and suggested that I call back in a few days if I found that there was still a problem. But it looks like the CSRs won't be able to discover this particular problem as long as they call my number using ooma system phones.
I also read in the forum that similar problems were due to ooma's "partner" phone companies in certain areas. I am in the 860 calling area (Connecticut). Thanks in advance for any advice.