I noticed that I hadn't gotten any voicemails in a while so I tested my voicemail and when I called I would get a series of beeps instead of my voicemail.
I chatted with Google voice support and they thought it might be my obi devices. We removed them, re-added them and tested a bunch of combinations. It appeared to be intermitant.
I've tested it, quite extensively (3+ hours) and I think I found the cause.
Some background : I have Google Voice set up to forward calls to my Tmobile phone and also use GV for tmobile voicemail. I also have 3 obi devices.
I've had this setup for many years and never had a problem and regularly get voicemails. Does not matter if they called my GV number OR my cell. I made no changes to my setup.
What appears to be happening is that a phantom Obi device is showing up in my GV account. I have 3 obi devices so I didn't notice this before. When I remove all of them, GV works just fine. When I set my GV to do no disturb GV works fine. When I add the Obi devices back, GV works fine.
Then the problem reappears.
When the problem comes back, what appeared to be happening is when someone calls me - unless it goes right to voicemail - it rings for a while. When this happens, eventually the caller hears the beeping. I had suspected that it was ringing too long and the inbound call "gives up" and gets the beeping. I thought it was a loop where the caller tries my cell and then the cell does conditional calling to my GV number then that keeps ringing for a while and then the beeping. The same thing happens when someone calls my GV number because the phone rings on my GV (web, obi etc) and ALSO rings on my cell. If I don't pick up - I suspected - that tmobile's conditional calling kicks in and it goes into a loop.
To figure out the problem, I added another GV number and linked that ONLY to my cell. I put that GV number into do not disturb. As a result, when someone calls my cell and I don't pick up it goes to the new GV number and they get my voicemail.
I thought that solved the problem. Then it happened again, only when calling my GV number (the first one).
What I then realized was that after a little while, a "new" Obitalk device with another number appeared in my GV account. To be clear, I made no changes to my GV account and I also did not make any changes on the Obi side. However, whenever this phantom Obitalk device comes back into my GV account, the problem starts again. When I remove it, everything works fine.
I removed it last night, and it worked. This AM the problem started again and after 2 hours of testing, I realized that the phantom Obi device was on there. I removed it and all works well now.
No clue why this is happening. I suspect the phantom device will come back again, only because it came back last night.
Thank you for your help.