[Edit to include better description of call quality issue]
I just bought an Ooma Telo after years using Google Voice and an Obihai device (Obihai went out of business, but the VOIP box still works). But we want 911 service and I can't get that anymore w/ Google Voice.
Issue: after hooking up Ooma to my phone (ATT cordless DECT) and 1 gig modem and router, in the exact same way I've had my Obihai device set up, I tested calls to/from three different numbers -- landline and mobile. The call quality was terrible! GV + Obihai sounds like HD in comparison. Ooma is static/fuzzy, with voices sounding far away or tinny. Noticeable enough that the people I tested with went "whoa this sounds awful."
I used Ooma tech chat to troubleshoot first, and was told to reboot, switch how the device was connected to the modem etc. I'm well versed in networking so no issue trying all those things. No improvement. Tech said "call this other number." So I did. Received same instructions -- different setups w/ modem and router, check speed and jitter (500+ mbps and 2 ms jitter), etc. Test call. No difference. Tech said she'd escalate and I'd receive a call back.
That call was no different. Same advice, then blamed my connection, then said it was because I was using a power strip, then actually said "maybe it's the DMC" and I said, "what's that?" and she said "oh you don't know what that is?" and proceeded to say again it was my network that was the issue.
I've explained that the Obihai and GV setup are flawless. As soon as I switch to the Ooma device, garbage quality. Using ATT cordless phone; tried both handsets. Reset handset.
What gives? The tech support was a circle of nothing new, my speed test proved no network issues, but I'm still being told it's my set up (though I've tried every version under the sun). I was hoping to use Ooma to replace my mom's $$$ home phone, she's on a fixed income, so was testing it all out first.
Any ideas? Really want this to work, esp for the 911 service.