I purchased a refurbished Ooma Telo the last time it was sold on Woot.com. It is a fantastic device! Porting our home number from Cincinatti Bell took about 2 weeks. Ooma contacted them within three business days after we filed for the port, and they gave us a notification to call Cincinatti Bell to authorize the transfer. We then had to contact Ooma back to let them know that we had contacted our phone service provider. Ooma attempted to port our number on the weekend, 5 days after we asked for the port. However, Cincinatti Bell wasn't ready yet. The next weekend, our phone service was out for about 6 hours, and then, voila! All calls to the home phone number now rang the phones hooked through Ooma. It cost $40 as advertised.
Also, in case anyone wondered, calls through the Ooma Telo hooked into our same telephone units sounded much clearer and louder than when we were using Cincinatti Bell. International calls to Japan have been crystal clear, even when they last over three hours.
We chose to use the wireless Uniden DECT 6.0 handsets in conjunction with the Ooma. These work great with the Ooma. For example, if we have voicemail on the Ooma, the light on the Uniden phones (even the ones that aren't hooked straight into the Ooma Telo) will blink to indicate that we have missed calls. The biggest downside to the Uniden sets are that the standalone handsets (the ones that sync to the main base unit) have an extremely quiet and high-pitched ringtone. Older people in your household may not be able to hear the rings.
I also purchased the Wireless USB Stick for the Ooma Telo, which was released just this month (October, 2011). It's fantastic! We no longer need to keep our Ooma Telo next to the modem & router. The Ooma Telo can now be moved anywhere in the house where our router's WiFi signal reaches. My Ooma sits about 20 meters away from our router (802.11N), and we still have the same crisp and clear call quality as if it were plugged straight into the modem. Even with a wall and a set of bookcases between the router and the Ooma, other computers nearby, cellphones in the other hand and the microwave running, nothing seems to disturb the call quality. The Wireless USB Stick is a fantastic addition to the Ooma.
Each monthly bill in my area comes out to $3.45. Great bargain compared to $29/month we were paying for just a POTS landline.
So here are the negatives. The great features like text notifications for voicemail and the automatic text transcribing & MP3 voicemail forwarding to e-mails cost a lot of extra money in comparison to the monthly fee. There was also an outage that lasted an entire day recently. The speaker in the Ooma Telo that plays back your voicemail is pretty weak (quiet). The blue light on the USB Stick is pretty bright (but you can turn down or even turn off the LED lighting on the actual Ooma Telo; just not on the optional Wireless USB stick). Three times out of the past few months, our Ooma dropped calls.
Since I purchased it refurbished, I expected a few things to go wrong. However, other than the three dropped calls out of about a hundred, the Ooma has never froze, crashed or overheated. It's functioned perfectly!
I'm OkinawanMatt, and I wholeheartedly endorse this product.