So far I'm impressed. Not quite landline quality, mostly from my end I think.
A few people have mentioned I sound scratchy, or break up at times while everyone else sounds great. Calls directly from the hub seem to work best.
I have mediocre speed on my cable internet (3Megs down, 256K up), but I changed the QOS down to about 80% of my upload speed, and seems to work! Our city has a fibre optic system they put in a few years ago that they sell cable TV and internet through, and that could be the difference. (Click! Network)
When I do the test at WhichVOIP.com I get excellent results. Very little jitter, no packet loss and very little delay. All the buttons come up green with a 99% QOS, and a MOS of 4.
So I feel pretty lucky about that after reading some of the issues on this forum!
Anyway, can't wait to cut the cord to the monopoly phone co. and hope that Ooma stays in business for a long time!
It does a really good job of the measurables and will be recommending that site.
So many threads are on connection measurables. Specifically, I think the QoS has a lot to do with it, and to properly set the engine to the right speed. I know my QoS greatly improved when I changed the uplink speed, from 384 (what I had it before OOMA) to 256 (after configuring everything). Mine went from 18% to 99%. Wow!
AT&T DSL 1.5Mbps/384Kbps
QoS set to 256Kbps
Down: 1.31 Mbps
Up: 213 Kbps
packet loss: 0.0%
Core - gave to sister April 2010
Lifetime Premier Member