I successfully configured a sip account that uses my googlevoice account for incoming and outgoing calling.

I used a free service from sipbri.com to do this.

I can make and receive calls on my N9 using GoogleVoice just like a cellular call. The quality on my N9 end is perfect.

The voice quality at the other end is not that great.

Anybody else successfully used GoogleVoice with N9? Any other provider that may give better voice quality?

This is important because T-Mobile (US) service at my office is not that great and I want to pick up the call on wireless. T-Mobile Android phones provide Wifi-calling, but N9 does not.

I configured to forward to GoogleVoice number when I am not available and it works great. It is really great if we can resolve the quality issue.