Provisioning the phone is similar to the Linksys SPA phones. If you've ever had to provision a SPA-94x, the web interface to the Cisco branded phone will look and operate in a similar manner.
Works exactly as expected; Excellent sound quality, VERY loud amplification when using a headset or Bluetooth; High quality look and feel; No echo (thus far) like that experienced with the lower end Linksys SPA-941 phones
It's much more expensive than the Linksys brand of SPAxxx phones; but in the end it's proven to be worth the cost