I view nextiva as much more than a phone service since I've been using them for quite a while now. I had a few issues during the setup because my Internet with comcast is kinda odd but since working everything out, everything has been right. I should mention that it was their support that resolved the internet issue not comcast. I was expecting that the people in nextiva's support were going to tell me to contact comcast, but that was never the case. The call quality has sounded clear and my internet has not interfered with anything since setup.