voice packets the highest priority. Quality is great. There is occasionally a very slight lag in received calls, but it's because of Google Voice. I currently have my Google Voice number forwarding calls to my CallCentric number in the office. For whatever reason, this can cause a little bit of delay when you receive calls. I'm still in the experimenting stage and trying to find a provider that I'm going to stick with before I start giving out that number and cutting the Google Voice number out of the mix. I'm going to try Anveo for the office because I'm so impressed with it at home.