I too had almost no or limited issues over the weekend. Having said that I also don't sit at my desk with my BYOD device as much on the weekend. Starting this morning however I am back to having the same problems. In fact over the last 25 minutes my sip service has gone down numerous times. Still having no issues with another service provider on the same device. It seems to continue to be very random when the service fails but it does go to the "failover" solution during these outages.