Have a UC320 with a small network behind it. For 6 months we had a cable internet connection 3 Mbps down x 1 Mbps upload. Never had any issues with speed. Our business runs hundreds of credit cards per day. Recently, we switched to a 10x10 fiber conn...

We have a UC320W on the latest firmware, randomly when a caller gets auto-attendant and presses the extension they want, they receive a busy signal. It's hapenning very randomly, and not every time. I have rebooted system, checked the firmware is on ...