Suddenly, I am unable to receive any incoming calls. What is the cause?
The inability to receive inbound calls is directly related to the IAD’s ability to register with our proxy server. If the IAD is not registered, our network will be unable to route calls to the IAD. Some of the possible causes are: • Power outages • Loss of Internet connectivity • Router/firewall security options blocking Digital Voice Travel traffic If this problem occurs, please verify that you have Internet connectivity and check your router/firewall security settings. Next, reboot the IAD by unplugging the power cord for 15 seconds, and then plug it back in. This will initiate a new registration request. Wait 5 minutes for the device to completely boot up, before attempting to make a call.