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Port 3478 UDP/TCP must be opened at least for the host stun.ucontactcloud.com
Port 8089 UDP/TCP must be opened at least for the host (ucontactinstance).ucontactcloud.com
Port 443 UDP/TCP must be opened at least for the host (ucontactinstance).ucontactcloud.com
Ports 10000-2000 UDP must be opened at least for the host (ucontactinstance).ucontactcloud.com
Access to the site http://cacerts.geotrust.com/GeoTrustRSACA2018.crt and redirector.gvt1.com/ must be enabled in order to allow browsers to validate uContact SSL certificate.
Enable access to the activator license site : us-central1-licenciator.cloudfunctions.net/api/servers/getLicence
Enable access to monitoring tool: monitor.ucontactcloud.com
Access to the following IP´s (104.197.204.63 , 74.125.134.127) used by google chrome.
Verify that SIP - ALG is not active on the local or border network devices.
Verify that IPS - detection is not active because it can cause VoIP packet discard and voice problemas (unespected call drops).
Domain *.github.com must be enable for system updates
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