ionut
Basic Certified
- Joined
- Sep 19, 2017
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When you factory reset a Fanvil phone the default time server values are "time.nist.gov" and "pool.ntp.org". If the phone cannot contact those either because they are blocked by the firewall or because the DNS is not resolving correctly then the phone cannot validate the validity of the certificate and provisioning will fail. If you use your own time server then you need to apply the settings into the phone and then try to provision.
Thank you. Yes, the environment is isolated, the IPs aren't NATed.