Hi,
The Alarm Phone Notification configured with a Grandstream HT813 doesn't work anymore, probably due to a Widnwos 11 update.
The server and the VoIP gateway are under the same subnet and the firewall on the server is down.
When testing a phone pipeline the log display errors like "Network is unreacheable: Datagram send failed", "input/output error" and as you can see in the screenshot of the log.
I saw this response by @pturmel Ignition VOIP Voice Notificaiton Profile- Not Registering - #2 by pturmel that hints that the problem is in the net and in the OS.
I'm not a good network technician, is there anything I should try on the server or suggest to my client network technitian to try?
Thank you
Daniele