Using OpenVPN on Grandstream ATAs with tls-crypt being a Static Key How to connect your Grandstream HT812(V2) ATA to your OpenVPN server instance even when you’ve secured the tunnel using a static tls-crypt key. Read more July 13, 2025 Categories:English, Others, TutorialsTags:Grandstream, HT812V2, OpenVPN, SIP, VoIP