Review on 📞 Grandstream GXP2130 Enterprise IP Telephone with 2.8" LCD, POE, Power Supply Included - Black by Sean Skinner

Works great with PBX Freeswitch and Fusion. I recommend that those using this at home ensure the following: Make sure you reserve an IP address for the device by MAC ID. - Allow all outgoing requests with a reserved IP address. - If possible, configure traffic priority for IP and rate control to ensure that other media services (Pandora, Netflix, Gaming, etc.) do not affect the quality. - Set up remote device provisioning, very useful for updating and transferring settings from FusionPBX to SIP phone. - On a remote server: Check your firewall rules and the Fail2Ban service that comes with FusionPBX during installation. Firewall rules on the remote server. I restarted the device and updated the firmware to the latest version to fix the persistent issues. Deploying a new PBX server eventually solved my problems. Hope this helps others.