Grandstream GXP1625 Freeze issues

[PanagiotisK]

We have a 3cx version 15.5.15502.6 installed and we are facing an issue with 4 Grandstream GXP1625 devices.
The devices have the latest firmware available from updates section of 3cx Web interface (1.0.4.125)
All 4 devices have experienced many freezes that are can only be resolved by hard rebooting the phones. We tried both with power supply and PoE and the issue persists.
The devices that are used most (two reception phones) seem to experience this freeze more frequently than the other less used devices. The vendor's reseller suggested there is a problem with 3cx and not the devices.
(we also have a yealink t27 phone and a w52 dect that are working as expected)
The suggested we factory reset the devices, update to the latest firmware from Grandstream (14.0.4.140) and manual register the accounts to 3cx to see if that fixes the issue.
Has anyone else experienced this problem?
Is there any known issues regarding 3cx default templates for this grandstream model?

 

[JohnS_3CX]

Hi @PanagiotisK

I would suggest to upgrade to the latest version of 3CX V16 which supports the newer firmware edition 1.0.4.132 for your specific model of phones. The older V15.5 PBX has not been tested with the newer firmware and will not be receiving the update (nor has it been tested for compatibility).

The later firmware has fixes to some of the crashes and freezes that the specific model faced according to the manufacturer's release notes. This is not a confirmed fix because we do not know the specific reason your devices are suffering from, but I reckon is worth trying. Please ensure to take a backup of your existing PBX first.