Polycom VVX Hookswitch Mode setting reverts after the reboot which happens when this setting is saved(Settings, Basic, Preferences, Headset)
Firmware version 5.9.1.0615
- Polycom VVX 300
- Polycom VVX 301
- Polycom VVX 400
- Polycom VVX 410
Possibly affects other Polycom VVX devices also
As a workaround the firmware can be downgraded by 8x8 to an earlier version which is not affected.