Apparently Grandstream does not have any solution to replace the damaged lens cover of a GDS3710 or GDS3712.
It is extremely likely that the lens cover will degrade over time or just be scratched by accident by any guests entering the facility or just passing by.
We have confirmed that replacing the glass cover requires to fully disassemble the GDS, so this means it has to be done by someone who is specialized, or just very careful.
This is bad by design, which should have some kind of easier way to perform this maintenance.
Regardless the alternative solution might be to just polish the lens cover, to reduce the impact of the scratch, but this is not a procedure that can be done blindly.
Has anyone had any success in polishing after a scratch?
Grandstream could provide what kind of polish, and which product is more adequate, so that the procedure can be done on the site without the need to remove the GDS from the site…