I have a few non-managed phones (Grandstream DP750/DP720 cordless) configured as workstations. Everything I need to work on these is working nicely. Only thing I'm trying to address is voicemail access from the phone itself. I can program a voicemail number/extension on these devices but I do not currently set the "Message Button" option in Server Config/Telephony Parameters/SIP as managed stations do not need this set for the messages button to call into the VM system. So I have no "VM extension".
Only two things I came come up with are setting an extension for "Message Button" or defining a profile in Attendant that goes straight to Remote Access, and playing a greeting that says "enter extension and password".
Do I have any other options? If not, would it be "bad" to define the "Message Button" given 97% of my devices are Polycom managed stations?
Running 2018 R1 in case it matters.