This page has tips for the End Point Manager (Commercial) module.

Associating a phone key to toggle "Follow Me" and also light the key LED to show current Follow Me status

The simplest way to create a Follow Me toggle key is to assign a key to dial *21, the normal Follow Me feature code. Asterisk will announce the new Follow Me status when the key is pressed. However, the key does not visually light to indicate if Follow Me is enabled or disabled. The procedure below will add this.

Enable custom device state feature codes

Assign a BLF (busy lamp field) key to the desired Follow Me hint feature code

Associating a phone key to toggle "Do Not Disturb" and also light the key LED to show current Do Not Disturb status

This procedure will use device state hints to enable a phone softkey to both toggle "Do Not Disturb" on or off but also indicate the current status of the setting with an LED light.

Enable custom device state feature codes

Assign a BLF (busy lamp field) key to the desired Do Not Disturb hint feature code

 

Characters in custom entries not provisioning on Grandstream

Some characters need to be encoded, so if adding to basefiles please replace the following:
+    =    %2B
%   =    %25
=    =    %3D
&    =    %26