If certain features aren’t available, or don’t work on an extension, it could be restricted in the assigned Class of Service (COS).
1. Log into the MN3300 programming.
2. Click on System Administration Tool.
3. Select System Options.
4. Select the Station Service Assignment form.
5. Find the COS number for the extension in question.
6. Select the Class of Service Options Assignment form.
7. Highlight the COS number.
8. To see what is permitted, click on the blue change button on the right hand side.
Making any change in the COS Options Assignment form will affect every extension that has that particular COS number.