Blocking a phone number on the Shoretel phone

To block a phone number, you have to set it up for each user. Here are the steps: 
Log into the portal https://portal.shoretelsky.com

1. Go to Phone System > Users > Right-Click User > Click Phone Settings
2. Go to the Call Routing tab > Checkbox for Enable Call Screening must be on
3. Click on "+ Add" > Ensure "Callers matching certain conditions" is selected
4. From the drop-down menu, choose Caller ID matches and enter {10-digit number} > Then "+ Add"
5. Click Next > From the drop-down menu for Call screening action to be applied:, choose Hang up the call
6. Click Finish