Step 1: Go to the TMS URL: 

Step 2: Choose the correct account

Step 3: Click on the Extension Manager Menu Item.

Step 4: Click on the Extension sub-menu item.

Step 5: Select the correct extension.

Step 6: Click on the Details tab at the top.

Step 7.: Click on the Sip Password “Send Password” button.

Step 8: Click on the “Send Auth Key” Button to view the SIP Password. (This will be sent to the email address in the “Administrator Email” line.

Step 9:  Paste the Authorization Key in the Authorization Key field and click “Show Password.