NOTE: The follow following instructions MUST be completed from a CSC Cisco VOIP phone; any CSC VOIP phone will work.
- Press the voicemail key on the phone.
- From the Sign In screen, change the Extension to 7654967891 and enter 12345 as the PIN. Press the Sign in button.
- Once logged into the mailbox, highlight the message that you want to delete and press the Delete button.
- Delete all message until the mailbox is clear.