Please confirm the following:

1. Verify that the number is correctly dialed.
2. Send a fax to a known, local campus fax machine via both its internal extension (4 digits) and its full extension (7,1.570.xxx.xxx).
3. Speak with the fax receiver to confirm that their fax is working and that you have the correct number.
4. Try faxing a different external fax (not a CSU fax).
5. If none of these resolve the issue, submit a Helpdesk ticket Here.