If a fax has the Submitted status, this can mean that either a fax is being sent but not yet processed, or that it has already sent and is currently being processed on the other side.
When a fax is submitted but not yet processed, that fax is still waiting to be prepared by the server.
Once a fax is submitted and processed, that fax has been successfully sent to the server and is waiting in the queue to be sent to the given recipient. Faxes that have been submitted and processed will show the number of fax pages beneath their status.
You can find submitted faxes either in the All faxes or Sent page via the Phone menu. When you hover your mouse over a submitted fax, a series of icons will appear at far right that you can select to perform one of the following actions: