To access XMedius Fax you can click HERE. This app is a single sign on(SSO) to the TSTC Portal, so this should direct you to the Portal log in page.
If you are having problems logging in click HERE for assistance.
Once you log in you should see your dashboard
Click on Compose Fax
Enter the Recipient and Cover Sheet information.
Click Browse to attach a file that you want to fax.
Once you are ready to send the fax click Preview to view the cover sheet and fax. If everything looks correct, Submit to send.