Hello mwholderby,
Since your MF5950dw doesn't appear to be dialing, we will need some more information about your setup. Could you answer a few questions?
(1) What type of telephone line do you have, DSL, Voice Over IP (VoIP), Magic Jack, or a plain old telephone line?
(2) Does the telephone line come directly from the telephone wall jack and go into the bottom port on the back right side of your MF5950dw?
(3) Is your MF5950dw connected to a dedicated fax line or are you sharing the line with voice calls?
(4) When you press the FAX button then the HOOK button on your MF5950dw, do you hear a dial tone? (Press the STOP button to release the HOOK button.)
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