Many thanks for the suggestion, but the server comes back with the message, 
rpm -e hylafax
error: removing these packages would break dependencies:
        hylafax >= 4.1.5 is needed by dmc-mitel-hylafax-setup-4.1.5-1
So I tried your method with the dmc-mitel-hylafax-setup-4.1.5-1 on the end.  Then ran your recommendation.  Seems to have worked ! 
 
 Les K.