Hi maseline_98
Thank you for using the Xerox forum.
The user and administrator guides are available on the Xerox 7556 Support site
I would suggest that you review the Faxing section and setting defaults in the following to determine if these could provide a solution.
User Guide - WorkCentre 7500 Series or System Administrator Guide
If that does not resolve your issue you may consider contacting our specific product support experts at the following link:
Fast Track to the Expert
Is there a way to bypass the fax number dialog box that pops up when you 'Print to Fax'. I'm trying to programmically populate the fax number with the data from our database without and send out the fax without the user having to anything else.