Organization Phone # Look Up

Content

Hi - 

I am importing a large list of organizations over that could have multiple phone numbers tied to one org. I have created custom fields for these (ex: ph, alt_ph1, alt_ph2, etc.).  I need a way for agents to be able search for an organization by a phone number and it will look for a match in any of the phone fields to show a result.

I'm super stumped - any thoughts around the best way to do this? What expression should I use for that filter? 

Version

18b