Asterisk Phonebook

I have entered several hundred names and numbers into the Asterisk Phonebook for Speed Dials. I can manually dial my speed dial number and the calls go through fine.

What are the steps that I need to take to make the list accessible to my Polycom Soundpoint IP phones? There’s a button on the Polycom phone called directories so I’m thinking we should be able to program the system so that when someone presses that button, they can then access the Asterisk Phonebook on the PBX server. Thanks for your help.