Kerry Garrison of 888voipstore made this video which walks you through the process of provisioning Cisco SPA 500 series ip phones with 3CX. During this tutorial, you will see how to use provisioning within 3CX, how to manually configure an ip phone, how to do semi-automatic provisioning, and fully automatic provisioning using DHCP option 66. As a companion to this video you can review the Cisco SPA 501G, 502G, 504G, 508G, 509G, 525G configuration guide. A guide for ‘manual’ configuration of the Cisco SPA 501,502, 504, 508 and 525 ip phones can be found here