Help required to connect to cisco 7906 to freepbx

Please help me to connect to cisco 7906 to freepbx.

The phone already loaded sip from the cisco call manager
Thank you

I think you will find, whenever the phone boots, it will attempt to pull the load from the freepbx server. You will need the load on your server, within a tftp or ftp directory. Ultimately you will need to be running an TFTP server to load the phones, I also believe using Cisco callmanager will not help you, each phone has to be configured from configuration files within this TFTP directory.
Saying this, I know nothing about this phone, I mainly deal with 7960 and up. I would seek advice and read documentation on the Cisco website related to that phone.

Sorry I can’t be much more help than that.