trunk between an Elastix server and a Panasonic central

Hi to all ,
I have a Panasonic Central, model: kx-tes824 ,it has an urban line card and some extensions are defined on them. I run an Elastix server that on this server exists one OPENVOX card and two FXO modules.
I wana trunk between my elastix server and Panasonic central, but I don't know how can I do this and even don't know start from where????
Please help and guide me to do that, really really thank all of you

Hi , m.habili

Please contact me by MSN or Skype . I will help you to check it. The following are MSN and Skype information：

MSN：This email address is being protected from spambots. You need JavaScript enabled to view it.
Skype： upper.hua

Best regards