BroadVoice and Teliax connection not registering

I have setup asterisk server with latest version of asterisk (1.2.13) on centos 4.4. After installing freepbx I have configured the broadvoice and teliax trunk , but it is not registering with their server. Results showing Timeout values . Is anybody can help me to solve this problem . I have successfully able to register these connection in other centos 4.4 (Trixbox).