Thanks Jeff, I read the post but I have another problem.
I set Interface to CTR4 and FirmwareFile to spfax.fwl but the DCM does not start. when I change FirmwareFile to Default it starts.
I found this post https://www.dialogic.com/den/developer_forums/f/7/p/1174/4170.aspx#4170
If this is correct then I can't have 60 Voice Channels and use fax feature with this board only.
please let me know if this is correct.