I can not make a call from the softphone.
immediately after dialing the call completion.

[2014-12-13 14:36:06] ERROR[3751] phone_message.c: Unable to build dialplan routing - invalid license
[2014-12-13 14:36:06] WARNING[3751] res_digium_phone.c: No Valid DPMA License found. Module is loaded but disabled. Please reload module once valid license is installed.

I don’t think these error have any thing to do with your soft phone not working. The “No Valid DPMA License found.” is for the Digium phone module which would not have a bearing on the soft phone.

It would be helpful to have some version info. What soft phone are you using?