Goip Asterisk communication inbound phone number not getting

I am using goip1 with asterisk 11. I had configured the goip with the sip account 300 and inserted a SIM in the goip device, so when i make a call from a mobile number to the goip SIM number, i am getting 300 as the inbound phone number instead off .

How i can get as the inbound number. Is there anything i have to configure in goip to get the actual phone number.