how to connect bsnl 3g data card

I am new to free bsd FreeBSD. I have just bought a 3g data card. It's working fine in Windows and Ubuntu because installation is easy. But I am still surprised to how to connect it in free bsd FreeBSD. My card manufacturing company is Teracom. My service provider is BSNL of Chattisgarh (India). APN is "bsnlnet". DNS is 219.248.255.154 and 61.1.96.71. Can somebody help me? Please help me step by step configuration.
 
What do you mean by u3g(4)? I can load this via the following command.
# kldload u3g
Please, I am new. Refer the whole process.
 
I tried to set the ppp command but the following result find:-
Code:
ppp
set device ttyU0
set speed 115200
enable dns
term
at
OK
atdt12345
CARRIER NOT FOUND
 
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