interfacing APR33a3 & gsm808

Hello guys

I am working on IVRS based gsm controlled electric motor. For that, I am using Arduino, GSM808, DTMF & APR33a3. Interfacing of gsm to Arduino is good but don't know how to interface apr33a3 to gsm for the response of recording stored in APR33a3 & play when the call is received. So please help me if anyone knows about that.

Thank you.