sim900 gsm/gprs module

Hardware Arduino GSM Shield
1

Hi.

I have a problem with sim900. I buy in this shop online SIM900 GSM/GPRS Module - DFRobot

I try to connect to arduino Uno board. but the module not response.

I have a question.

  1. I use J2 (5V, GND, TX, RX, and PowerUp pin) connect to Arduino Uno board. (5V, 0,1,9 Pin). I cant find why the a module not work.
  2. What library can I used.

Thanks for helps