SIM900a Modem IMEI 0, Help with TX RX

Other Hardware 3rd Party Boards
1

Hello
I have Simcom SIM900a GSM (SIM900 (SIM900A) Mini DEV Board) and I am interfacing it with Arduino UNO.
I have no idea how to connect SIM900a to Arduino UNO.

What I did now is:

932×837 661 KB

I connect the following Pin from Image to:

1 to: GND (Digital GND near Pin 13)
2 to: Digital Pin 2 of Arduino
3 to: Digital Pin 1 of Arduino
4 to: GND of Arduino near 5V
5 to: 5V of Arduio

Can you please guide me am I doing right?
I am getting hard time to find out what is TX and RX in my SIM900a module as it is not written there.

My SIM900a looks like this:

http://www.electrodragon.com/product/sim900a-mini-dev-board/

When I upload sketch of:
Example > GSM > TestModem:

I got this output from Serial Monitor:
Starting modem test...ERROR, no modem answer.
Checking IMEI...Modem's IMEI: 0
Resseting Modem... Modem is functioning properly: IMEI: 0

Sim900 Problem.png
Sim900 Problem.png932×837 661 KB

2

For anyone looking for guideline, here is this question answered:

It says Pin should be:

.
SIM900A - Arduino

VCC - VDC (+5V)
GND - GND
5VR - Connect to Arduino TX (Pin 3)
5VT - Connect to Arduino RX (Pin 2)