[SOLVED] SIM900 initiation sequence

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misnomerfrenzy

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Hello,

This is my first time of working on GSM.

I have got a kit of SIM900A interfaced with ARM7.

To begin with, I am facing following problems...

1. I cant insert the sim card in the slot.
When I try to lock, the sim card oozes out of the slot.

2. I can just see the power on LED on of the SIM900 module at power on. The other LEDs like netlight and status are off completely.

3. I dont have the datasheet of the SIM900A module. Even I tried a lot on google, I could not find it.
(So, I dont know the exact initiation sequence at power on for the SIM900A)

Kindly help me resolving my problems.
 

search it as at commands. it's used in that communication through uart communication.
 

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