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Troubling In Gsm Module

Nitheesh kumar nitheeshkumar451@gmail.com India

Hardware: LPC2148 Running At 12MHz Software: Embedded C Using Keil Uvision 4

I insert SIM card in GSM module (SIM300). I called that number from mobile phone then it is saying the number is switched off.
How can the module work?

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Replies

R Avinash
2016-10-30 04:45:02
From where have you purchased the GSM module? What power supply you are using? How much voltage and current rating?

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