Sim 800l not working, led blinks 7 times then pauses

#1

Hi All , I am new to gsm and arduino module, Please help, my module is giving the following response.

i/p-> AT
o/p-> OK

i/p-> AT+CPIN?
o/p-> CPIN: READY
OK

i/p->ATD9482293917;
o/p-> ERROR

RDY

+CFUN: 1

+CPIN: READY

#2

Your device not getting enough current. Make sure it gets stable 4V 2A . Keep power line length short.

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#3

power related issue, check your power source, try to use a 3.7v lithium battery. if your source cannot provide surge current as well as regular current it will always create problems.

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