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You are here: Home / Replies / GSM 900A not calling

GSM 900A not calling

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Electronics › Electronics › Problem with GSM SIM900 module › GSM 900A not calling

September 1, 2016 at 4:43 pm #14126
S.Sriramkumar
Participant

i have a gsm 900a module…the modem is working properly because while i call the mobile which is used in the modem…i could hear a ring back sound….while i try to call it throuh the arduino….the at commands are sending…but the modem doesn't make the call…

 

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