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sim900a with 8051

Discussion in 'GSM' started by tech.pacific85, Jan 28, 2015.

  1. tech.pacific85

    tech.pacific85 New Member

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    hello friends....

    i have one question that when we interface sim900a gsm modem to 8051 controller then if we call to modem with some mobile phone how to hang up the incoming call via 8051 and also how can controller know that there is a incoming call at gsm modem ???

    actually my application is when somebody calls to gsm modem , 8051 can get some signal from gsm modem and then 8051 can end the call with ATH command. my application need is ,i want to switch on relay when someone calls to gsm modem.

    may be my explanation is not so good so good.

    please help me.
    A.NAVEEN NUCLEONS likes this.
  2. Binu

    Binu Administrator

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    Do you want to switch on for every call or just to a specific number.?
    How much you have done, have you designed the circuit?
    A.NAVEEN NUCLEONS likes this.
  3. 123ravi

    123ravi New Member

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    Just enabel an interrupt There when u get a call . And i have already tryed it and got o/p.
    A.NAVEEN NUCLEONS likes this.
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