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  1. princez

    Problems with sending SMS messages with sim300 modem using AT commands

    hay, i am using sim300 and i am also getting the same error. actually i am trying to send sms with gprs link. following is the command sequence i am following. AT+AGATT=1 AT+CGSMS=0 after this i wait for a while and then send the sms sending command. AT+CMGS="mob num" >message then ctrl z...
  2. princez

    What's the reason of +CMS ERROR: 515 ?

    hay, i am using sim300 and i am also getting the same error. actually i am trying to send sms with gprs link. following is the command sequence i am following. AT+AGATT=1 AT+CGSMS=0 AT+CMGS="mob num" >message then ctrl z +CMS Error 515 whats going on wrong?? please help.

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