I am using SIM868 module. I am able to get GPS message and also able to read messages of SIM. Previously I was using SIM800A and I was able to make call to the sim interfaced with SIM800A.
But here with SIM868 I am not able to make call. I transmitted some commands using PIC microcontroller.
These are its outputs
And last 2 lines are keep on repeating. What is wrong?