I forward incoming calls to external numbers. I do this with Follow me module for each number. Sometimes I use one more external number in follow-me list, to call the second ona if the first one is busy. Bu it is calling the first one and ringing. First one is busy and it is still ringing. I does not call the second number.
What i am doing wrong?
Your provider or ATA not recognize busy signal. Unfortanly no way say what exactly happens, info provided not enought