Cracking Noise

Hi everyone! please can anyone tell me what the problem is here i’m using an asterisk on fredora with my sangoma cards with ATA530 Grandstream, now i notice when i call out of my network with my ATA the person i’m calling gets a cracking noise notin else while, at my end it goes silent. But i dont have this problem when i use xlite on to phones. Please does anyone have an idea what could be the problem

If you are unable to resolve it with the built-in utilities - you can always use commercial software for audio quality improvement. There are different options for noise reduction & echo cancellation that work well with Asterisk.