I recently moved from an Asterisk box to 3cx and now all of a sudden all of my phones crackle and Echo at certain points throughout a call. It seems to be the first few words of any sentence this happens to. I have 3cx v10 SP5 and it is connected to a Grandstream 4108 8 FXO gateway. I am not sure the problem is in 3CX or the GS FXO GW but hoping someone might have an idea. I am new to the VoIP space so might be missing some easy signs to the problem and how to fix it. Any ideas? Thanks.