Background stops playing after sometime

Im at a lost here, I am using a dialer to connect to my dialplan, which is basically just a press 1 campaign.

The problem is when the Background message can’t be heard all of a sudden. I don’t have any clue on where to start troubleshooting, I tried to check bandwidth and everything is ok. This happens very randomly so, any clue on where to start would be much appreciated.

Thanks