I've tried to use B-ACD with FXO port and it seems working differently than with PRI. When I call in I can't hear welcome prompt and also script doesn't respond to any keypresses. After some time I hear the message "You've entered an invalid option, please try again. For sales press...". And after that I can press options to dial by extension or to reach the queue. With PRI port at the same router it works fine.
Does anybody have ideas why this happens?