Call Rejected: congestion

Hi,
I'm using ViciDialNow for few months now.
All of a sudden this morning the agents making outbound calls are getting this message:
"Call Rejected" Congestion
Cause: 19 - No answer from user (user alerted)"
Help...please..

I'm using ViciDialNow for few months now.
All of a sudden this morning the agents making outbound calls are getting this message:
"Call Rejected" Congestion
Cause: 19 - No answer from user (user alerted)"
Help...please..
