With the Pro-Version, I can limit the total caller of a Call Queue. This is the amount of callers already connected to an agent plus the waiting callers in the Queue. It would be nice to have a limit for the waiting callers in the Queue. This is needed especially in Germany for Call Centers, where it's not allowed to have a Caller in a Waiting-Queue if he needs to pay for the call (except free-calls). The line must be busy if no agent is available. Using a Ring Group is not a solution, as we don't have the wallboard/statistics and all phones are ringing the whole time.