The agents are waiting a long time between calls
The reason for this can be several things. The most common is that the calls being made are ending up as mostly answering machines, no answers, disconnected or bad numbers, etc. This can be caused due to the time of day and/or quality of the list. However, the Dial Ratio and Drop Rate are also possible factors in "slow" dialing
The Dial Level controls how many lines will dial when an agent logs in. So, if the Dial Ratio is set to 2, then when an agent logs in two of the lines will dial. To "speed up" the dialing you may want to raise this number but pay attention to how many agents you have logged in and how many total outbound lines you have. When you have raised the Dial Ratio, then click Save Changes. This can be done in real time while the campaign is running.
The other part of the throttle is the Drop Rate. A drop occurs when a call is not able to be transferred to an agent because all agents are on engaged at the time. The Predictive dial method is programmed to "slow down" or reduce the Dial Level when the Drop Rate exceeds the maximum setting. Usually the Drop Rate is set to 3%, so the system will try to keep the drop percentage below that amount.