Adapt Percent-Max Percentage explained

If your campaign runs the ADAPT_PERCENTMAX dial method, there is one setting that decides how sharply the dialer slows down when you start dropping too many calls: the Adapt Percent-Max Percentage. It is a small number with a big effect, and most people set it once without really knowing what it does. This walks through how it works in plain terms, and how to pick a value that keeps you compliant without throttling your floor.

What this setting actually controls

When you use Predictive dialing, VICIdial decides how many lines to dial per agent. ADAPT_PERCENTMAX caps that aggressiveness using two values together: your Maximum adapt dial level and the Adapt Percent-Max Percentage. The percentage is simply how much of that ceiling the dialer is allowed to use once your drop rate crosses the limit you set. Think of the maximum as the speed limit and the percentage as how far below it you coast once you get a warning.

An example makes it concrete. Say your Maximum adapt dial level is 3.0 and your percentage is the default of 50. When your drop rate climbs past the limit, the dialer calculates 50% of 3.0, which is 1.5, and uses that as the Dial level instead of pushing all the way up. If that calculated number is actually higher than where the dialer already sits, it leaves things alone for the moment rather than speeding up.

How it pairs with the drop limit

The trigger for all of this is your Drop percentage limit. In the United States the regulatory ceiling on dropped-to-answered calls is 3%, so most campaigns set the limit at or below that. While you stay under it, the dialer keeps trying to find your most efficient pace. The moment you breach it, the percentage kicks in and clamps the Dial level back toward the floor you defined.

This makes ADAPT_PERCENTMAX feel different from the tapered or average methods covered in the VICIdial dialing strategies guide. Instead of easing the pace gradually, it snaps to a known fraction of your maximum, so you always know roughly where the dialer lands after a breach. That predictability is the whole point of the method: you trade some smoothness for a hard, calculable landing spot.

Picking a value that fits your floor

Lower percentages mean a harder pullback. At 30, a maximum of 3.0 falls to 0.9, which is gentle and close to one line per agent. At 70, it stays high at 2.1, which keeps the pace busy but risks bouncing back over the limit quickly. The default of 50 sits in the middle and works for most lists, so start there unless you have a clear reason not to.

If you find the dialer keeps breaching the limit and recovering in a loop, a lower percentage gives it more headroom to settle before climbing again. If your drops are already well under control and you want more pace, nudge it up a few points and watch the numbers over a full shift before deciding. For a fuller checklist on keeping abandons down, the guide on how to lower your VICIdial drop rate covers the other levers worth pulling first, several of which matter more than this one number.

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