A power dialer — also called a progressive dialer — places one call at a time for each available agent. The instant the agent finishes a call and marks the disposition, the system dials the next number on the list. No manual dialing, no looking up records, no waiting between calls. But still one call per agent, in sequence.
That 1:1 ratio is what separates a power dialer from a predictive dialer, which dials many numbers in parallel and uses pacing math to route the connected answer to whoever's free. Power dialing trades the higher throughput of predictive for tighter control over abandoned calls and a simpler model that works on any floor size.
In practice, power dialing is the right architecture for small floors, high-value lists, or operations where any abandoned call is unacceptable. It's the wrong choice for high-volume B2C calling against cold lists — at scale, the agent ends up listening to voicemail more than talking to humans.