Power, predictive or AI dialer: which one fits your team?
Which dialer fits your team?
Pick the dialer mode by matching how fast it dials to how many agents you have free and how strict your call rules are: preview or progressive for smaller teams and careful accounts, power or predictive only when a large team works a large list. An AI dialer is a different tool, and it should only call people who already deal with you.
Most teams don't need the most aggressive mode they can buy. They need the one that keeps agents talking without leaving the people they call waiting on a silent line. This guide explains what each mode does, compares them side by side, and then walks through choosing by list size, by team size and by the call rules you work under. It applies whether you run a call center in the US or a call centre in Australia, though the rules section is US first.
Book a 30 minute demo if you'd like to talk it through with your own lists in mind, or call (888) 882-2918 in the US or 1800 403 307 in Australia.
The five modes in one table
Every mode below answers the same question differently: when does the next call get dialed, and who is waiting when the person picks up? The table keeps it qualitative, because the real numbers depend on your lists, your agents and your settings.
| Mode | How it dials | Agent idle time | Abandonment risk | Best fit |
|---|---|---|---|---|
| Preview dialer | The agent sees the record first, then starts the call | High | Very low | Complex accounts, high-value or sensitive conversations |
| Progressive dialer | Dials the next number only when an agent is free, one call per agent | Medium | Low | Small to mid-size teams, rule-heavy calling |
| Power dialer | Dials automatically as agents free up, often more than one number per free agent | Low to medium | Medium | Larger teams working long lists of known contacts |
| Predictive dialer | Paces calls ahead of demand, based on how soon it expects agents to be free | Low | High | Large teams with large lists and close monitoring |
| AI dialer (voice AI) | A voice AI agent holds the conversation itself, so no human needs to be free | Not applicable | Not tied to agent availability | Reminders and follow-ups to existing clients only |
Vendors don't always use these names the same way. "Power dialer" in particular is used for anything from one call per agent to several calls per free agent, so ask any provider exactly how their version paces calls.
Preview dialer
A preview dialer shows the agent the contact's record and lets them decide when to place the call. Nothing is dialed until the agent is ready.
Preview is the slowest mode, but it's the safest when each call needs thought: a disputed account, a high-balance customer, a conversation where the agent should read the last notes first. Abandonment is close to zero because the agent is always the one starting the call.
Progressive dialer
A progressive dialer automatically dials the next number as soon as an agent becomes free, one call per agent at a time. It removes the manual step without dialing ahead.
Progressive is the middle ground most smaller teams settle on. Agents spend less time between calls than with preview, and because there is never more than one call in flight per free agent, a person who answers almost always reaches someone.
Power dialer
A power dialer dials automatically as agents become available, and in many setups places more than one call per free agent. It trades some risk for more conversations per hour.
The extra calls mean more calls are answered when no agent is ready. That's where abandonment comes from. A power dialer suits teams large enough that someone is usually free, working lists where every person called has a reason to expect the call.
Predictive dialer
A predictive dialer uses recent call outcomes to estimate when agents will be free and dials ahead of that moment. It keeps idle time lowest and carries the highest abandonment risk.
Predictive mode works best with many agents and long lists, where the math has enough calls to predict well. With a small team, the estimate swings too much, and more people pick up to silence. It needs close monitoring of abandoned calls against the rules you work under.
AI dialer
"AI dialer" usually means a voice AI agent that holds the call itself, rather than a dialer that connects calls to people. Because no person needs to be free, idle time and agent-driven abandonment don't apply in the same way.
How you use it matters more than the mode. At AutoCall, voice AI is used for outbound calls only to existing clients, people who already deal with the business, for things like reminders and follow-ups. It isn't a tool for calling people who don't know you.
Collections work differently. In collections, your agents place the outbound calls using AutoCall's dialer. AutoCall's voice AI works on the inbound side: it answers calls from account holders, takes payments and transfers the caller to a person on your team during operating hours.
How AutoCall's dialer paces calls
AutoCall's dialer uses progressive-style dialing with pacing: it places calls as agents become free, and you control the pace for each campaign. Pacing settings include a call interval you set per campaign, plus daily and hourly caps on calls.
Answering machine detection is optional, so you can choose whether the dialer screens for machines on a campaign.
When a call is answered and every agent is busy, the caller waits in a queue with hold music. If they wait past the maximum time you set, the call overflows to voicemail or a hang-up, depending on your settings.
Choosing by list size
List size decides how much pacing actually buys you.
Short lists. If you're working a short list of accounts or contacts each day, the time saved by dialing ahead is small, and a missed connection costs you a real conversation. Preview or progressive keeps every answered call with an agent.
Medium lists. As lists grow, the gaps between calls add up across a shift. Progressive usually closes most of that gap. Move up to power dialing only if you can watch abandoned calls closely.
Long lists. Very long lists, worked by many agents, are where power and predictive modes earn their place, because the pacing has enough volume to work. Even then, pacing ahead only makes sense for people with a reason to expect your call, such as customers, account holders or people who asked to be contacted.
Whatever the size, keep the list clean. Wrong numbers and stale records waste dials in every mode and make pacing less accurate.
Choosing by team size
Team size decides whether there is likely to be a free agent when someone answers.
One to a few agents. With a small team, any mode that dials ahead will often connect a person to nobody. Preview and progressive fit best. A small team can also use AutoCall's progressive-style dialing, with a per-campaign call interval and daily and hourly caps, so the pace matches the people available.
A mid-size team. With more agents, a progressive dialer keeps everyone busy without much risk. Power dialing can work when supervisors watch the results.
A large team. Large teams have enough agents for predictive pacing to estimate well. They also have the most to lose if pacing runs too hot, so the settings and the monitoring matter as much as the mode.
Supervisors help in any team size. With AutoCall, a supervisor can listen in on a live call, whisper to the agent without the customer hearing, or barge in to join the call. Calls can be recorded, transcribed and summarized, so you can review how conversations went whichever mode you use.
Choosing by call rules
Call rules can rule a mode out before list size or team size come into it.
The US abandonment rule
In the US, the FCC's telemarketing rule at 47 CFR 64.1200(a)(7) says no person or entity may "Abandon more than three percent of all telemarketing calls that are answered live by a person, as measured over a 30-day period for a single calling campaign." The same paragraph says a call is "abandoned" if "it is not connected to a live sales representative within two (2) seconds of the called person's completed greeting" (47 CFR 64.1200, eCFR).
Two points follow from the wording. The rule is written about telemarketing calls, and it measures abandonment per calling campaign over each 30-day period. Modes that dial ahead of agents, power and predictive, are where that limit comes into play.
Collections calls
Collection agencies, accounts receivable teams and lenders' collections teams also work under call frequency and calling time rules. Regulation F's 7-in-7 rule explains those limits. For collections, slower modes are often easier to run inside your own calling policy, because every call has an agent ready.
AutoCall's dialer has three features that help teams put their own calling policy into practice:
Call attempt limits per account. Limits are linked to the debtor account number, so the dialer holds further calls on an account once the limit you set is reached.
Calling hour windows. You choose the hours when outbound calls may be placed, and the dialer keeps calls inside them.
Blocks triggered by inbound calls. When an account holder calls in, a block can stop further outbound calls to them.
See how this fits a collections operation on the debt collection software page.
Australian readers
In Australia, different rules apply to outbound calling. Check the ACMA's rules for the calls your team makes before choosing a mode.
This guide is general information, not legal advice. Check with your compliance counsel before changing how your team dials.
What inbound AI adds alongside the dialer
Whichever mode your agents use, some of the people they call will call back. That's where AutoCall's voice AI fits for a collections team: it answers those inbound calls, takes payments and transfers to a person during operating hours.
This is an inbound AI result, not a dialer abandonment rate:
A US collections company using AutoCall's voice AI on inbound calls collects US$150,000 to $200,000 in a typical month. Its best month topped $235k, with call abandonment under 1%.
AutoCall's own CRM is coming soon. Today, the dialer and the voice AI work alongside the CRM you already use.
Questions teams ask about dialer modes
What's the difference between a power dialer and a predictive dialer?
A power dialer dials automatically as agents become free, often placing more than one call per free agent. A predictive dialer estimates when agents will be free and dials ahead of that moment. Predictive keeps idle time lower but carries more abandonment risk.
What is a progressive dialer?
A progressive dialer dials the next number automatically as soon as an agent is free, one call per agent. It removes manual dialing without dialing ahead, so a person who answers almost always reaches an agent.
What is a preview dialer?
A preview dialer shows the agent the contact's record first and lets them choose when to place the call. It's the slowest mode and has the lowest abandonment risk, which suits complex or sensitive accounts.
Which dialer mode has the lowest abandonment risk?
Preview, then progressive, because both only place a call when an agent is ready. Power and predictive modes dial ahead of agents, which is where abandoned calls come from.
How does AutoCall's dialer pace calls?
AutoCall's dialer uses progressive-style dialing with pacing. You set a call interval for each campaign, plus daily and hourly caps on calls, and answering machine detection is optional.
Who dials in collections, agents or AI?
Agents. In collections, your agents place the outbound calls with AutoCall's dialer. AutoCall's voice AI answers inbound calls from account holders, takes payments and transfers the caller to a person on your team during operating hours.
Match a dialer mode to your team on a call
Book a 30 minute demo and we'll walk through your list sizes, your team and the rules you work under, and show how AutoCall's dialer and inbound voice AI fit together.
Book a 30 minute demo, or call AutoCall on (888) 882-2918 in the US or 1800 403 307 in Australia.