Predictive vs progressive dialer: what's the difference?
A predictive dialer dials ahead for a pool of agents so that a live answer reaches whoever is free next, while a progressive dialer calls one number per rep and only when that rep is ready. Predictive dialing favors volume; progressive dialing favors a rep who is ready the moment someone answers.
| Predictive dialer | Progressive dialer | |
|---|---|---|
| Who it serves | A pool of agents, usually in a call center | One rep at a time |
| When it dials | Ahead of agent availability, expecting some calls to go unanswered | As soon as the rep finishes the last call |
| Numbers dialed | More numbers than there are free agents | One number per rep |
| Pause after hello | More likely, while the call is passed to a free agent | Not caused by dialing ahead; the rep is already waiting |
| Dropped calls | Possible when more people answer than there are free agents | Not caused by dialing ahead |
| Time between conversations | Short; agents wait less between calls | Every ring, voicemail and no-answer takes its full time |
| Best fit | High-volume campaigns where any agent can take any call | Reps who own accounts and need context before speaking |
Predictive vs progressive: the short answer
Pick a predictive dialer when a team of agents works a large list and any agent can handle any call. Pick a progressive dialer when each rep owns their contacts and the first seconds of every call matter.
The difference comes down to one question: does the dialer wait for the rep, or does it dial ahead of them?
What a predictive dialer does
A predictive dialer dials numbers ahead of agent availability, timing calls so that a live answer reaches an agent who is just becoming free. It serves a pool of agents rather than one rep, and the aim is to keep agents talking with as little idle time between calls as possible.
The trade-off is risk. When more people answer than there are free agents, some prospects hear silence or a dropped line. That shows up as dead air and in the abandon rate. In the US, abandoned telemarketing calls are limited by rule; see the call abandonment rule.
What a progressive dialer does
A progressive dialer calls the next number on a list as soon as a rep finishes the last call, one call per rep at a time. It removes the manual steps between calls: finding the next contact, typing the number and pressing call.
Because it never dials ahead, the person who answers is met by a rep who is ready, and there is no connection delay caused by dialing ahead. The cost is waiting: every ring, voicemail and unanswered call takes its full time. Many vendors use progressive dialer and power dialer for the same thing, so ask what a product actually does.
When each one fits
A predictive dialer fits when
- a team calls a large list where any agent can take any call
- conversations are short and similar, such as surveys or simple appointment setting
- agents don't need to read up on a contact before speaking
A progressive dialer fits when
- each rep owns a set of accounts or a territory
- the rep needs the contact's details on screen before saying hello
- the list is smaller and every conversation counts
Where Personnect fits
A parallel dialer sits between the two. Like a progressive dialer, it serves one rep. Like a predictive dialer, it dials more than one number at a time, and the rep is connected to whoever answers first.
Personnect is a parallel dialer for B2B outbound sales teams. A parallel dialer is a power dialer that calls several numbers at once, and Personnect dials up to five per rep. The rep is connected the moment a person answers, with the contact's details already on screen, and voicemail is detected and skipped, so the rep moves on to the next contact.
Personnect charges 8.5¢ per minute on answered calls; calls that ring out, are busy or fail cost nothing.
Questions to ask any dialer vendor
- How many numbers does it dial per rep at once?
- What does the prospect hear in the first second after answering? Test it on your own phone.
- What happens when two people answer at the same time?
- Does every attempt, answered or not, land in your CRM without the rep typing it?
Questions, answered
Is a progressive dialer the same as a power dialer?
Often, yes. Both terms usually describe a dialer that calls one number per rep, automatically, in sequence. Labels vary between vendors, so ask how many lines a product dials per rep and whether it waits for the rep to be ready.
Why do predictive dialers cause dead air?
When a person answers, the call has to reach a free agent. If no agent is free yet, the prospect hears silence, or the call is dropped. A progressive dialer avoids this by waiting until the rep is ready before it dials.
Which is better for B2B sales?
For reps who own accounts and need context before they speak, a progressive dialer is usually the better fit. Predictive dialing suits high-volume campaigns where any agent can take any call. A parallel dialer is a third option that dials several numbers for one rep.
Are predictive dialers legal?
That depends on how and whom you call, and it is a question for counsel. In the US, rules limit abandoned telemarketing calls, and consent and do-not-call rules apply whichever dialer you use. The glossary entries on the call abandonment rule and the TCPA cover the basics.