Types of dialer: preview, progressive, power, predictive, robo and manual dialing explained
The types of dialer are the different ways calling software decides when to ring a number and how many lines to open for each agent, from preview to predictive. Telodial uses one of them: power dialing, one call at a time from the SIM in the caller's phone, the next number rung once the caller is free.
- Six common kinds, sorted by pace
- Lines per agent tell them apart
- Telodial dials one lead at a time
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What are the types of dialers?
Dialers come in six main types: preview, progressive, power, predictive, robo and manual click-to-call, separated by who starts each call and how many lines each agent gets.
Telodial is a power dialer inside a telecalling CRM: each handset rings one lead, waits for that conversation to finish, then rings the next after the set gap.
Call centres sort dialers by two questions: who decides when a number rings, and how many lines stay open for each person able to talk. A preview dialer puts the customer file in front of the agent and only rings once they choose to. A power dialer rings the next number by itself once a caller is free and a set gap has passed, one line each; some vendors sell the same pacing as progressive dialing. A predictive dialer runs statistics on answer rates to dial ahead of the floor, and a robo dialer, also sold as voice broadcasting, speaks a pre-recorded message while no human is listening. Manual and click-to-call dialing leave every call to a person. Telodial, a phone-based telecalling CRM, is a power dialer: each handset rings one lead at a time on its own SIM, moves to the next once the caller is free and the gap runs out, gives an unanswered number up to three more chances, and has no predictive or robo mode.
- Preview and manual: a person presses call
- Power and progressive: one line per free caller
- Predictive and robo: software dials ahead of people
Knowing the types of dialer: benefits for a buyer
- Fewer silent calls A one-line type means everyone who answers hears a caller, never dead air.
- Clearer vendor demos Asking how many lines open per agent cuts through the marketing names in a pitch.
- The right cost model Predictive and robo systems usually bill minutes on rented lines; a SIM dialer runs on your existing plan.
- Rules you can plan for Automated and recorded calls carry extra rules in many countries, so the type decides the paperwork.
Types of dialer compared side by side
| Type of dialer | How it decides when to ring | Lines per agent | Best for |
|---|---|---|---|
| Preview | Agent reads the record, then presses call | One | Account calls with notes to read first |
| Power | Rings the next number once the caller is free, after a set gap | One | Teams calling their own enquiries |
| Progressive | The same pacing as power, under another vendor name | One | Vendor feature lists and contact-centre suites |
| Predictive | Statistics on answer rates and call length | Two or more, varying | Floors of fifty-plus agents on cold lists |
| Robo or voice broadcast | Plays a recording to whoever picks up | None | Notices and reminders, tightly regulated |
| Manual or click-to-call | A person dials or clicks each number | One | Short lists of prepared, named accounts |
How the pages ranking on google.co.in used each name, read 20 October 2026. Telodial's single-line dialing as stated in its feature list of 14 October 2026.
Which types of dialer suit which team
Start from the list rather than the software. A team ringing people who asked to be called has a list that answers well and a reputation to protect, so a single line per caller costs very little and keeps every answered call staffed. A floor ringing bought data that mostly goes unanswered has the opposite problem: agents sit idle between rare connections, and dialing ahead of them is what keeps the floor busy.
Headcount comes next. Predictive pacing needs enough agents for its guesses to average out, which in practice means dozens of seats, rented lines and a bill per minute. Below that the guesses swing and silent calls pile up. Preview dialing suits the other extreme, a modest number of calls that each need a minute of reading beforehand.
Telodial covers manual dialing from the keypad, click-to-call from a number in a Chrome browser, one-line power dialing sessions over any list with a gap the admin can lock, and a WhatsApp calling mode capped at 20 calls a day unless the cap is raised. It has no predictive pacing, no recorded-message broadcasting and no IVR. A large outbound floor working cold data, or a business that wants automated voice messages, should pick a cloud contact-centre platform instead.
Example: choosing a dialer for an outbound team in Cebu
The operations head of a 12-seat outbound team in Cebu calls members of a dental plan about renewals, roughly 1,800 numbers a week, and has a quote for a predictive system on the desk.
About seven in ten members pick up, because they know the clinic group's name. With that answer rate, two lines per agent would leave a member listening to silence several times an hour, and every one of those members is a patient of the clinics.
The team chooses one-line power dialing with a 30-second pause. Each seat finishes about 25 conversations a day instead of the 35 the vendor projected, and no patient answers to dead air. The team and its figures are an illustration, not a customer.
A worked illustration with round numbers, not a customer record.
Types of dialer FAQ
What is a dialer in a call center?
It is the software that picks the next number from a campaign list, places the call and passes the answered call to an agent together with the customer record. In a large BPO it is part of a cloud contact-centre platform; on a small sales team it can be an app on each phone.
What is a 3-line dialer?
A 3-line dialer rings three numbers at once for a single agent and connects whichever answers first, dropping the other two. It is a form of parallel dialing, and the dropped answers become silent calls, so it fits cold lists with low answer rates rather than customers expecting your call.
Which dialer is best for a call center?
That depends on the list and the headcount. Fifty or more agents on cold data get the most from predictive pacing; teams ringing warm enquiries or existing customers do better with power dialing; account managers with long notes prefer preview. Decide by answer rate first and team size second.
What is the difference between a preview dialer and a power dialer?
Who presses call. With preview dialing nothing rings until the agent has read the file and chosen to dial, so preparation time has no limit. A power dialer starts the next call by itself once the agent is free and the set gap has passed.
Is a power dialer the same as a progressive dialer?
Usually, yes: many vendors use both names for one line per free agent. A few products stretch the word power to cover two or three lines per agent, so ask any vendor how many lines open for each person before comparing prices.
What is an agentless dialer?
A dialer with no person on the call: it plays a recorded message, sometimes with a keypad menu, to whoever answers. It is used for payment reminders and notices, and most countries regulate recorded calls more tightly than calls a person places.
Can one team use more than one type of dialer?
Yes, and plenty do: power or predictive dialing for a big campaign, preview for callbacks to valuable accounts, and plain manual dialing for one-off calls. What matters is that every mode writes the outcome into the same customer record.
Which type of dialer avoids silent calls?
Preview, power and manual dialing, because a person is already free when each number rings. Predictive and multi-line dialers create silent calls whenever more people answer than there are agents waiting.
Which type of dialer suits a small team calling its own leads?
One line per caller, ringing from a number customers recognise. For teams of two to fifty working enquiries from their phones, the dialer that fits that description is Telodial, which pairs one-at-a-time dialing with the lead record and follow-up reminders.
What type of dialer is Telodial?
Telodial is a power dialer built into a telecalling CRM: each Android or iPhone handset rings one lead on its own SIM, waits for that call to end, opens the outcome sheet, and rings the next number once the set gap runs out.
Does Telodial offer predictive or robo dialing?
No. Each phone carries one conversation at a time, so there is no predictive pacing, and Telodial plays no recorded messages and has no IVR. It does offer auto redial, a ring limit and a mode that dials the list over WhatsApp.
How much do the types of dialer cost with Telodial?
Cloud predictive and robo systems typically charge per seat plus rented numbers and minutes. Telodial is one power dialer at one price per caller with no minute charges: ₹176 a month billed yearly (₹2112 in all, with buyers abroad paying $31 per caller annually), or ₹297 a month when billed every quarter (₹891), before tax.
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