Outbound Dialer: Definition, 5 Types and When to Use Each

What is Sales Montana?

Sales Montana is a power dialer and CRM for B2B teams. Montana, its AI head of sales, finds leads, reviews every interaction and tells each rep where to focus. He grades every connected call and writes each rep's morning brief. One flat price for the platform: Engine $99 a month for up to 3 users, or Pro $297 a month for unlimited users, billed monthly. We make Sales Montana, and it appears in the table below as one power dialer among several. About us.

What does an outbound dialer do?

An outbound dialer takes a call list and places the calls for you. A rep loads a list, starts a session and the software dials, detects who picked up, shows the contact record and logs the outcome (the call disposition). Most dialers also record calls, drop prerecorded voicemails and show a local caller ID. The part that varies is pacing: how many numbers the software calls for each available rep. That one setting decides your dial volume, your connect rate per hour and whether people who answer ever hear silence.

What are the five types of outbound dialer?

Type	Lines per rep	How it works	Fits best	Abandoned calls
Preview	1, rep clicks to dial	Shows the record first; the rep reads it, then dials	Complex B2B accounts, enterprise sales	None
Power	1, dials automatically	Dials the next number as soon as the rep logs the last call	B2B SDR and founder-led teams	None
Progressive	1 or a fixed ratio	Dials only when a rep is free, at a set number of lines per rep	Mid-volume teams that want a steady pace	Rare, rises with the ratio
Predictive	Several, set by an algorithm	Dials ahead of free reps, predicting when each will finish	Large consumer call centers	Yes; capped at 3% for telemarketing
Parallel	Several, set by the rep	Calls a batch at once and bridges the first live answer to the rep	Large SDR teams on low-connect lists	Possible when two people answer

The terms overlap. Vendors often say "multi-line" for parallel, and "auto dialer" covers all five. Our power vs predictive vs auto dialer page goes deeper on the two most common modes.

Which type of outbound dialer should you use?

Start from what a conversation is worth. If one good call can become a five-figure deal, a rep should be ready when the prospect answers, which points to preview or power dialing. Preview suits named accounts where reps research before each call. Power suits list work, where the CRM record carries the context and speed matters more.

More lines raise dial volume, but they do not always raise meetings. Orum, which sells both modes, published data in September 2025 showing power dialing converted connects to meetings at about 6.4%, against about 3.8% for parallel. Parallel dialing pays off when connect rates are very low and the team is large enough to keep bridging live answers. Predictive dialing belongs to consumer call centers with many agents, short scripts and a compliance team watching the abandon rate.

Which tools offer each dialer type?

Tool	Dialer types offered	Source
Sales Montana (we make it)	Single-line power dialer with a built-in CRM	Power dialer
PhoneBurner	Single-line power dialer only	phoneburner.com
CloudTalk	Preview and power on Expert; parallel up to 10 lines as an add-on	cloudtalk.io
Dialpad	Power dialer in Sell; the newer Dialpad Dialer is progressive with N:1 lines per agent	help.dialpad.com
Close	Power on Growth; predictive on Scale	close.com
JustCall	Power on Pro; predictive up to 10 lines on SalesPro	justcall.io
Kixie	Single-line power, or up to 4 lines	kixie.com
Orum	Power and parallel. Orum's own September 2025 data: about 6.4% of connects became meetings on power, about 3.8% on parallel (report)	orum.com
Nooks	Parallel, multi-line and power	nooks.ai

Checked October 5, 2026 on each vendor's page. For prices, see the best power dialers and the comparison hub.

What compliance rules apply to outbound dialers?

This is a summary, not legal advice. Three US rules come up most:

Abandon rate. FCC rules (47 CFR 64.1200(a)(7)) cap abandoned telemarketing calls at 3% of calls answered by a live person, measured over 30 days per campaign. A call is abandoned if no rep is on the line within two seconds of the greeting, and the caller must then play a prerecorded message with the business name, a callback number and an opt-out. Predictive and parallel dialers are the types that can break this cap; preview and power dialers keep a rep on every call.
The autodialer definition. In Facebook v. Duguid (April 1, 2021) the Supreme Court held that a TCPA autodialer must store or produce numbers using a random or sequential number generator. Dialing a list you uploaded generally falls outside it, while consent rules for prerecorded or artificial-voice calls still apply.
Calling hours and Do Not Call. The same FCC rule bars telephone solicitations to residential subscribers before 8 a.m. or after 9 p.m. local time and to numbers on the National Do Not Call Registry. The FTC's Telemarketing Sales Rule exempts most business-to-business calls, but a founder's cell phone can still count as residential, so scrub lists and respect local time zones. Sales Montana scrubs leads against your DNC list before they reach the queue.

Frequently asked

What is an outbound dialer?

An outbound dialer is software that places calls from a list for a sales or call center team, so reps stop dialing numbers by hand. The five common types are preview, power, progressive, predictive and parallel dialers, which differ in how many numbers they call per rep and whether a rep is always free when someone answers.

What is the best outbound dialer for B2B sales?

For B2B teams where each conversation matters, a power or preview dialer usually fits best because every answered call reaches a prepared rep. Large SDR teams calling low-connect lists often choose a parallel dialer such as Orum or Nooks, and high-volume consumer call centers use predictive dialers.

What is the difference between a power dialer and a predictive dialer?

A power dialer calls one number per rep and dials the next only when the rep is free, so no answered call waits for a rep. A predictive dialer calls several numbers ahead of free reps and uses an algorithm to guess when one will be available, which raises volume but can abandon answered calls.

What is the 3% abandon rate rule?

FCC rules say telemarketers may abandon no more than 3% of calls answered by a live person, measured over 30 days for each calling campaign. A call counts as abandoned if no rep is on the line within two seconds of the person's greeting, and the caller must then play a short prerecorded identification and opt-out message.

Is a power dialer an autodialer under the TCPA?

Since Facebook v. Duguid (April 1, 2021), the Supreme Court has read the TCPA's autodialer definition to cover only equipment that stores or produces numbers with a random or sequential number generator. Dialers that call a list you uploaded generally fall outside that definition, but consent, calling hours, Do Not Call and abandonment rules can still apply, so check with counsel.

Legal sources checked October 12, 2026; vendor pages checked October 5, 2026. See also: outbound sales glossary · sales dialer · Sales Montana power dialer · best power dialers · all dialer comparisons · Sales Montana pricing.

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