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contactSPACE is a cloud-based callcenter solution which helps small to large-sized organizations manage contacts and track agent performance. Its key features include dynamic call adaption, voice recording, call prioritization, ro...Read more about contactSPACE

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Genesys Cloud CX

Genesys Cloud CX™ cloud contact center software transforms your customer experience. It connects data across teams, tools, interactions so you have actionable insights to address customers problems with ease on any channel, at any...Read more about Genesys Cloud CX


Squaretalk is a cost-effective, scalable, and simple-to-use cloud communications platform that gives your sales and support teams tremendous tools to boost efficiency and productivity. Your sales and support representatives will ...Read more about Squaretalk

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CloudTalk is a contact center management solution that enables businesses to streamline communications with teams and customers using virtual call systems. It allows executives to manage inbound/outbound calls, extract interaction...Read more about CloudTalk


DialerAI is a cloud-based and on-premise predictive dialer software, which assists businesses of all sizes with processes related to live call transfer, interactive voice response (IVR) and voice broadcasting. Its key features inc...Read more about DialerAI

5.00 (4 reviews)


Bitrix24 is an online workspace for small, medium, and large businesses. It features over 35 cross-integrated tools, including CRM, tasks, Kanban board, Gantt chart, messenger, video calls, file storage, workflow automation, and m...Read more about Bitrix24


ICTBroadcast is unified communications dialing software featuring auto , predictive , power, progressive, preview as well as manual dialing support . ICTBroadcast is equally beneficial for small businesses, entrepreneurs and serv...Read more about ICTBroadcast

4.00 (5 reviews)


XCALLY is an on-premise and cloud-based contact center solution that handles multiple channels including voice, chat, SMS, email, fax and others. It caters to inbound, outbound and blended call centers of all sizes. Primary featur...Read more about XCALLY

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3CLogic is a leading cloud contact center platform modernizing enterprise communications for employees and customers. Built on AWS, the solution provides advanced and scalable speech-enabled offerings for leading CRMs, including S...Read more about 3CLogic

4.31 (49 reviews)

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Ytel Contact Center is a cloud-based integrated marketing suite that caters to SMB call centers and businesses with dedicated phone support teams, helping them manage multi-channel communications. The solution offers features...Read more about Ytel

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RingCentral Contact Center

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RingCentral's leading cloud contact center offers skill-based routing, agent management, real-time insights, and more to empower your employees to deliver better customer experiences. With the right tools, your agents can meet you...Read more about RingCentral Contact Center

4.27 (171 reviews)

9 recommendations

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FieldWorkMobility is a cloud-based mobile field sales solution that aids users with customer outreach and serves as a mobile customer relationship management (CRM) suite. The solution is suitable for sales team of all sizes and bu...Read more about MySalesDialerPro|FieldWorkMobility

4.56 (9 reviews)


PhoneBurner is an outbound call center solution that allows users to log in from their computer and make calls from the connected phone, using imported or admin-provided lead lists. The system offers functionalities that include p...Read more about PhoneBurner

4.82 (162 reviews)

3 recommendations

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Metaphor Contact Center

USAN provides an omni-channel customer engagement solution for midsize organizations to help them manage their contact center operations and deliver personalized customer support via inbound and outbound channels. It enables busin...Read more about Metaphor Contact Center

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Convoso’s all-in-one contact center platform generates and converts leads faster using multiple communication channels. The cloud-based solution offers multiple dialing modes (predictive/power/preview) along with two-way texting, ...Read more about Convoso

4.59 (58 reviews)

1 recommendations

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Ameyo is a customer experience management solution that helps businesses leverage their call center resources to improve customer satisfaction. The software is available both in cloud-based and on-premise deployment options. ...Read more about Ameyo

4.08 (83 reviews)

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Newfies-Dialer is a cloud-based voice broadcasting, autodialer and phone survey solution that helps users manage concurrent calls from a centralized location. Newfies-Dialer features live lead transfer which enables users to ...Read more about Newfies-Dialer

5.00 (4 reviews)

Kixie PowerCall

Kixie is a cloud-based interactive voice response (IVR) solution that helps users automate their sales processes. It can also be deployed on-premise. It offers users one-click dialing, call recording, call history, call coaching a...Read more about Kixie PowerCall

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CallTools is a predictive dialer and inbound call center management solution that helps businesses manage the productivity of their call center operations. CallTools features list management with list scrubbing, recycling and...Read more about CallTools

4.79 (86 reviews)

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Ringio is a cloud-based call center management solution that features a CRM dialer, call routing, analytics and more. It’s used by sales teams in many industries such as healthcare, media, non-profit and banking. The system c...Read more about

4.05 (19 reviews)

Buyers Guide

Last Updated: November 21, 2022

Predictive dialers are sophisticated, so you need to understand how they work and how they differ from other kinds of auto dialers before you invest in one. We’ve written this guide to help you learn what you need to know to make an informed purchase.

(Click on a link below to jump to that section.)

What Is Predictive Dialer Software?
How Do Predictive Dialers Work?
What Are the Features of Predictive Dialers?
What Are the Major Uses of Predictive Dialers?
What Are the Limits of Predictive Dialers?

What Is Predictive Dialer Software?

Predictive dialer software is a type of automatic dialing system that helps call center agents work more efficiently by screening calls and predicting when call agents will be available to answer based on call metrics. It can be used to upload contact lists, dial multiple numbers simultaneously, screen for voicemails or busy signals, and more.


How Do Predictive Dialers Work?

The term “predictive dialer” is often used as a synonym for “auto dialer.” In fact, predictive dialers represent a major evolutionary leap forward from auto dialers.

Most people would assume that if an auto dialer just places another call when an agent hangs up, the agent is spending enough time on the phone.

But if you work in an outbound call center, you know that many dialed calls never get answered. Those that do frequently go to voicemail, or the recipient of the call gets annoyed and hangs up.

In the late 1980s, Douglas Samuelson invented the predictive dialer to solve this problem.

Predictive dialers assume that many calls will go unanswered. They forecast when an agent will wrap up a call based on historical call length data, and begin dialing before the agent actually wraps up the call she or he is currently handling.

This is only half of the story, however. Predictive dialers also deliberately overdial.

Instead of simply dialing one call for each available agent, waiting for the call to end and dialing again, they dial more calls than agents could possibly handle if all of those calls actually got answered (which of course never happens).

Predictive dialers then screen out busy signals, answering machines and hangups to ensure that only live calls get distributed to an agent once she or he wraps up the current call.

The “predictive” part of predictive dialing involves feeding data about call center performance (such as the rate of abandoned calls, average call length etc.) into statistical algorithms, which forecast approximately when an agent will wrap up a call. The diagram below gives a simplified overview of a predictive dialer’s operations:

Overview of Predictive Dialing Functionality

Overview of Predictive Dialing Functionality


The good thing about these algorithms? You don’t need to understand them. Predictive dialer systems offer simple, rule-based interfaces that hide all the statistical mechanics of the system from users.

While predictive dialers are found in some integrated suites of call center applications, many vendors still offer them as standalone applications. Early dialers were hardware-based solutions, but cloud vendors now offer hosted predictive dialers as well.

What are the Features of Predictive Dialers?

The following features can be found in most predictive dialers:

Upload lists Upload lists of contacts for campaigns, generally in .CSV format.
Manage numbers Manage numbers in the lists you upload. For example, ensure that even if a number appears twice in a list, it only gets dialed once. You can also avoid calling cell phones or numbers in specific area codes.
Do Not Call (DNC) Compliance Track callers’ requests to be placed on the DNC list in real time. Upload your organization’s DNC list to the National Registry and exclude those numbers from your campaigns.
Vertical dialing Upload and dial multiple numbers for each contact (particularly important for collection agencies that need to improve their list penetration rates - i.e., the rate of successful communication attempts out of total communication attempts in an outbound campaign).
Custom caller ID/local presence dialing Control the name and number that appears on outbound caller ID. You can also dial out from a number in the same area code as the contact.
Call scheduling rules Limit the times of day the dialer begins and ends making calls.
Dialing rate Control how many times the dialer rings each contact. Many dialers can adjust the dialing rate according to lead priority for outbound sales calls.
Answering machine detection Screens calls answered by machines from agents. Dialers can also avoid voicemail, busy signals, FAX machines etc.
Agent scripts Customize predefined, branching scripts that help agents to handle calls consistently throughout your contact center.
Pacing algorithms Adjust pacing to meet defined rules. In particular, users can define an acceptable call abandonment rate. If the dialer exceeds this rate, it adjusts pacing by dialing fewer calls until the abandonment rate drops.
CRM integration Dialers can integrate with your CRM system to track your agents’ activities.

What Are the Major Uses of Predictive Dialers?

Predictive dialers aren’t right for all call centers. They’re the most aggressive kind of outbound dialer out there. For some call centers, reaching contacts with a predictive dialer will be like hunting rabbits with a bazooka. However, they’re ideal for the following purposes:

  1. Collections: Predictive dialing was born in the collections industry, and while many contact centers are moving to multi-channel operations, there’s little chance a debtor will respond to a Facebook message or text message. If you’re in collections, look for industry-specific features, such as vertical dialing.
  2. Billing: Predictive dialers can be used to notify your customers that they have unpaid invoices.
  3. Telemarketing: While the DNC Registry places limits on how dialers can be used for telemarketing, they can also be used for this purpose given the high rate of hangups, busy signals etc. when contacts aren’t expecting calls.
Campaign Performance Reporting in PIMS Dialer

Campaign Performance Reporting in PIMS Dialer

What are the Limits of Predictive Dialers?

The delay that we mentioned before is a big hurdle. Have you ever answered a telemarketing call, only to wait for a noticeable length of time before someone responds to your “Hello?” Perhaps you’ve already started speaking when the agent then interrupts you with a script.

This delay is caused by the fact that predictive dialers only connect live calls, so they “listen” for a human voice before sending the call to an agent. Obviously, this can annoy your customers, so you need to make sure that you’re not calling your most valuable leads with a predictive dialer.

Other types of auto dialers don’t have this functionality, and connect calls without any delay. If courtesy to your leads or customers is more in line with your business goals, consider a standard progressive or preview dialer.

The efficiency gains you can achieve with a predictive dialer are also influenced by the size of your call center. If you only have two agents, it doesn’t pay off to invest in a fancy system to forecast when they’re going to wrap up their calls.

You need to have at least 8 to 10 agents to see the benefits of a predictive dialer.

Finally, predictive dialers can vastly increase your chances of annoying the masses. Make sure you’re complying with the Telephone Consumer Protection Act if you’re operating in the U.S., and check local laws and regulations if you’re not. Many countries place severe restrictions on the use of dialers, particularly predictive dialers.