AI-enabled calling is different from the other three. It describes how the calling process is supported, not how interested the prospect is. A human still makes the call and speaks with the prospect, while software helps with targeting, call preparation, compliance checks, and performance review.
Cold calling still works. But the approach matters. Calling a poorly targeted list over and over is very different from reaching the right person with a relevant reason to talk.
In this guide, we'll break down the differences between cold, warm, and hot calling, look at what the research actually says about cold calling today, and explain where AI fits into the process.
What is cold calling?
Cold calling is making a first phone contact with someone who doesn't know your business and hasn't asked you to call.
In B2B sales, the goal usually isn't to close a deal on the first call. It's to start a conversation, understand whether there's a potential fit, and book a meeting with the appropriate person.
That sounds straightforward, but there's a reason cold calling is difficult: the prospect hasn't given you much to work with.
You need to identify the right companies, find the people who are likely to own the problem you're solving, and give them a reason to listen. If the list is wrong or the opening is irrelevant, a better script probably won't save the call.
A good B2B cold call has three basic parts:
- A relevant person: You're speaking with someone who has a reason to care about the problem.
- A relevant reason: You can explain why you're calling that particular person or company.
- A natural conversation: You give the prospect room to respond instead of delivering a memorized pitch.
For example:
"Hi, this is Jordan with [your company]. Quick heads-up: this call is recorded for quality and training. I work with operations leaders at regional logistics companies on dispatch scheduling. Can I have 30 seconds to explain why I called, and you can decide if it's worth a longer conversation?"
The point isn't that every rep should use those exact words. It's that the caller should quickly explain who they are, why they're calling, and what the conversation might be about.
A live B2B prospecting call is also different from consumer telemarketing or an automated robocall. The rules can differ depending on the number being called, the technology used, and the purpose of the call. We'll cover the legal distinctions below.
For a closer look at how businesses use outsourced phone prospecting, see our guide to B2B telemarketing services.
What is warm calling?
Warm calling is contacting someone when there's already some context for the conversation.
Maybe a mutual contact made an introduction. Maybe the prospect attended a webinar, downloaded a guide, replied to an email, or showed a buying signal that gives you a relevant reason to reach out.
That context changes the opening.
Instead of introducing yourself to a complete stranger and explaining why you're calling, you can refer to the interaction that brought you to them.
Common warm-calling opportunities include:
For example:
"Hi, this is Jordan with [your company]. Priya Shah suggested I reach out. She mentioned you're adding two dispatchers this quarter, which is usually when scheduling starts to become more complicated. Is that a fair read?"
The caller has something specific to reference. The prospect doesn't have to guess why they're being contacted.
Warm calling isn't automatically easy, though. A downloaded guide doesn't necessarily mean someone wants a sales call, and a hiring announcement doesn't prove the company needs your product. The signal gives you a starting point, not permission to assume interest.
There's also a trade-off: warm prospects are generally more limited in number than cold prospects. You can only call the people who have given you some kind of relevant signal or connection.
We couldn't verify a reliable public benchmark that directly compares warm-call conversion rates with cold-call conversion rates, so we won't invent one.
What is hot calling?
Hot calling is following up with someone who has explicitly asked to hear from your business.
Examples include:
- Someone who requested a product demo.
- A prospect who submitted a callback request.
- Someone who asked for pricing information.
- A buyer who filled out a contact form and requested a conversation.
The important difference is that the prospect has already expressed interest. You're not trying to create the initial reason for contact. You're responding to it.
With hot calling, speed matters.
A frequently cited lead response study by InsideSales.com and Dr. James Oldroyd of MIT found that "the odds of contacting a lead in 5 minutes versus 30 minutes drop by 100 times." The study is from 2007, covered six companies, and was conducted with a sales technology company, so its exact figures should be treated cautiously. The broader lesson is still useful: waiting too long to follow up can cost you the opportunity.
A hot-call opener might sound like this:
"Hi, this is Jordan with [your company]. You requested a demo about ten minutes ago, so I wanted to catch you while it's fresh. What made you start looking at us today?"
The work here is less about researching a stranger and more about routing the inquiry to the right person quickly.
One limitation: hot calling converts interest that already exists. It doesn't replace outbound prospecting when you need to reach buyers who haven't discovered your business yet.
What is AI-enabled calling?
AI-enabled calling uses software to support the work around a phone conversation.
The distinction is important: AI-enabled calling doesn't necessarily mean an AI voice is talking to your prospects. In a human-led model, a real person still dials the number, speaks with the prospect, handles questions, and books the meeting.
Software helps the rep and the people managing the campaign work more effectively.
That support can include:
- Organizing prospect lists and campaign targeting.
- Checking numbers against do-not-call and suppression lists.
- Enforcing calling-hour and attempt limits.
- Displaying the script, prospect details, and objection guidance.
- Transcribing calls and reviewing them against quality criteria.
- Helping managers identify calls that need coaching.
These tools can support cold, warm, and hot calling. The prospect's level of interest doesn't determine whether AI can help with the process.
For a deeper comparison with fully automated AI callers, see AI SDRs vs human SDRs.
Intentional Outreach uses a human-led calling model supported by software. Here's how the process works.
1. Campaign targeting and prospect lists
Each campaign defines the industries, company sizes, buyer titles, seniority levels, and geographic areas being targeted. Clients can upload their own prospect list and a suppression list covering customers, open deals, partners, and opt-outs, and can name companies that must never be called.
Any leads we source for a campaign are checked against those lists to avoid duplicates and excluded contacts.
2. Checks before the call
Before every call, the dialer checks the Do Not Call list and the client's suppression list. It also checks that the call falls within allowed calling hours in the prospect's local time, and it limits how often the same number is called.
Here's how we set it up: up to six attempts without reaching the buyer, a two-day rest after no answer, and a maximum of three calls to the same number per campaign within 24 hours.
Reps can't skip these checks in the dialer.
3. Scripts, recording, and coaching
During campaign setup, AI helps draft the campaign playbook and rep quiz. The client can review and edit both before the campaign begins.
Reps have the campaign script, prospect details, and objection-handling guidance available while calling. Every call starts with a recording notice. If a prospect objects to recording, we don't keep a copy of the recording, and the call isn't transcribed, scored, or played back.
Managers can review calls and coach reps. Live AI coaching prompts and AI-written call summaries are part of the app we're building, rather than features we present as already available.
4. After-call review and qualification
Booked calls can be transcribed and scored against our call-quality rubric. The scorecard includes an overview of the call, helping managers prioritize which conversations need attention.
The rep must confirm every required qualification item before logging a meeting. While they log it, a qualification check compares the transcript with the client's required criteria and flags anything that doesn't appear to have been confirmed. This check is advisory; it doesn't automatically block the meeting.
Our team reviews disputes against the call recording and the client's criteria. AI doesn't make the final dispute decision. Client playback of recordings is also part of the app we're building.
The idea is straightforward: let people focus on the conversation while software helps with the repetitive work surrounding it.
Cold vs warm vs hot calling: side by side
A note about the numbers: connect rate per dial, meeting-booking rate per conversation, and overall meeting conversion are different measurements. They shouldn't be compared as though they're the same thing.
AI-enabled calling isn't a fourth temperature. It's a way of supporting the calling process across all three.
Does cold calling still work?
Yes. But the quality of the targeting and the person making the call matter enormously.
Cold calling gives businesses a way to reach buyers who haven't filled out a form, requested a demo, or otherwise raised their hand. That's still valuable, particularly in B2B markets where the right decision-makers aren't necessarily searching for your product.
The problem is that many companies treat cold calling as a volume exercise. They buy a large list, hand reps a script, and expect enough dials to produce a predictable number of meetings.
That approach overlooks the parts of the process that make the biggest difference: reaching the right people, getting a conversation started, and handling what happens after the prospect responds.
What the research says
Gong Labs analyzed more than 300 million cold calls and reported the following figures in its 2024 research:
- Average reps connected with prospects on 5.4% of dials.
- Top-quartile reps connected on 13.3% of dials.
- Average reps booked meetings on 4.6% of conversations.
- Top reps booked meetings on 16.7% of conversations.
Those are meaningful differences. The reported meeting-booking rate among top reps was more than three times the average.
Gong is a sales technology company, and this is its own dataset rather than an independent industry-wide study. The figures are useful benchmarks, but they shouldn't be treated as guaranteed results for every campaign.
RAIN Group has also reported that 82% of buyers accept meetings with sellers who reach out to them, and that, according to buyers, 70% of sellers connect with them to generate meetings using the phone. Its published page doesn't provide a sample size or survey year alongside those figures, so they're worth treating as directional rather than definitive.
What the numbers look like as a funnel
Gong's figures can help illustrate how a cold-calling campaign moves from dials to conversations to booked meetings.
The second example combines Gong's top-quartile connect rate with its top-rep meeting-booking rate. Those figures describe separate performance groups, so they may not represent the same reps. Treat this as an illustration of the potential difference, not a forecast.
The point is that the same number of dials can produce very different outcomes depending on who is making the calls and how well the campaign is run.
A few important caveats apply to all of this.
People screen unknown numbers
Pew Research Center found that roughly eight in ten U.S. adults generally don't answer their cellphone when an unknown number calls. Its July 2020 survey covered 10,211 adults. That's a general-population finding, not a study of B2B buyers, but it helps explain why getting a live conversation can be difficult.
Poor lists make the problem worse
A Baylor University Keller Center study from November 2011 examined 50 real-estate agents who made 6,264 calls to a random set of numbers in a region they hadn't marketed to. They set 19 appointments, or roughly one for every 330 calls.
That was consumer real estate, not B2B prospecting, so it shouldn't be used as a B2B benchmark. It does illustrate how little a caller can accomplish when the list isn't targeted.
A booked meeting isn't necessarily a valuable meeting
A meeting only matters if the right person attends and the conversation meets the agreed qualification criteria.
That's why it's important to define what counts as a qualified meeting before a campaign starts. A decision-maker, company fit, budget, or another required condition might matter depending on the business.
At Intentional Outreach, qualification follows each client's criteria. Reps confirm the required information before booking and make sure the decision-maker will be on the meeting. They call the prospect the morning of the meeting to confirm, follow up by text if there's no answer, and reminders go out before the appointment. A meeting that doesn't happen or doesn't meet the agreed criteria isn't charged.
Be careful with industry averages
A lot of cold-calling statistics come from sales software vendors analyzing their own customers or platforms. That doesn't make the research useless, but it does mean you should look at the source, sample, year, and definition of success before using a number to plan your campaign.
Cold calling vs cold email
Cold calling and cold email are often treated as competing channels. In practice, they can work better together.
Cold email gives a prospect something they can read when it's convenient. A phone call gives you the opportunity to have a live conversation, ask questions, and respond to objections immediately.
Gong Labs reported in 2024 that cold calling nearly doubled email reply rates in its analysis: 3.44% compared with 1.81%, even when the call didn't connect with the prospect.
That's a vendor-reported finding, not a guarantee that adding calls will double email replies for every campaign. But it supports the idea that phone and email can reinforce one another.
The two channels also serve different purposes:
At Intentional Outreach, cold email is a separate service from the rep marketplace. It can be scoped for a client when there's a reason to warm up the market before phone outreach. We don't promise email deliverability or reply rates.
Pros and cons of cold calling
Cold calling isn't the right channel for every business. It has real advantages, but it also takes the right people, preparation, and management to work.
Cold calling can be productive, but it's not a channel you can simply switch on and ignore.
How to turn a cold call into a warm call
You don't have to choose between cold and warm outreach. A cold prospect can become a warmer prospect through relevant interactions before the call.
A simple process looks like this:
01Find a relevant signal
Look for a reason to contact the company now.
That could be a new hire, a recent funding announcement, expansion into another market, an event the prospect attended, or a referral from someone they know.
The signal should connect to the problem your product or service solves. A random company announcement isn't a reason to call.
02Make an initial touch
Depending on your campaign, you might send a short email or connect on LinkedIn before calling.
The goal isn't to manufacture familiarity. It's to give the prospect some context about who you are and why you're reaching out.
03Reference the reason you're calling
When you call, mention the signal naturally.
For example:
"I noticed you're hiring two additional dispatchers. We work with logistics teams on scheduling and coordination, so I wanted to ask how you're handling that as the team grows."
That's more useful than a generic opening because it gives the prospect something specific to respond to.
04Review calls and improve the approach
Don't assume the script is working just because reps are using it.
Listen to actual calls. Look at where prospects lose interest, which questions get useful responses, and how reps handle common objections.
Then work on one improvement at a time.
Here's the routine we suggest to our reps for each calling block:
We recommend calling blocks of 3.5 hours. In our experience, that's roughly how long it takes to book a meeting.
Is cold calling legal?
Cold calling is legal in many circumstances, but the rules depend on who you're calling, what number you're calling, how the call is made, and whether the call is recorded.
B2B calling is not automatically exempt from every telemarketing or communications rule.
The FTC and B2B calls
The FTC's guide to complying with the Telemarketing Sales Rule says "most phone calls between a telemarketer and a business are exempt from the TSR." There are exceptions, including calls to sell nondurable office or cleaning supplies and calls to business lines pitching individual employees on products or services for their own use.
That exemption is specific to the FTC's Telemarketing Sales Rule. It does not mean every B2B call is outside federal or state regulation.
The TCPA and do-not-call rules
FCC rules under the Telephone Consumer Protection Act (TCPA), at 47 CFR 64.1200, restrict certain calls to residential telephone numbers, including calls to numbers on the National Do Not Call Registry. Restrictions also apply to calling times, generally prohibiting covered calls before 8 a.m. or after 9 p.m. in the recipient's local time.
A business contact reached on a personal cellphone can raise different issues from a call to a traditional business landline. Don't assume that a number is exempt simply because the person uses it for work.
Automated calls and AI-generated voices
Federal rules impose consent requirements on certain calls to cellphones using an automatic telephone dialing system or an artificial or prerecorded voice. For covered telemarketing calls using those technologies, prior express written consent may be required.
In 2024, the FCC clarified in Declaratory Ruling FCC 24-17 that AI-generated human voices fall within the TCPA's restrictions on artificial or prerecorded voices. An AI voice calling a prospect is therefore not the same thing as a human rep using AI-assisted software during a live call.
Recording and state laws
Call-recording consent requirements vary by state. Some states require consent from all parties, while others have different rules.
Businesses should also account for applicable state calling restrictions, suppression requirements, and other rules that may apply to their campaigns.
Intentional Outreach uses calling safeguards such as do-not-call and suppression checks, calling-hour restrictions, call-attempt limits, and a recording notice on every call. Clients are responsible for the lead lists they provide, including having the right to contact the people on them. These safeguards aren't a substitute for understanding the laws that apply to your business.
If you're running campaigns across multiple states or using automated calling technology, get legal guidance before launching.
Which calling approach should you use?
The best approach depends on where your prospects are coming from and what you're trying to accomplish.
Many B2B teams use all three calling approaches. Cold outreach creates new opportunities, warm outreach builds on existing context, and hot calling responds to active demand. For a full outbound system, see the pipeline generation playbook.
The other decision is who makes the calls. You can build an internal team, outsource to an agency, or use a managed marketplace where you select and approve the reps working on your campaign. Our guide to in-house vs outsourced cold calling compares those options, and B2B cold calling services explains how ours work.
Frequently asked questions
Prior engagement. A cold prospect has had no contact with you, a warm prospect has engaged in some way (a referral, an event, a reply), and a hot prospect asked to be contacted. The temperature changes the opener and how many people you can call. It doesn't remove the need for a skilled caller.
Warm calling starts with some prior interaction or signal, but the prospect may not have explicitly requested a sales conversation. Hot calling means the prospect has asked to be contacted, such as by requesting a demo, pricing information, or a callback.
No. Gong Labs (2024) found top-quartile reps connect on 13.3% of dials and top reps book a meeting on 16.7% of conversations, against 5.4% and 4.6% for the average rep. What fails is untargeted dialing. Keep in mind that most public cold calling data comes from vendors.
Neither is universally better. Cold calling gives you a live conversation and the ability to qualify someone immediately. Cold email lets prospects review information on their own schedule. They also work together: Gong Labs (2024) found email reply rates nearly doubled (3.44% vs 1.81%) when prospects were also called, even without a live connect.
There isn't one reliable number for every campaign. Gong Labs found it takes about 19 dials for an average rep to get one conversation, and average reps book a meeting on 4.6% of conversations. Your own connect rate, target market, offer and rep performance matter more than an industry benchmark.
Generally, yes, for B2B. The FTC says most business-to-business calls are exempt from the Telemarketing Sales Rule, except calls selling nondurable office or cleaning supplies and calls pitching employees on things for their own use. Autodialed, prerecorded or AI-voice sales calls to cell phones need the called person's prior express written consent. State rules vary.
"Hi, this is Jordan with [your company]. Quick heads-up: this call is recorded for quality and training. I work with operations leaders at regional logistics companies on dispatch scheduling. Can I have 30 seconds to tell you why I called?"
Find a signal (a hire, an event, a new market), touch first with an email or a LinkedIn connection, then call and name the signal in your opener. See how to turn a cold call into a warm call.
Software supporting human reps before, during, and after calls: list checks, calling rules enforced before the dial, the script on screen, and transcription and scoring afterward for review and coaching. A person still makes the call and speaks with the prospect.
No. AI-enabled human calling uses software to support a person making a call. An AI voice agent speaks to the prospect instead of a human rep, and AI-voice sales calls need the called person's prior express written consent. See AI SDRs vs human SDRs.
Recording consent rules vary by state. Our reps read a recording notice at the start of every call, and if the prospect objects, we don't keep a copy of the recording.
Yes. You can hire an outsourced calling agency, build an internal team, or use a managed marketplace to select and approve independent reps. Whatever you choose, understand who is making the calls, how they're trained, how qualification is defined, and how performance is reviewed.
Build a calling campaign around qualified meetings.
Intentional Outreach gives B2B companies a way to select and approve phone reps, define what qualifies as a meeting, and pay for qualified meetings that actually happen.
You choose the campaign requirements and approve the reps. Our team handles the vetting process and final approval, while the platform supports campaign activity, call review, and qualification checks.
Pricing includes a $500 monthly platform fee, $250 per active rep, and a meeting price you choose between $150 and $2,500 per qualified meeting. The platform fee begins after your first rep is approved, so there's no charge just to launch the campaign, and there are no long-term contracts.