What Is Call Diversion? How to Redirect Your Incoming Calls

Call diversion is a phone feature that redirects an incoming call to a different number, extension, voicemail, or messaging system on its own, so a call never simply goes unanswered. It's most often used when a line is busy, a call goes unanswered after a set number of rings, or a business wants coverage outside normal hours. "Call diversion" and "call forwarding" describe the same underlying feature; which term you'll hear depends more on where you are and who's talking than on any real difference in how it works. The sections below cover how it works, how it compares to call forwarding specifically, and where basic diversion stops being enough for a business fielding high call volume, like a dealership service department.

When calling your business, your customers expect immediate help. Most callers won't wait longer than 1 minute for an answer.

But staffing your organization to promptly answer every incoming call, no matter the time of day, would likely put you out of business.

Even if you can afford a full-time receptionist, what happens if they take a vacation, get sick or simply can't get to the phone?

Setting up call diversion is an easy way to prevent unanswered calls and lost business when you step away from the phone.

What Is Call Diversion?

Call diversion, also known as call forwarding, is a feature that allows a phone owner to forward or redirect incoming calls to a landline, cell phone, voicemail message or a text messaging system.

This feature prevents callers from going to voicemail and increases your company's availability to callers.

How Does Call Diversion Work?

The goal of call diversion is to prevent sending callers to voicemail and redirect them to an open line instead. You can set up diversion criteria to work in specific business instances.

Here are a few ways to use call diversion:

• Divert unanswered calls: Want to avoid the black hole of business voicemail? Divert unanswered calls to a mobile phone or separate line so callers have another chance to reach your business.

• Divert calls when the line is busy: Avoid giving callers the busy signal by diverting calls to another phone number when the line is occupied.

• Enable fixed call diversion: Set up diversion during certain times (like after hours) or after a preset number of rings or seconds.

• Divert incoming calls to text messaging: You don't have to send all incoming calls to another phone number. Tools like Numa step in to give callers the option to text your business when you're busy or can't get to the phone.

Call Diversion vs. Call Forwarding

The short answer: they're the same feature. Both terms describe a telephony function that redirects an incoming call to another destination, and telecom standards documentation generally treats "diversion" as the broader umbrella term, covering specific conditions like a busy line, no answer, or an unreachable number, while "forwarding" is the more common everyday term for the same thing, especially in the US.

In practice, the distinction that actually matters isn't which word gets used. It's which condition triggers the redirect: unconditional diversion moves every call regardless of what's happening on the primary line, while conditional diversion only kicks in for a specific situation, a busy signal, no answer after a set number of rings, or a line that's unreachable. Whether a business calls this "call diversion" or "call forwarding" in its own documentation, the actual setup decision is about which of those conditions to configure, not about choosing between two different technologies.

How to Enable Call Diversion

Depending on your small business phone system, you can take a few routes to enable call diversion. Most traditional carriers offer it as a standard feature with your business account, activated either through account settings or a simple feature code.

Newer organizations are also popping up with additional call diversion features. Numa, for example, allows you to divert incoming calls to text messaging.

Best of all, you don't need a physical person to respond to incoming texts. Instead, the Numa virtual text assistant answers incoming requests for you or routes them to the correct person or department.

Providers like CallHippo and eVoice also offer the option to forward calls to one or more phone numbers.

Why Businesses Use Call Diversion

Voicemail is the wasteland of business communication. 80% of people will hang up before leaving a message, and only 18% of people listen to voicemails from unknown numbers. Call diversion squashes the futile game of phone tag so everyone wins.

Here are a few ways call diversion can improve your operations:

• Avoid sending calls to voicemail and increase your phone availability. A staggering 62% of calls to businesses go unanswered. Call diversion allows you to answer more calls and generate more business as a result.

• Receive calls on your cell phone after hours. Want to stay accessible to callers even after you leave the office? Redirect business phone calls to your cell so callers can reach you anywhere.

• Personalize interactions even when you can't pick up the phone. You can't rely on voicemail to capture customers. AI-powered SMS assistants like Numa can elevate your customer experience when you're unavailable to answer the phone.

• Manage variable call volume. Not every business can afford a pricey answering service. Divert calls to text messaging to scale your answering resources up or down as needed.

• Rescue calls when customers would prefer to text. By offering SMS-savvy callers the option to text your business, you can improve their experience (and your reputation).

When Dealerships Need Smarter Call Handling

Basic call diversion solves a real problem for a small operation fielding a manageable volume of calls: don't let a call disappear into voicemail, get it to a line where someone can pick up. A dealership service department runs into that problem at a different scale entirely. Service departments routinely miss 300 to 500 calls a week, and a meaningful share of that volume concentrates during peak hours, when every advisor is already on another line and diverting the call just moves it to a different busy person instead of actually answering it.

This is where diverting a call to another phone number stops being enough on its own. A service department needs the diverted call, or the text it turns into, to arrive with context: which customer is calling, what repair order they're asking about, whether they already have an appointment on the books. Plain call diversion moves the call. It doesn't carry any of that information with it, which means whoever picks up the diverted call is often starting the conversation from zero anyway.

How Numa Helps Reduce Missed Calls

Numa gives incoming callers the option to text your business, so you can answer more calls without the extra manpower, and for a dealership specifically, it does this while reading live data instead of just moving the call somewhere else. Considering that 75% of Millennials and Gen Zers would rather text than talk over the phone, SMS should be core to your strategy regardless of what kind of business you're running.

The AI engine can answer customer questions immediately, compared to voicemail, which can take hours to respond, and for a repair status question specifically, it can check the actual repair order rather than just taking a message for someone to call back about later.

Numa works with your existing landline phone and gives you one streamlined view of communication from the Numa app.

In 15 minutes, you can divert incoming calls to your existing business landline to text messaging and drastically improve the customer experience.

Want to see call diversion in action? Schedule your free Numa demo today.