Quick Answer — Call forwarding sends an incoming call to a different phone number instead of the one that was dialed.

On older phone lines, dialing *72 and the destination number turns it on, and *73 turns it off.

Internet-based phone systems do the same thing inside an app.

Somewhere out there, a phone is ringing in an empty office and nobody has any idea what to do about it.

Call forwarding is the fix, and despite the slightly technical name, the idea behind it is simple.

A call comes in to one phone, and forwarding tells it to ring somewhere else instead.

That’s the whole concept. A call meant for the front desk can ring on a manager’s cell phone.

A call for a salesperson who’s on vacation can ring on a coworker’s line. Nothing about it is complicated, at least not until it’s time to decide when to use it and how to turn it off again.

This guide starts from zero. It explains what call forwarding is, walks through the everyday situations where it helps, shows the actual buttons to press on a normal phone line, and ends with the reason a lot of businesses stop bothering with it entirely.

What Is Call Forwarding, in Plain Terms?

Call forwarding is a feature built into phone systems that redirects an incoming call to a different number. Think of it like a mail-forwarding order at the post office, except it’s for phone calls and it switches on in seconds.

There are two basic versions, and the names sound fancier than they are. “Unconditional” forwarding means every single call gets sent to the new number, no exceptions.

“Conditional” forwarding means calls only get sent under certain conditions, such as when the line is already busy or when nobody picks up after a few rings.

How the forwarding actually happens depends on the phone.

On older landline phones and many cell phones, it’s done by dialing a short code, which is just a star symbol and a couple of numbers typed in like a phone number.

On newer systems that run calls over the internet, a setup usually called VoIP or a cloud phone system, forwarding is a setting inside an app or a website.

VoIP simply means the calls travel over an internet connection instead of old telephone wires. Same result, far less to remember.

How Do Businesses Forward Calls to a Cell Phone After Hours?

After-hours forwarding sends office calls to a chosen cell phone once everyone has gone home, so an urgent call still reaches a real person instead of ringing into an empty room.

It’s the most common reason to forward a call, and also the one most likely to go sideways.

Setting it up isn’t hard. On an older line, someone dials the forwarding code and the cell number before leaving for the day.

On an internet-based system, the office can set a rule that forwards calls automatically at a certain time, so nobody has to remember anything.

The part that trips people up isn’t the setup, it’s the boundaries.

Once the main office line is pointed at a personal cell phone, that phone rings for everything, including wrong numbers and robocalls, until someone turns forwarding back off.

A few simple habits help. Only forward to a phone whose owner has agreed to take the calls.

Send routine calls to voicemail instead of the cell when possible. And make sure forwarding gets switched off the next morning.

A sales robocall at nine on a Saturday night is a rough way to learn that last one.

How Should Calls Be Forwarded to a Coworker During Vacation?

Vacation forwarding sends an absent employee’s calls to a coworker who’s covering for them, so callers reach a real person instead of a voicemail box that quietly fills up for two weeks.

Done right, the customer never even realizes the usual contact is away.

How it’s done depends on the phone. On a desk phone, the person leaving forwards their extension, which is just their personal phone number inside the office, to a coworker’s extension before they go.

On an internet-based system, a manager can set that forward from a computer, which is handy when the person on vacation forgot to do it and is now unreachable on a beach somewhere.

A few plain steps make it work. The coworker taking the calls should actually know they’re covering, ideally with a short note about which customers might call.

A quick greeting that explains the regular person is out helps callers too. And the forward needs an end date, because a “temporary” vacation forward that nobody turns off has a way of becoming permanent.

That’s how one person accidentally ends up answering someone else’s calls for a month.

What Happens When the Office Closes Unexpectedly?

Emergency forwarding sends incoming calls somewhere else when a business shuts down with no warning, like during a snowstorm, a power outage, or a pipe that decides to burst on a Monday.

The goal is simple.

Customers keep calling, so somebody needs to keep answering.

This is where old-fashioned forwarding shows its weakness. Turning on a star code means standing at the office phone, which is a problem when nobody can get into the office.

If the forwarding wasn’t already set up ahead of time, the calls just ring into an empty building, and callers assume the business disappeared.

A cloud-based 3CX phone system handles this much better. Because the forwarding settings live on the internet rather than on a physical phone, a manager can send all the calls somewhere else from a laptop or phone, from anywhere with a connection.

Calls can go to cell phones or to a recorded message explaining the closure, with no need to reach the building at all.

How to Set Up Call Forwarding on a Regular Phone Line

Setting up forwarding on a standard phone line comes down to typing a few short codes.

A code here is just a star symbol followed by two numbers, dialed exactly like a phone number.

These work on most regular phone lines in the United States and Canada, though some phone companies use slightly different codes.

After dialing the “on” code and the destination number, the line usually rings once by itself to confirm forwarding is active. From that point on, calls redirect until someone dials the “off” code. The recurring theme, and the recurring headache, is that all of it depends on a human remembering to turn it on and then turn it off.

Call Forwarding Situations at a Glance

Different situations call for different approaches. Here’s how the common ones line up.

The pattern is hard to miss. Manual star-code forwarding works, but it leans on someone’s memory and on physical access to a phone, which are exactly the things that fail during the moments forwarding is supposed to cover.

Why Many Businesses Stop Forwarding Calls Altogether

Here’s the thing most businesses eventually figure out. Forwarding calls was never really the goal. The goal was just to make sure the right person answers, wherever that person happens to be.

Forwarding is the clumsy workaround that old phone systems left behind.

TechmodeGO gets rid of the workaround. It runs on private, triple-redundant AWS infrastructure, which is a plain way of saying the phone system lives on dedicated, backed-up internet servers, with 99.999% uptime.

Instead of dialing codes, calls simply follow employees to a desk phone, a laptop, or a mobile app.

After-hours schedules, vacation coverage, and emergency reroutes get set up once and then run on their own, including from anywhere with an internet connection when the office can’t be reached.

The mobile app is where forwarding basically disappears.

The 3CX and Techmode apps turn a regular smartphone into a full extension of the office phone system, so employees make and take calls on the business number right from their own phones.

An after-hours call rings the on-call person directly, and when they call back, the customer still sees the business number instead of a personal one.

There’s nothing to forward when the office line already lives in everyone’s pocket.

The other difference shows up after the sale. Every TechmodeGO setup includes Premier Launch, a hands-on installation run by a dedicated project manager and an install team that tests the whole call setup before it goes live.

After that, Concierge Support takes over, staffed by U.S.-based technicians, not offshore call centers, available 24/7, who actually know each customer’s system.

That’s a big part of why Techmode holds an NPS of 85.7, a common customer-satisfaction score, across 948 post-support surveys, against an industry benchmark of roughly 31, along with an A+ BBB rating and more than 20 years in business communications.

Call forwarding made sense back when phones were bolted to the wall. These days a phone system can just handle it, quietly, without anyone touching a star code.

Frequently Asked Questions

What is call forwarding in simple terms?

Call forwarding is a phone feature that sends an incoming call to a different number than the one that was dialed. For example, a call to the office can be set to ring on a cell phone or a coworker’s line instead. It comes in two forms: forwarding every call, or forwarding only when a line is busy or goes unanswered.

How does someone forward calls on a normal phone?

On most regular phone lines and cell phones, forwarding is turned on by dialing *72 followed by the number that should ring, and turned off by dialing *73. A star code is just a star symbol and two numbers, dialed like a phone number. On internet-based phone systems, forwarding is a setting inside an app instead of a dialed code.

How is call forwarding turned off?

On most phone lines and cell phones, dialing *73 turns off forwarding and sends calls back to ringing normally. On internet-based systems, forwarding is switched off inside the app or admin settings, and scheduled forwards can be set to end on their own so nobody has to remember to undo them.

Is call forwarding a good idea for a business?

It works fine for the occasional situation, but it depends on someone remembering to turn it on and off, which tends to fail after hours and during surprise closures. Business phone systems that run over the internet replace manual forwarding with automatic rules, so calls reach the right person without anyone dialing a code.

Can calls still be answered if the office closes suddenly?

Yes, but the method matters. Old-fashioned forwarding needs someone standing at the office phone, which is often impossible in an emergency. An internet-based phone system lets a manager send every call somewhere else from a laptop or phone, reaching cell phones or a recorded message without anyone entering the building.

New to all this and not sure where to start? See how TechmodeGO handles call routing automatically, or take a look at cloud phone systems built for distributed teams. To see how a new setup goes live without the usual headaches, check out Premier Launch.