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How to Forward Calls to Any Phone Number

Call forwarding is a feature common to just about every phone system, and Tresta is no different. It’s simple and useful, and there’s a number of different ways to use it to make your life easier, especially when pertaining to business calls.

What you may not know, however, is how call forwarding can work in conjunction with other powerful features to help your business get more out of your phone system. In this guide, we’ll explain what call forwarding is, different ways to use it, and how to forward calls to any phone number. Here’s what we’ll cover:

What is Call Forwarding?

Essentially, call forwarding is the ability to redirect calls placed to one phone number to a different phone number. Generally, there are two types available:

  1. Immediate Call Forwarding: Calls redirect to the forwarding number immediately without first ringing to the number that was dialed.
  2. Rollover Call Forwarding: Calls first ring to the number that was dialed, then redirect to the forwarding number only if the call isn’t answered.

From the caller’s perspective, there’s never any indication that the call is being forwarded anywhere other than the number they dialed. Call forwarding happens on the back-end making for a seamless phone experience for callers.

How Can Call Forwarding be Useful?

Call forwarding adds flexibility and dynamism to your business’ phone infrastructure. It allows you to always get callers to the right person, and cuts down on transfer instances. It helps streamline phone procedures, no matter where your team is located. Here are some of the most impactful ways you can use call forwarding:

Separate Your Business & Personal Phones

Get a business phone number from a virtual phone system like Tresta and receive business calls and texts on your mobile phone (when you want to).

Forward Your Calls After-Hours

Leaving the office for the day? Set your calls to forward to your business voicemail or your after-hours answering service.

Get More Phone Calls Answered, Quicker

Want phone calls to always have the quickest possible answer? Set your calls to forward to a different destination if it hasn’t been answered after a set amount of time.

Call forwarding enables you to receive calls where you want them and when you want them – so you can provide great caller experiences without being tied to a static device.

How to Forward Calls

If you’re wondering how to forward calls, the good news is it’s easier than you think. But there are a couple of different ways to do so:  

1. Phone Carrier

Most phone carriers, landline, and mobile alike have a call forwarding feature. However, there are often costs associated with using it and the ways to enable it to vary between carriers.

On an iPhone, for example, call forwarding is enabled right from the Settings menu. In most cases, a carrier’s call forwarding feature is enabled by dialing a three-digit code followed by the ten-digit forwarding number. It might look something like *72+(850)-123-4567. Turning it off is usually as simple as dialing another three-digit code.

2. Virtual Phone System

If you’re a business looking for more functionality than what’s available from your carrier, there are plenty of virtual phone systems designed to do just that.

Some are meant strictly for the purpose of forwarding calls and enable you to do so without dialing a code. Others, like Tresta, have additional features such as business texting, auto attendants, call recording, and the ability to only forward calls during certain days or times.

How to Forward Calls With Tresta

Tresta is a simple, flexible, and intuitive call forwarding solution. Choose a new business number or bring your own – then set calls made to your business phone number to forward to the device you’re already using or send them elsewhere based on your configuration settings.

Within Tresta’s web app, you can set calls to forward to:

Auto Attendant

Every Tresta system includes the option to add and customize auto attendants. Create custom greetings for your business to welcome callers and to help them get to the proper destination, “Press 1 for Sales, Press 2 for Support…”. Within an auto attendant, you then configure forwarding for each menu option.

Forwarding Number

Forwarding numbers in your Tresta system refer to any phone number that you forward to outside of your organization like an after-hours answering service or an outsourced accounting firm. For example, if you have an auto attendant and a caller selects the option to speak with accounting, they would then be forwarded to the forwarding number you designated for “Accounting”.


Every Tresta system defaults to sending a caller to your business voicemail if you don’t answer. But with Tresta’s call routing feature, you can also send certain types of calls directly to voicemail or forward calls to other destinations prior to sending them to voicemail. You’re in complete control.

Custom Audio File

Not only are custom audio files used to greet callers in your auto attendant, but you can forward calls directly to audio files, too. Need help recording a professional-sounding greeting for your business? Contact us with your pre-written script, and a member of our voice talent team will be happy to record it for you for free.

Users & Ring Groups

As the admin on your Tresta account, you have the ability to add user accounts for members of your team. Each user comes with a phone number and extension that will default to forwarding to their device. In addition, you can create groups of users call ring groups. Calls forward to ring groups ensure a fast answer by ringing to all users in the group simultaneously.


Tresta’s schedule feature enables you to forward calls wherever you want based on the schedule you create. Simply set up a schedule in our web app and choose to have your phone number forwarded to the schedule. For example, your “Office Hours” schedule could look something like this:

  • Weekdays from 9:00 to noon: Business calls forward to your smartphone.
  • Noon to 1:30: Forward to voicemail while you’re at lunch.
  • 1:30 to 5:00: Back to your cell phone.
  • After hours and on weekends: Send them to voicemail, an answering service, or wherever you want your after-hours calls.  

To take it a step further, Tresta enables you to create multiple levels of forwarding using any of the options above.

Let’s say someone calls your main business number and reaches your auto attendant. They opt to speak with you, and according to your schedule, the call is forwarded to your smartphone. But you’re on another call and unable to answer. You’ve set up an additional level of call routing that sends callers to your assistant if you don’t answer within 30 seconds. Your assistant isn’t available, so the call goes to a specific voicemail box that you’re all subscribed to. You then receive an alert with the voicemail message so you can quickly follow up with the caller at your next convenience.

Tresta’s smart routing feature comes with a truly unlimited amount of call forwarding options. And with our intuitive web app, it’s super simple to use – but if you have questions about forwarding options, our support team is available to configure your system exactly the way you want it.

There are several reasons you’d need to forward calls for your business. And, the dynamic call forwarding functionality you get with a virtual phone system like Tresta improves your business communication while helping you achieve work-life balance.

Plus, it’s incredibly customizable and can be configured to meet your specific business needs. The options are nearly limitless and making changes to an existing schedule or other forwarding option can be done instantly with just a few clicks in our intuitive web app.

Want to learn more about how to forward calls for your business with Tresta? Contact us at 844-2-TRESTA or get started now with a 30 day free trial.