Virtual Phone Extensions

Give customers and staff easy access to each employee or department with 4-digit extensions from Tresta.

Virtual Phone Extensions
Clouds

Phone extensions to fit your business needs.

With Tresta’s virtual phone extensions, callers can easily reach the right person on the first try.

Get customizable extension options.

With Tresta, you can individually tailor your extensions to your business needs. Every extension comes with simple call forwarding, virtual voicemail, and customizable message delivery settings.

Get customizable extension options.

Give your business the right look and feel.

For a small business, virtual phone extensions offer direct lines of contact to help you sound professional and polished. For large businesses, extensions help callers find precisely the right person or department, resulting in a better customer experience. No matter where employees are located, extensions make them easy to reach.

Give your business the right look and feel.

Give customers a direct line to your business.

Advertising one main number is a smart choice for your business and your brand. When you add custom extensions, you can keep your brand strong while giving customers the convenience of a direct line. You can add extensions any time with Tresta, making it the perfect fit for a growing business.

Give customers a direct line to your business.

Why use phone extensions from Tresta?

Check out some of the top reasons our customers love using extensions on their Tresta virtual phones.

Flexible virtual phone extensions.

With Tresta, easily add or remove an extension whenever you need, right from the Tresta web app. Change extensions on the fly to keep your business organized and create a great customer experience.

Flexible virtual phone extensions.

Extensions that grow with your business.

With 9,000 four-digit extension possibilities, Tresta’s virtual phone extensions scale up with your business. And with other features such as customizable greetings for each extension and unlimited voicemail storage, your business phone system is already set up for growth!

Extensions that grow with your business.

Every feature for one low price.

With Tresta, no contracts or “premium plans” are required — you get every single Tresta feature for one flat rate. One low price for call recording, call analytics, call routing, auto attendants, call schedules, extensions, custom groups, voicemail, and more.

Every feature for one low price.

No special equipment required.

Turn your cell phone into a business phone (without exposing your personal number) with the Tresta mobile app. Tresta works with your existing phone system—no need for special hardware or new equipment—and you can always manage your phone service through the web app.

No special equipment required.

What can I do with phone system extensions from Tresta?

Create smooth call flows.

Add direct lines to departments or specific people to create a smooth call flow for external and internal calls. Extensions can be configured for users, departments, voicemail boxes and even forwarding numbers! Add and remove extensions at any time to meet your needs.

Create smooth call flows.

Offer better customer support.

With direct extensions for every employee and department, your callers will be able to get to their desired destination quickly and easily from your main company phone number.

Get 24/7/365 customer support.

Retain IT independence.

When you use Tresta’s virtual phone extensions, you can remain IT independent. Tresta prides itself on being easy to use - no IT guy required here!

Retain IT independence.

FAQs: Phone Extensions

Read on to learn the answers to common questions about Tresta's phone system extensions, or contact us for more information.

How many virtual business extensions can I add?

With Tresta, you have up to 9,000 extensions available to assign. Add as many extensions as you need to keep things running smoothly!

Can I create 2-digit or 3-digit extensions?

No. Extensions must be four digits. 1-999 are excluded from the numbering scheme and cannot be assigned as extensions.

Is it complicated to set up virtual phone extensions?

Not at all! Tresta features can be added, removed, or modified easily through the web app. They require no IT assistance or additional hardware.

Are there any added fees to use extensions?

No! All Tresta features (including extensions) are available when you pay the monthly per user rate.

How do I share my extension with another person?

Your extension will come in the form of a four-digit number. If someone wants to be in direct contact with you, simply provide the main number and your extension. Once the caller dials into the main number, he or she can simply bypass the call menu and enter your extension number.

Is there a penalty for adding/deleting extensions?

Never. Tresta offers complete flexibility for you to do what you need for your company. You’ll never be penalized for the number of times or the frequency at which you add/delete extensions.

Can I record my own greeting on my extension?

Yes. Each extension has the option to record a personalized greeting or use one of Tresta’s pre-recorded professional greetings.

I have other questions. Who can help me?

If you have additional questions, we'd love to talk with you. To speak with a product specialist, call (844) 2-TRESTA or use the chat icon in the lower right-hand corner — we're available 24/7.