Virtual Phone Extensions

Give callers easy access to your employees and departments with 4-digit extensions from Tresta.

Virtual Phone Extensions
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Phone extensions to fit your business needs.

With extensions, callers can easily reach any person or department by dialing their 4-digit extension.

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.

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.

Make changes to your extensions at any time.

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.

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.