Add unlimited SIP users to your phone system at no extra cost.

With Telzio, you don't have to worry about additional costs as you add users. Enable your people to connect to all their devices with one simple login.

An illustration displaying a desk phone and a mobile phone both connected to the user account.

What can I do with User Extensions?

  • Log into the mobile app, IP phones, and softphones with a single login.
  • Make and receive calls on your Telzio extension from any location.
  • Dramatically reduce costs by eliminating individual user fees.

Telzio users have no boundaries.

Using the same extension on multiple different devices is useful for employees who use both a desk phone and their cell phone, and want to have all calls and messages on both devices synced. Being logged into multiple devices also allows calls to find you, whether you're at your desk, or on the road.

Frequently Asked Questions

  • What kind of devices can I use with my Extension?
    You can use your extension with our mobile app, IP phone, and softphones. Visit our support pages to learn more about the different types of IP phones we recommend.

Business Phone System Features Overview