🎉 Announcement: OnSIP has won its fourth consecutive Excellence in Customer Service Award 🎉

The VoIP phone system that works where you do

Get the scalable business phone system that doesn’t tie you to an office. Start making calls today, then upgrade to a plan that’s right for you.

Streamline your business communications

A complete phone system replacement

OnSIP hosted PBX takes just minutes to set up, and you can even keep your phone number. Enjoy all the features of a traditional phone system, including conference bridges, attendant menus, ring groups & ACD queues, and BHRs.

Learn More

Calls on any device

With the free OnSIP app—available on Windows, Mac, and other operating systems—you can use your preferred device to make HD voice and video calls, view coworker presence, dial contacts with a click, and manage your voicemails.

Learn More

Video conferencing

Hold company-wide conference calls to keep your daily standups going even when you're not in the office. Simply use a unique, secure conference link to join a meeting right in your browser—no downloads required.

Learn More

Award-winning support

Our US-based support team is here for you every step of the way. We'll guide you through setup, help you troubleshoot, and show you how to get the most out of our products. After all, communication is what we do best!

Learn More

Communication solutions resources

How to Set Up a VoIP Phone System for the Home Office

Read the article

The Remote Work Cloud Tech Stack

Read the article

How to Look Good During an Online Video Call

Read the article

What OnSIP customers say

Lucas Acosta


CEO, Foojee

I loved OnSIP's approach of offering an easy-to-use cloud service that works with any SIP phone. ... It’s clear they stay focused on what customers want.

Brian Frias


Technology Manager, Masterfit Enterprises

I congratulate the ones that do the hiring [at OnSIP] for finding a team of awesome and knowledgeable employees.

Erin Hendricks


Administrative Coordinator, Gauge Interactive

With every call, they’ve been patient, friendly, and incredibly helpful ... I would recommend OnSIP based on their customer service alone.

Anoush D’Orville


President, ADVisory

You have to search long and hard for a service that comes near to OnSIP in terms of friendly and responsive support, pricing, and reliability.

Trusted by companies big and small since 2004