Business Phone Systems
Tierzero VoIP (Hosted PBX) is the #1 cloud phone system for business.

Why Businesses Choose Business Phone Systems
'Hosted PBX’ is a telco term. Out in the real world, it’s called by many names such as business voice, business VoIP, business voice over Internet, broadband phone service, etc. Essentially, all those terms relate to the same underlying technology – which is Hosted PBX. It boasts more than 40 advanced features such as auto attendant, conferencing, hunt groups, and music-on-hold.
Everything You Get with Business Phone Systems
Enterprise-grade capabilities backed by 24/7 US-based support.
Unlimited calling
Stay connected for longer – make all the calls you need, whenever you need them with unlimited calling.
Save money monthly
Save money on your phone bill – not just this month, but every month moving forward.
Microsoft Teams Integrations
Seamlessly integrate your phone system with Microsoft Teams for unified communications and collaboration.
Auto-attendant
Auto-attendant ensures 24/7 coverage, so you'll never miss a call. Plus, you can easily customize your virtual receptionist.
Easy management
Our intuitive console makes it easy to manage complex phone systems from anywhere. Log into the console using a laptop, tablet or smart phone.
Mobile app
VoIP Phone System works on a mobile app. Now you have access to all the same features on your desk phone, through your cell phone, no matter where you are.
Get Started in 3 Simple Steps
No complexity. No hassle. Just reliable service.
Tell Us Your Needs
Share your requirements and we'll design a custom solution for your business.
We Handle Setup
Our expert team manages installation and configuration—no disruption to your operations.
Enjoy 24/7 Support
Go live with confidence knowing our US-based team is always just a call away.
Common Questions About Business Phone Systems
Get answers to the most frequently asked questions. Still need help?
Call us at +1 (213) 784-1400Ready to Get Started with Business Phone Systems?
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+1 (213) 784-1400See how businesses like yours use Business Phone Systems
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