VoIP Phone Lines (SIP Trunks)
Connect your existing phone system to the cloud with SIP trunking. Lower costs, more features.

Why Businesses Choose VoIP Phone Lines (SIP Trunks)
Unified Communications brings high-definition video chat, screen sharing, messaging, and more. You also have the ability to use these features from anywhere and on any device.
We think so, especially since 2020 forced us to change how we do business. We’ve all had to interact on Zoom, Microsoft Teams and Skype etc. to varying degrees of success or frustration depending. Tierzero’s ‘Unified Communications’ package offers face-to-face video conferencing inside your OWN company video network. Any client or vendor can join your video meeting by invitation in groups of any size - with screen sharing and chat tools. By using your own video network instead of the ‘free’ public offerings, you get the security of operating behind a firewall with far lower risk of infiltration. Furthermore, the managed care aspect from Tierzero Customer Care reduces risk of warbled voice or frozen video screens. Adding your own video chat network through Tierzero Unified Communications leaves you free to do business with fewer interruptions. Additionally, for those customers using
Everything You Get with VoIP Phone Lines (SIP Trunks)
Enterprise-grade capabilities backed by 24/7 US-based support.
Works with your PBX
Keep your existing phone system and connect it to our network.
Lower costs
Eliminate expensive PRI lines and reduce your phone bill.
Flexible capacity
Add or remove lines as your business needs change.
Unified communications
Integrate voice, video, and messaging across your organization.
Disaster recovery
Automatic failover to keep your phones working during outages.
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.
, QoS on video chat is ‘managed’ via a prioritization protocol overseen by Tierzero’s care team giving you the same reliable no-lag service in video that you get with voice. SD-WAN is a software technology that manages all components of a communications network round the clock. It’s like a powerful, all-seeing brain that prevents network issues before they become problems. It is worth investigating by any business with mission critical applications running over their network.
solution. Later, if you decide to upgrade to Unified Communications, just give us a call and we will set you up in no time. There is no fuss or additional equipment to buy.
Get a first-hand look at Tierzero's Unified Communications features and see for yourself how it can improve communications and increase productivity in your organization.
Common Questions About VoIP Phone Lines (SIP Trunks)
Get answers to the most frequently asked questions. Still need help?
Call us at +1 (213) 784-1400Ready to Get Started with VoIP Phone Lines (SIP Trunks)?
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