SIP Trunking

Modernize and add on-demand scale to your existing business phone

Upgrade your existing PBX to support on-demand scaling, best-in-class call quality, and ensure your network grows as you grow.

Why Choose Momentum?

Communications consistent with your company's needs

Stay operational during high-demand periods and support long-term growth with Momentum’s SIP trunking solution. Our solution is compatible with most certified PBX vendors, including Avaya, Mitel, Cisco, ShoreTel, and Panasonic — offering:

Trusted by 30,000+ locations globally

What Can Momentum Do?

Enable flexible and more reliable communication

E911 support

Ensure your organization is prepared for emergencies and compliant with regulations with full 911 and E911 functionality. 

Trusted infrastructure

Momentum’s carrier-grade, geo-redundant network is trusted by corporations and carriers located throughout the world.

High-touch support

Take control of your communications with 24×7, on-demand high-touch support from our team of SIP trunking experts. 

Designed for reliability

Backed by our global network, our SIP trunking service is considerably more reliable than most primary rate interfaces (PRIs).

Your one-stop shop

Momentum offers a comprehensive portfolio of synergistic services, including SD-WAN, Cloud Voice, Teams Phone, and more. 

Global scalability

Momentum owns the entirety of our global network and has the capacity to install our own circuits, enabling unprecedented coverage.  

The Momentum Difference

Breathe new life into your legacy PBX infrastructure

Create a scalable, easy-to-manage communications network with our flexible SIP trunking service. Momentum will provide you with a digital service to support all your network routing needs, with benefits that include:


Your partner in business collaboration

Momentum empowers your business with the tools it needs to thrive. Enhance productivity and drive growth with custom solutions for connectivity, communication, engagement, and more. Experience the Momentum Difference firsthand. 

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related products

Explore Momentum's other collaboration solutions

Interested in exploring other ways your business can optimize its PBX and Teams deployments? Have a look at some of our other offerings below. 

Teams Phone

Integrate enterprise-grade PBX functionality into Microsoft Teams with a direct connection to the PSTN. 

Cloud Voice

Modernize your communications infrastructure with a feature-rich cloud solution.

Operator Connect

Transform Microsoft Teams into a full-featured business phone solution with simplified management.


Hear from our customers


Maximize the value of your PBX investment with Momentum

Enhance your business phone system with a SIP trunk that’s built to scale while accessing a diverse portfolio of additional communications and connectivity services.

Momentum Telecom