SIP Trunking and PRI Trunking
Get the most from your on-premise phone equipment and PBX. Our SIP and PRI Trunking Services provide crystal-clear calling, easy scalability, and cloud-based features to help your employees stay productive.
Ready to learn how Cox Business can help solve your challenges? Speak with one of our Specialized Trunking Representatives.
Business Continuity Protection
Real-time Demand Scaling
Manage Features Online
SIP Trunking Services
Throttle your calling capacity based on business demands with SIP Trunking. This cost-effective voice solution integrates with your existing SIP PBX system, with features that scale with you and keep your teams connected. With easy online management through MyAccount, your business is always up and running.
Low Capital Costs
Integration between your existing IP PBX and our IP network eliminates the need to install expensive gateway hardware and provides cost savings to your business.
Specify the exact number of trunks your business needs and pay for only the capacity you use.
Trunk Group Management Online
Update trunk group features, enterprise trunk features, and view trunk metrics at a glance, all from an easy to use web interface.
Display your business line on caller ID no matter which telephone or device you are using to call.
Automatically increase local call capacity during times of high demand for improved bandwidth and to control costs.
Experienced technicians ensure you have the most up-to-date trunking technology.
SIP-certified PBX Systems
Our SIP Trunking services integrate with these popular PBX systems, including Avaya, Cisco, Microsoft, Mitel, Asterisk and Grandstream. Click below for a full list of compatible systems.
PRI Trunking Services
Advanced digital features and superior connectivity make Cox Business PRI Trunking Services an ideal solution for your business. From robust remote features to system reliability and uncompromising call clarity, our service has just what you need.
Communicate with your customers from any location with all of your office phone and messaging features at your fingertips.
Business Trunk Community
Maintain mission-critical communication services in the event of a PBX service disruption.
Direct emergency responders to the exact location where a 911 call originated with this optional solution that helps you create a safer environment for employees, guests, and customers.
PRI Digital Trunking Datasheet
Installation and Support:
Trunking Services FAQs
What Is SIP Trunking?
SIP Trunking integrates with your premise-based SIP PBX (Private Branch Exchange). It’s a tailored, cost-effective voice solution with scalable features and end-user mobility options that increase productivity. SIP Trunking has the option to burst the voice trunk group, which provides temporary use of additional calling capacity as your business needs it. Plus, with business continuity features that can be managed online via MyAccount, you can keep your business running, even during service disruptions.
How Much Are Cox Business SIP Trunking plans?
Cox Business SIP trunking services offer a cost-effective solution, eliminating the need to purchase expensive gateway hardware. Contact one of our Cox Business representatives to ask about our plans and pricing.
What Is PRI Trunking?
PRI provides businesses with a physical connection to a regional telephone network. It integrates with PBX equipment, allowing businesses to have up to 100 phone numbers and 23 simultaneous voice channels. Cox PRI trunking solutions offer advanced features for an unbeatable call experience.
What Is the Difference Between SIP Trunking and VoIP?
SIP is used to transfer multimedia data (voice, text and video) over an Internet connection, VPN or physical phone network. VoIP can only send voice data on a single channel.
Are Cox Business SIP Trunking Plans Available in My Area?
Contact one of our Cox Business representatives to learn whether Cox Business SIP Trunking plans are offered in your area.
contact cox business
Let's Get In Touch
Whether you're a new or an existing customer, we're here to talk about your business needs and answer any questions you may have about our services.