There are two primary SIP Trunking use cases for communication service providers. The first use case is providing SIP trunks to enterprises, continues to be a fastest growing market opportunity. SIP trunk penetration rates are growing rapidly in every region of the world. However, there are still tens of millions of lines to convert and competition for existing deployments is growing. That’s why Ribbon is investing in differentiated SIP trunking solutions enabling providers to stand out in a crowded market and help them reduce margin erosion. The second use case is providing SIP trunks for core network interconnection with IP peering partners.  This market is more advanced than that for SIP trunking in the access domain, but nonetheless it remains a substantial business opportunity as IP network interconnections continue to grow.  For this use case, the key is to seamlessly delilver high volume, secure, reliable IP connectivity at a cost point that make it profitable to interconnect with multiple IP peers.

Ribbon offers multiple SIP trunking solution options, designed to work independently or in concert with each other, depending on a provider’s market requirements and existing platform investments. Deploy one or multiple solutions including:

  • Core SIP security and interworking
  • Enterprise edge security and interoperability
  • Intelligent session control and routing
  • Microsoft-certified SBCs for Teams and Skype for Business
  • Value-added services for Teams and Skype deployments

Secure Communication Solutions


Intelligent Edge

Ribbon's portfolio eases enterprise migration to cloud communications


Ribbon Connect for Webex

Accelerating Cloud Connect for Webex Calling Deployments


Ribbon Connect for Zoom

The fastest way to offer telecom services to Zoom Phone customers


SIP Trunking NNI

Ribbon’s NNI solution  enables high-scale IP peering with seamless interoperability, security, and QoS assurance


SIP Trunking Access

Ribbon's Session Border Controllers (SBCs) ensure SIP Trunking service success with market-leading security

Watch our Webinar on Teams Direct Routing for CSPs

With Industry Analyst Diane Myers

Leverage Existing Ribbon Investments

Service providers with existing Ribbon investments in call controllers, application servers, policy & routing engines, SBCs, gateways or enterprise edge devices can leverage these to create new SIP trunking offers. They can also add new elements to enhance the breadth or depth of existing services.

SIP Trunking - Network-to-Network Interconnection

Ribbon proven carrier-class session border controllers (SBCs) and policy and routing engine  (PSX) enables high-scale IP peering with seamless interoperability, security, and QoS assurance for voice and multimedia services.  Learn more about how service providers leverage Ribbon’s SIP Trunking - NNI solution to optimize  IP peering.

SIP Trunking Access

Ribbon’s session border controllers (SBCs) are the foundation for secure VoIP connectivity between an enterprise and a service provider. The same platforms can resolve SIP interoperability issues and transcode media. Learn more about the features and benefits of the Ribbon SIP Trunking - Access solution.

SIP Trunking For Microsoft Teams Calling

Enterprises wanting to add Microsoft Teams Calling capabilities can choose to use Microsoft Calling Plans or they can procure their own SIP trunk solution. Service providers can tap into this market by offering SIP trunking to connect to the Microsoft Phone System through Direct Routing.

Leverage an Intelligent Edge to Reduce Costs

An EdgeMarc Intelligent Edge eSBC can greatly improve installation efficiencies for SIP trunking implementations. Ribbon has fully tested and certified the EdgeMarc with all leading IP-PBX and IP endpoint manufacturers, ensuring interoperability. Automated provisioning capabilities within the EdgeView Service Control Center allow a device to pull down its specific configuration, reducing the steps an installer needs to implement. And of course, an EdgeMarc has the security features needed for successful SIP trunking implementations, such as topology hiding and DDoS protection.

Extending the Value of SIP Trunks With New Services

Ribbon’s Application Server (AS), deployed standalone or in concert with a C20 softswitch acts as a SIP registrar and feature server. Leverage Ribbon’s AS to add simultaneous ring, find me follow-me, centralized directory or enterprise-wide dial plans to a SIP trunking deployment. Providers can also use the AS and C20 to provide additional telephony services for Skype for Business and Lync 2013 deployments.

Enabling Cloud Connect for Webex Calling

Available globally with direct peering to the Webex Cloud, Ribbon provides both the certified carrier-grade SBCs and expertise to enable service providers to offer their telecom services for Webex Calling. Ribbon SBCs encrypt and secure all the media and signaling traffic as well as normalize traffic to ensure interoperability.

Improve UCaaS Profit Margins