Ribbon's SIP Trunking solutions are supporting millions of SIP trunks, across the globe. Our portfolio allows you to choose highly scalable and redundant solutions for the access network as well as cost-effective options to extend SIP trunking onto the enterprise premises as a managed service.

The starting point for SIP Trunking is a Session Border Controller for secure VoIP connectivity between the enterprise and the Service Provider, but can be so much more. Adding in the ability to provide session management as a dynamic SIP registrar, policy control, and routing optimization enriches the offer.

With our Fixed Network Transformation portfolio, including our C20 Softswitch and Application Server (AS) we can further enable service providers to modernize their legacy infrastructure, offer VoIP connectivity to PSTN, and also provides them an opportunity to offer new ways to deliver advanced hosted overlay services (over PBX) such as mobility, centralized voice mail, meet me conferencing, and other richness of the unified communication services offerings to their enterprise customer base.

Scale with Turn-key Hardware or Software-only Solutions

With a wide range of solution options -- turn-key hardware, fully virtualized software or even SIP Trunking as a Service from the cloud, you can choose the scale that matches any deployment requirements, from less than 100 concurrent sessions up to 100’s of thousands of sessions across millions of ports/users.

SIP Trunking Advantages

  • Extensive interoperability testing and features such as SIP message manipulation
  • Compatibility with a wide range of Time-Division Multiplexing (TDM) PBXs, IP PBXs, SIP endpoints, WebRTC gateways and UC solutions such as Microsoft Skype for Business/ Teams
  • Grow revenues and margins with virtual CPE offerings such as enterprise SBCaaS 
  • Protect customers with Ribbon SBC security features including network topology hiding, DoS/DDoS prevention, encryption and NAT traversal
  • Protect your network with Call Admission Control capabilities to prevent overload conditions.
  • Assure interoperability with a dozen commonly used codecs for audio transcoding as well as video pass-thru for service transparency.
  • Simplify network administration - Ribbon SBCs manage SIP endpoint registration, authentication and per-call state information for interoperability