C20 Call Session Controller

Ribbon's C20 Call Session Controller is the world’s leading IP and IMS communications convergence platform for voice and multimedia.  Integrating significant new investment in intelligent innovations, the software-centric C20 utilizes the Ribbons ATCA or Rack Mount Server platform and provides call and session control, network connectivity, switching, signaling and protocol interworking, core and edge interworking, unified multimedia communications, and applications for wireless, wireline, cable, and enterprise markets.

Deployed globally to enable new multimedia services, the C20 grows revenue and ARPU, converges disparate networks, replaces costly legacy switching, and is the cornerstone of new core networks.  It is fully carrier-grade and network-hardened, having switched billions of calls and sessions for business and residential customers.  The C20 is a key element in many of Ribbon’s Solutions including IMS, VoLTE, SIP Trunking, IPX, Peering, and Intra-Network Interconnect.

The C20 serves an important role in establishing trust context in relationship to STIR/SHAKEN and Ribbon Call TrustTM.  In the originating network, the C20 provides origination attestation and tagging and in the terminating network it provides termination verification reporting.  In addition, C20 CDRs can be ingested by Ribbon Analytics to assist in determining potential robocall or fraud call attempts.

C20 Call Controller Features

  • Carrier grade, geo-survivable, open standards-based
  • Core switching, control, interworking, and service logic element in IMS networks
  • Proven interoperability with world's leading core, edge access & interconnect, and applications platforms
  • Green Technology -- reduces power, floorspace, network costs
  • Software-centric, scaling from small to very large, with significant new investments in intelligent innovation
  • Flexible transition for legacy DMS and other switch types
  • Managed by Ribbon C20 Manager and compatible with existing back-office OSS
  • Network-ready across wireless, wireline, cable, enterprise, IP, SIP, TDM
  • Support for STIR/SHAKEN origination attestation and tagging and termination verification reporting
  • Support for Ribbon Call Trust, by enabling the feed of CDRs to Ribbon Analytics for robocall and fraud detection