C3 Call Session Controller

Provides service convergence and feature transparency across a wide range of networks

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C3 Call Controller

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C3 Call Session Controller

Today’s operators are seeking market-proven, intelligent platforms that can interwork multiple network types, signaling, and protocols in order to offer high value, revenue-generating services.  The C3™ Call Session Controller, part of GENBAND’s call controller portfolio of innovative transformation products, is an intelligent multi-application call server and media server/media gateway control platform for IMS deployments.

Deployed globally in the smart cores of many operator networks, the C3 media gateway controller provides service convergence and feature transparency across a wide range of wireless, wireline, TDM, and IP networks. Solutions supported by the C3 include IPX, Peering, Intra-Network Interconnect, MGCF, MRFC, Gateway MSC, and IP Transcoding and Media Adaptation.

The highly-scalable C3 media gateway controller operates in small, large, and geo-redundant configurations to millions of Busy Hour Call Attempts. Operators can grow capacity as needed by simply adding pairs of C3 nodes to a deployed system.

The C3 integrates call session control, media gateway and media server control, service logic, billing, regulatory, signaling, service creation, and element management within a common, scalable software and hardware environment, reducing the need to deploy costly additional platforms. It provides open, standard access and trunking interfaces for signaling, management, and line equipment/CPE, including SIP, SIP-I, SIP-T, H.248, H.323, PRI, SIGTRAN, CAS/R2, SS7/C7, BICC, IS-41 and SS7/AIN/IN, as well as a wide variety of country-specific variants.


Operators can seamlessly evolve into IMS MGCF and MRFC elements, and transform GENBAND’s media gateways with call controllers into access or interconnect media plane elements, thus ensuring both investment protection and service transparency.


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C3 Call Controller Features:

  • Versatile call session / media gateway / media server controller and signaling gateway for ILECs/PTTs, AOs, CLECs, Wholesale, IOCs, and Mobile operators
  • Flexibility for standalone deployments and interoperable with IMS cores
  • Globally-deployed and market-proven, with carrier grade redundancy and geo-diversity
  • Supports IPX, Peering, MGCF, MRFC, Gateway MSC, Intra-Network Interconnect, and IP Transcoding and Media Adaptation solutions
  • Advanced transit and routing services to replace legacy TDM Class 4 and International Gateway infrastructures
  • Scales readily from small to large deployments with millions of busy hour call attempts supported using COTS platform
  • Green Technology providing significant space, cooling and power cost reductions


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