Q21 Enterprise Session Border Controller

Scales up to 70,000 SIP based voice sessions

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T-Mobile Czech offers Advanced SIP Trunking Capabilities with GENBAND SBC

Q21 Enterprise Session Border Controller

The GENBAND Q21 is a high performance 2RU (2 rack unit) Commercial Off the Shelf (COTS) platform for an Integrated SBC solution running signaling and media software; as well as a Distributed SBC solution running signaling only software.

Intel DPDK Technology

With 10G interfaces and leveraging the latest and greatest Intel DPDK technology, Q21 scales up to 70,000 SIP based voice sessions supporting world’s largest enterprises, call centers, or government applications, deployed directly or through a service provider.

Commercial Off the Shelf Solution

GENBAND’s next generation cloud enabled SBC software deployed on a Q21 appliance provides robust security, simplified interoperability, advanced session management, and carrier grade reliability for applications such as SIP Trunking, Unified Multimedia Communications and Collaboration, IP-Peering, and inter-site or intra-network interconnects. 


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session border controller SBC

Q21 Advantages:

  • Powerful COTS hardware with innovative state-of-the-art software based media processing
  • Industry leading performance and scalability
  • Optimal for large enterprises, call centers or any service provider networks
  • Flexibility to run as integrated SBC or as signaling only SBC as part of distributed SBC architecture
  • Extensive yet simplified SIP interoperability with a large number of PBXs, for ease of deployment and faster time to market
  • Separate signaling, media, and management interfaces provides independent scalability, security, ease of management
  • Supports On-board codec transcoding
  • Built in storage to maintain large number of Session Detail Records
  • Carrier Grade NEBS compliant
  • Energy efficient hardware platform enabling double digit savings in data center energy costs
  • Solves real world interworking challenges in real-time via advanced SIP message manipulation, onboard and distributed transcoding,
  • Unmatched real-time session visibility to monitor, analyze, report, and enforce network-wide quality and performance
  • Powerful adaptive call routing providing intelligent feedback and dynamic modification of rules and call routing behavior 
  • Unique Multi-tenant support with partitioning capability to segment SBC for multiple operational needs
  • Network-wide licensing across multiple instances of SBCs for significantly lower total cost of ownership


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