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hssFlex Test Suite

The hssFlex Test Suite provides a comprehensive IMS test bed, allowing NEMs and NSPs to perform comprehensive device and end-to-end testing using a combination of the industry-leading HSS test emulator and IMS subscribers in a single test application.

Spec sheet (PDF)

Key features

  • Over two million subscribers per chassis; 256 000 subscribers per port
  • Thousands of registrations with authentication per second
  • Thousands of database transactions per second
  • Tightly coupled interfaces (Cx, Dx, Sh, Dh, Ph) with real-time synchronization among all the interfaces
  • Simplified configuration and management of IMS subscriber and profiles
  • Out-of-the-box standard-compliant with flexibility to modify protocol state machines, messages and flows


  • Complete test lifecycle coverage: feature, negative, load, regression, interoperability and scalability testing for IMS core network and elements such as I-CSCF, S-CSCF and AS Read more
  • End-to-end IMS core testing using hssFlex and sipFlex to emulate the HSS and IMS subscribers respectively in a single and easy-to-use application Read more
  • Registration testing using AKA and SIP digest; registration flood testing from both the subscribers and the HSS perspective Read more
  • Real-time IMS network and device response latency measurement under various network load conditions
  • Various pre-built in test actions to simulate real-world scenario for testing user interactions such as an IMS user being denied services or the addition of new services to a user profile Read more
  • Integrated SLF allows for testing of large scale IMS deployments and redirection capability of the IMS core network and elements such as the I-CSCF and the AS Read more

hssFlex Test Suite

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