S6t Interface

Diameter load tester S6t interface test solution
S6t Interface

Diameter load tester S6t interface test solution


S6t interface is between the SCEF and HSS. The S6t interface test solution from Valid8 enables conformance or load testing of this interface,

What It Can Do For You

Tests the S6t interface.

Why It’s Different

  • Scalable software-based architecture can run on a range of hardware from COTS and high-end customer provided hardware to Virtual Machines and the Cloud (e.g. Amazon AWS) for maximum versatility and performance
  • Web-based UI is easy to learn
  • HTTP API enable integration with automation test systems and other equipment
  • Stateful modeling provides accurate emulation of network elements


  • Emulates some or all of core network, exposing all internal interfaces
  • Can run alongside 4G and 3G core network emulators
  • Conformance tests available for each interface
  • Emulators available per subsystem 
  • OTA connection available for UEs and IoT devices
  • True stateful simulation
  • Signaling request/response messages for call handling, mobility management, authentication, QoS
  • Report on media received, call connect time, call duration, jitter, packet loss
  • Generate valid and invalid/negative messages and call-scenarios (fully editable scenarios)
  • Supports sending invalid messages including malformed, dropped, and misordered packets
  • Check parameters in messages from SUT and flag errors
  • 3GPP-compliant interfaces


  • Base station (femto or emulated)
  • AMF
  • SMF
  • PCF
  • AUSF
  • UDM
  • UDR
  • N3IWF
  • EIR
  • MME
  • SGW
  • PGW
  • OCS
  • HSS
  • PCRF
  • ePDG
  • Configuration Information Requests/Answers
  • Reporting-Information Requests/Answers
  • Non IP Data Delivery(NIDD)-Information Requests/Answers
Configurable Parameters
  • ‍Call session length
  • Concurrent calls/endpoints

Automation API

User commands can be fully automated using REST API. This includes performing all test control functions as well as collecting results and metrics. It can be integrated into virtually any CI system via the HTTP API, including Jenkins, CircleCI, Gitlab and others.


The application’s subsystems can be edited directly in the browser using TDL or by using the graphical tools. The Message Workshop allows for creating of test scenarios directly from the hex stream of a remote capture, while the Graphical Editor (on the feature roadmap for 2019) will allow for creating customized call scenarios by dragging and dropping the call flow to meet your test needs.

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Use Cases

HSS Under Test

For testing the HSS Server, the Valid8 Tester can generate S6a, Sh Diameter traffic to test performance and stability.

Supported Scenarios:
  • Cx
  • D/D'
  • S6a/S6c/S6d/S6m/S6n/S6t
  • S13/S13'
  • Sh
  • SLh
  • Sp
  • SWx
S6t Interface
S6t Interface

Summary of Specifications


  • 3GPP TS 29.336 (S6t)
  • IETF RFC 6733, IETF RFC 3588, IETF RFC 5516 (Diameter)
  • IETF RFC 4960 (SCTP)
  • IETF RFC 793 (TCP)

Product Details

S6t Interface

All Solutions

Valid8 exports its products strictly in accordance with all US Export Control laws and regulations which shall apply to any purchase or order. Specifications are subject to change without notice.

500 West Cummings Park, Suite 6550 Woburn, MA 01801
p: +1-855-482-5438
f: +1-781-996-3708

Ordering Information

Product Name: Diameter Load Tester 

Product Code: diameter-load-tester

Datasheet Page

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S6a Interface

Product Name: Diameter Load Tester 

Product Code: diameter-load-tester

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HSS Emulator

HSS Emulator

Load Options:
lte-hss-emulator-10 - 10 sessions, basic call
lte-hss-emulator-100 - 100 sessions, basic call
lte-hss-emulator-1,000 - 1,000 sessions, basic call
lte-hss-emulator-10,000 - 10,000 sessions, basic call
(others on request)

Protocol Interface Options:
(others on request)

Miscellaneous Options:
Security, fuzzing, penetration test
Network emulator internal impairments module

Datasheet Page

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