In the current market context of 5G and cloud migration, automated testing is crucial for telcos, allowing for continuous integration and delivery, enabling quick adaptation and iteration of systems. Additionally, it can simulate real-world scenarios and stress test system capacity to ensure it can handle the demands of 5G and cloud-based applications.

R Systems TOP Testing Suite (TTS) is an automated testing tool that enhances the quality, efficiency, and reliability of telecoms’ 5G and cloud migration efforts, supporting all major industry-wide IT and telecom protocols, including BSS/OSS applications, SS7, IP network elements, and E2E telecom services.

Cover the full range of functional, load, performance, stress, stability, and configuration testing in complex telecom and IT environments

Enable continuous testing in line with Agile and DevOps practices, ensuring faster time to market

Rapidly automate telecom protocol or software test plans, reducing regression testing time from days to minutes

Industry-proven automated testing solution for end-to-end testing, evaluation, and validation of telecom services.

Main Features

Telecom specific

Modular, multi-protocol solution based on the JMeter platform open-source elements and custom R Systems plug-ins​

CI/CD, DevOps, Cloud & 5G

CI/CD support, Jenkins integration, J-unit plugin support set a great roadmap for the DevOps model

Intuitive GUI

Easy to use and providing an intuitive graphical user interface which doesn’t require programming skills and is faster than other GUI tools.

Maintenance and support

Expert support ensuring smooth implementation, handover, developments, and prompt customer service, according to established SLAs

Additional telecom functionalities

Support for Generic Bootstrapping Architecture (GBA), statistics and reports using TTS Dashboard Listener, DTLS support within TTS UDP Client

Supported protocols 


  • Diameter Client and Server, with Diameter interfaces including: Ro/Gy, Rf, Gx, Sy, S6a/S6d/S6c, Sh, Cx/Dx, SWx, etc.
  • EAP Identity/Aka/Prime/Pseudonyms/IMSI encryption functionalities
  • Flexible Diameter dictionary


  • MAP – all versions supported
  • CAP – all Camel phases supported
  • INAP – currently supporting ETSI Core INAP CS-1
  • Support for both ANSI and ITU standards, at MTP, TCAP and SCCP layers.
  • Easy to add custom protocol extensions, based on ASN.1 specifications.

Additional plug-ins

  • LDAP
  • Telnet/SSH
  • Radius
  • Web Services (SOAP/HTTP)
  • SMPP
  • HTTP Server
  • TTS SMTP Server Sampler
  • DNS_Client & Server.

VoLTE Testing

R Systems’ TOP Testing Suite can simulate both Diameter and SIP signaling used in VoLTE session management. The Diameter interfaces supported on top of Base Protocol include: Cx, Dh, Dx, Gy, Gx, Rf, Ro, Rx, S6a, Sh, S9, Sy.

The SIP plugin provides connectivity to VoLTE x-CSCF elements allowing for sending SIP messages used in registration, IMS session initiation, charging and release.

Download the solution brief here.

Demo videos and tutorials

Defining Diameter test flows

5G HTTP2 scenarios

Jenkins integration

Customer use cases and success stories

The support services provided by R Systems for the TOP Testing Suite have been excellent, I couldn’t have asked for more. A dedicated expert was always available, helping with the creation and implementation of the initial test cases, throughout handover, further developments and ongoing support later on.

R Systems TTS is an easy to use tool, with good documentation of features and release notes. R Systems engineers are very supportive and knowledgeable, they demonstrated professionalism and skills on many occasions. They understand our requirements and deliver expected results. Overall Sprint is very happy customer of R Systems Top Tool, keep up the good work and we expect the continued support.

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Request a free 30-day trial and learn how R Systems TOP Testing Suite can support your specific test automation requirements. 

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