Testing SIP-to-SIP Interworking for Basic Calls and PSTN/ISDN Simulation Services in IMS Networks

TTsuite-IMS_SS_IW provides an Executable Test Suite (ETS), based on the Abstract Test Suite (ATS) standardized by ETSI for testing SIP-to-SIP interworking for Basic Calls and Supplementary Services (corresponding to PSTN/ISDN Supplementary Services) in IMS networks.


  • 164 full-featured tests for:
    • Basic calls
      • Successful
      • Unsuccessful
    • Supplementary services
      • Originating Identification Presentation (OIP)
      • Originating Identification Restriction (OIR)
      • Terminating Identification Presentation (TIP)
      • Terminating Identification Restriction (TIR)
      • Communication HOLD
      • Communication Diversion (CDIV)
      • Conference (CONF)
      • Call Waiting (CW)
      • Completion of Communications to Busy Subscriber (CCBS)
      • Completion of Communications by No Reply (CCNR)
      • Explicit Communication Transfer (ECT)
  • Emulating of up to 4 UEs
  • Exhaustive set of context parameters
    • Flexible adaptation of SIP/IMS tests to the IMS core network implementation under test
  • Fully automated test execution
  • Platform-independent test execution
  • Test tracing on different levels of detail
  • Test definition and documentation in the standardized test notation TTCN-3


  • Standards-based testing according to IMS specifications
  • Fast and simple test execution and analysis
  • Repeatability of tests and full support of test automation
  • Platform independence and rapid integration in existing test environments
  • Flexibility through usage of the constantly evolving standardized test notation TTCN-3



  • ETSI TS 186001-3: "Technical Committee for IMS Network Testing (INT); Network Integration Testing; Part 3: Test Suite Structure and Test Purposes (TSS&TP) for SIP-SIP".
  • ETSI TS 186001-4: "IMS Network Testing (INT); Network Integration Testing; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification".
  • ETSI ES 201 873-1: "Methods for Testing and Specification (MTS); The Testing and Test Control Notation version 3; Part 1: TTCN-3 Core Language".

IMS_SS_IW screenshot
Test Management, Execution and Analysis for IMS_SS_IW

Reference Platforms

  • Java 8
  • Microsoft Windows 7/8/10
  • Linux (GTK2, x86-32, x86-64)

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