Contact Person
Prof. Dr. Ina Schieferdecker
Prof. Dr. Ina Schieferdecker
Director FOKUS
Tel.: +49 30 3463-7241

Axel Rennoch
Project Manager
Business Unit SQC
Tel.: +49 30 3463-7344


Jan. 01, 2005 to Dec. 31, 2016


Standardized communication protocols and technical specifications do require unique descriptions for testing. At the European Telecommunications Standards Institute (ETSI) most test specifications are defined and standardized using the Testing & Test Control Notation (TTCN-3). This work requires the

  • development of very large test suites in parallel team work,
  • creation and usage of TTCN-3 libraries, and
  • validation with/without the system under test (SUT).

Project Goals

SQC members participated in the following STFs:

  • Hiperman: STF 252,
  • IPv6: STF 276,
  • SIP/ISUP-A&B: STF 297/301/348/366,
  • SIP/ISDN and SIP/SIP Network integration: STF 306/ STF369,
  • SIP/ISUP-C: STF 310/387,
  • Suppl. services TIP/TIR, OIP/OIR, HOLD: STF 334/335/336,
  • TTCN-3 Evolution: STF 337/446/478/491/514,
  • SIP/SDP in IMS core network: STF 346 (rel. 7), STF 445/467/471 (3GPP release 10)
  • IMS: NNI interop (STF 394), supplementary services (STF 406),
  • DIAMETER Rx, Gx, S6, S9, Cx, Dx: STF 434/443/450/466/480,
  • MBT/TDL: STF 442/476,
  • 3GPP TTCN specifications for User Equipment: STF 160,
  • oneM2M TST TTCN-3 conformance tests: TF-001.


Testing & Test Control Notation (TTCN-3)


STFs are organized by the European Telecommunications Standards Institute (ETSI). Their members come from multiple international companies and institutions. The STFs are supervised by the following ETSI groups and departments:

  • Technical Committee BRAN
  • Technical Committee INT
  • Technical Committee TISPAN
  • Technical Committee MTS
  • Technical Committee ITS
  • Centre for Testing and Interoperability (CTI)