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Anthony Wiles MTS#34 Rome, April 2002

TD011 STF 213 Status Report (formerly STF187) (Jens Grabowski, Gyorgy Rethy, Ina Schieferdecker, Anthony Wiles, Colin Willcock). Anthony Wiles MTS#34 Rome, April 2002. CRs resulting from vote. Over 100 CRs received after extended voting period Mainly from Ericsson

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Anthony Wiles MTS#34 Rome, April 2002

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  1. TD011 STF 213 Status Report (formerly STF187) (Jens Grabowski, Gyorgy Rethy, Ina Schieferdecker, Anthony Wiles, Colin Willcock) Anthony Wiles MTS#34 Rome, April 2002

  2. CRs resulting from vote • Over 100 CRs received after extended voting period • Mainly from Ericsson • All resolved to agreement of STF213/Ericsson/TTCN-3 list etc) • All changes are tracked in document + CR list • Catagories of comments • Editorial (17) • Test Components (2) • String/character types/values (10) • Type compatability etc. (12) • Import (8) • Regular expressions (3) • BNF (4 + TTCN-3 list) • Test steps (1) • ASN1 (7) • Encoding (3) • Miscellaneous (40) STF 213 (MTS#34, Rome, April 2002)

  3. Changes to the Core (1) (from v.1.1.0 not just CRs) • Editorial/restructuring • General editorials, corrections to examples, etc. • Operational semantics -> Part 4 • Predefined functions included from TS 101 875 • Clarifications • Scope mechanism, allowed connection of PTCs • Structural equivalence/type compatability issues • Corrections/simplifications • BNF • Consitent/simpler Import mechanism • Named alts -> teststeps -> altsteps (macro --> functional) • Timers (no negative values, zero values) STF 213 (MTS#34, Rome, April 2002)

  4. Changes to the Core (2) • Corrections/simplifications (cont) • Operator precedence revised • PTCs (e.g., scope of PTC identifiers) • Verdicts (set.verdict -> setverdict) • ASN.1 issues (named bits/identifiers, mapping) • Additions/improvements • Regular expressions • Power operators • Refinement of the port model • Return value on expressions • Addition of superset/subset • Any type • Additional types (short, long, strings) by encoding) • Ranges for float STF 213 (MTS#34, Rome, April 2002)

  5. Changes not done • Default encoding for TTCN-3 • Should be opened as new WI if needed • Power operators • Not urgent - can be added later • IDL Interface • Should be opened as new WI if needed • Some work done outside ETSI • External global timer • Should be done in connection wit RT TTCN-3 STF 213 (MTS#34, Rome, April 2002)

  6. Early CRs on v2.2.0 • Received some CRs on v.2.2.0 • One or two BNF corrections • Few editorials • Keyword table param -> parameters • Change example for referencing nested fields • Can approve version 2.2.0 here in Rome and fix these points in the meantime? • Put 2.2.0 to vote meanwhile STF213 produces 2.2.1? • Produce 2.2.1 then vote? When? STF 213 (MTS#34, Rome, April 2002)

  7. Changes to the Tabular Format (from v.1.1.0 not just CRs) • Some editorials • A few corrections • Better format/layout (not technical) • Brought in-line with changes in Core Language • Have received some late comments which should be fixed • No real technical change - corrections to mapping BNF, examples, references, couple of clarifications • Accepted by the TFT Editor (Thomas Wernitz) • Can approve version 2.2.0 here in Rome and fix these points in the meantime? • Put 2.2.0 to vote meanwhile STF213 produces 2.2.1? • Produce 2.2.1 then vote? When? STF 213 (MTS#34, Rome, April 2002)

  8. Part 3 - GFT • Presentation by Ina • Co-ordination with ITU-T • OMG (Testing Profile)? • … STF 213 (MTS#34, Rome, April 2002)

  9. Part 4 - Operational Semantics • An ES or TR? • Plan was to produce version 1 for approval in April • Version 2 in October • Go to ES twice in same year ….! • Propose to downgrade to TR for version 1 (April) and go for ES in October • Or no approval at this meeting (go straight to v2) • Problem - What to refer to from Part 1? • TR (which will soon be replaced by )? • ES (to appear)? • Nothing? • … STF 213 (MTS#34, Rome, April 2002)

  10. CR Mechanism • CR Mechanism is in place • Can be found on http://www.etsi.org/ptcc/Change_request/ptccttcn3cr.htm • Direct links from MTS Portal and PTCC Website • Defines Rules and Procedure • Submission by CR only (downloadable template) • Full solutions must be provided • Mailing list TTCN3CR@list.etsi.fr • Initial follow-up (record, number, status, etc) - Gyorgy Rethy • Resolution by STF213, SG, MTS (in that order) • Discussion (but not decision) on TTCN3 mailing list • Final follow up • All CRs plus Status List on web) • Some proposal for text version of CR template • Word is ETSI standard format • Need Word formatted solutions, not ASCII STF 213 (MTS#34, Rome, April 2002)

  11. Use of TTCN in EP TIPHONTM • EP TIPHONTM • Telecommunications and Internet protocol Harmonization Over networks • EP TIPHON WG6 Testing and Validation • STF196: Test specs based on TIPHONTM profiles for: • H.225 (TTCN-2) • H.245 (TTCN-2) • H.248 (TTCN-2) • SIP (TTCN-3) • OSP (TTCN-3) • BICC (TTCN-2) • Security - ? • Interoperability scenarios for H.323-SIP interworking (Text) STF 213 (MTS#34, Rome, April 2002)

  12. What is SIP? • Session Initiation Protocol, draft RFC2543 • IETF Internet control protocol for • establishing, changing and tearing down voice and multimedia calls • Like http (sip:anthony.wiles@etsi.fr) • Can build services like web pages • Client-Server behaviour (simple) • SIP Components • Use Agents • SIP Servers (proxy server, redirect server) • SIP messages are text based • Defined by a quite complex BNF • Loose syntax STF 213 (MTS#34, Rome, April 2002)

  13. Status of TIPHONTM SIP Conformance Test Specifications • IETF SIP draft RFC 2543 bis4 • 437 Test Purposes (TSS&TP) • Complete TTCN-3 ATS April 2002 (pure SIP) • Currently validating ATS on experimental test platform • Will be input to 10th SIPit April 2002 • Fully validated test suite May-June 2002 • Upgrade to bis9 (RFC) July-September • Upgrade to TIPHON profile based on finalized RFC September-December STF 213 (MTS#34, Rome, April 2002)

  14. What is OSP? • Open Settlement Protocol, TS 101 321 V.2.1.1 • Facilitates the exchange of inter-domain … • Pricing • Authorization • and Settlement Information • … between Internet telephony operators. • Works between multiple administrative domains in a secure manner • XML- based • ASN.1 for authorization • Can be used with SIP or H.323 STF 213 (MTS#34, Rome, April 2002)

  15. Status of TIPHONTM OSP Conformance Test Specifications • TS 101 321 V.2.1.1 • 30 Test Purposes (TSS&TP) • Protocol is very open • TIPHON profile => more TPs • No authorization tests yet => more TPs • Currently validating TTCN-3 ATS on experimental test platform • Remote OSP server in US • Complete June 2002 • May add new test cases in the Autumn (v2) • E.g., authorization • if base standard or profile develops STF 213 (MTS#34, Rome, April 2002)

  16. Conclusions • Specific problems when dealing with text-based protocols • How to represent messages • TTCN-3 has several advantages (over TTCN-2) • Trigger • Address type • Map operations • Interleaved behaviour • Data types such as set and set of (no need to use ASN.1) • Regular expressions • Programming paradigm closer to datacom community • Have implemented and executed the test suites • So we know it works! • Learning curve TTCN-2 -> TTCN-3 not too high • ETSI TBs will use TTCN-3 if there is tool (test system) support • TIPHON, 3GPP STF 213 (MTS#34, Rome, April 2002)

  17. Acknowledgements • EP TIPHONTM • Chairman Mr. Hans Van Der Veer • WG6 Chairman Mr. Klaus Sambor • STF 176 SIP/OSP team • Frederique Aurouet, ACACIA (SIP) • Csaba Koppany, Ericsson (SIP) • Theo Vassilou-Gioles, Testing Technologies (SIP) • Scott Moseley, FSCOM (SIP/OSP) • Sebastian Mueller, FSCOM (OSP) • Jean-Claude Wattelet, Wattelet Telecoms (OSP) • Background support • Nokia, NetTest, Alcatel, Nortel STF 213 (MTS#34, Rome, April 2002)

  18. Thank you!

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