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Featured researches published by Iwan Nussbaumer.


SDL '95 with MSC in Case | 1995

Test Case Specification Based on MSCs and ASN.1

Jens Grabowski; Dieter Hogrefe; Iwan Nussbaumer; Andreas Spichiger

Informal test specifications are formalized by means of MSCs. Message definitions and constraints are included. For this purpose a new concept for the reference and modification of constraints is introduced. The formalized test specifications can be implemented automatically. Our approach is explained by means of a test case for a layer 3 ISDN protocol (ITU-T Rec. Q.931). The method is implemented in a set of prototype tools.


Archive | 1997

Method for monitoring and checking subscriber connections to isdn

Iwan Nussbaumer; Juerg Thimm; Charles Zehnder


Archive | 1997

Method for automatic testing of switching and transmission procedures in a telecommunication network and a responder for implementing this method

Roberto Bucher; Iwan Nussbaumer; Charles Zehnder


Archive | 1995

Method for testing telecommunication systems or parts thereof.

Franco Bosatta; Charles Zehnder; Andreas Spichiger; Iwan Nussbaumer; Jens Grabowski; Stefan Suter; Roger Schoenberger; Christoph Ruefenacht


Archive | 1995

Method for testing of connections in telecommunication networks

Werner Fehlmann; Iwan Nussbaumer; Werner Reist


Archive | 1999

Method to collect data for creating an image of a network

Jens Grabowski; Stefan Heymer; Dieter Hogrefe; Iwan Nussbaumer; Charles Zehnder


Archive | 1997

Verfahren zum überwachen und prüfen von anschlüssen eines isdn-fernmeldenetzes Method for monitoring and check of connections of a telecommunications network isdn

Iwan Nussbaumer; Juerg Thimm; Charles Zehnder


Archive | 1997

Verfahren zum überwachen und prüfen von anschlüssen eines isdn-fernmeldenetzes

Iwan Nussbaumer; Juerg Thimm; Charles Zehnder


Archive | 1997

Method for monitoring and check of connections of a telecommunications network isdn

Iwan Nussbaumer; Juerg Thimm; Charles Zehnder


Archive | 1995

Method of transmitting subscriber data between terminals of a telecommunications network

Werner Fehlmann; Iwan Nussbaumer

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