Integrated Services Digital Network (ISDN); Closed User Group (CUG) Supplementary Service; Digital Subscriber Signalling System No. One (DSS1) Protocol; Part 6: Abstract Test Suite (ATS) and Partial Protocol Implementation eXtra Information for Testing (P
This sixth part of ETS 300 138 specifies the Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma for the Network side of the T reference point or coincident S and T reference point (as defined in ITU-T Recommendation I.411 [11]) of implementations conforming to the stage three standard for the Closed User Group (CUG) supplementary service for the pan- European Integrated Services Digital Network (ISDN) by means of the Digital Subscriber Signalling System No. one (DSS1) protocol@ ETS 300 138-1 [2]. ETS 300 138-5 [4] specifies the Test Suite Structure and Test Purposes (TSSTP) related to this ATS and partial PIXIT proforma specification. Other parts specify the TSSTP and the ATS and partial PIXIT proforma for the User side of the T reference point or coincident S and T reference point of implementations conforming to ETS 300 138-1 [2].