Integrated Services Digital Network (ISDN) - Subaddressing (SUB) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification
Edition 1998-09-01

Integrated Services Digital Network (ISDN) - Subaddressing (SUB) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification for the user
Edition 1998-09-01

Integrated Services Digital Network (ISDN) - Subaddressing (SUB) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 5: Test Suite Structure and Test Purposes (TSS&TP) specification for the network
Edition 1998-09-01

Integrated Services Digital Network (ISDN) - Subaddressing (SUB) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification (incl. Diskette!!!)
Edition 1998-10-01

Integrated Services Digital Network (ISDN) - Subaddressing (SUB) supplementary service - Digital Subscriber Signalling System No one (DSS1) protocol - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification
Edition 2001-04-01

Integrated Services Digital Network (ISDN) - Subaddressing (SUB) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user (incl. Diskette!!!)
Edition 1998-10-01

Integrated Services Digital Network (ISDN) - Subaddressing (SUB) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network (incl. Diskette!!!)
Edition 2000-01-01

Integrated Services Digital Network (ISDN) - Signalling System No.7 (SS7) - ISDN User Part (ISUP) version 4 for the international interface - Part 10: Subaddressing (SUB) supplementary service [ITU-T Recommendation Q.731, clause 8 (1992), modified]
Edition 2001-11-01

Integrated Services Digital Network (ISDN) - Subaddressing (SUB) supplementary service - Digital Subscriber Signalling System No one (DSS1) protocol - Part 3: Test Suite Structure and Test Purposes (TSS and TP) specification for the user
Edition 2001-04-01

Integrated Services Digital Network (ISDN) - Subaddressing (SUB) supplementary service - Digital Subscriber Signalling System No one (DSS1) protocol - Part 4: Abstract Test Suite (ATS) and partial Protocol implementation eXtra information for Testing (PIXIT) proforma specification for the user
Edition 2001-04-01