V interfaces at the digital Local Exchange (LE) - V5.1 interface for the support of Access Network (AN) - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network layer (AN side) (incl. Diskette!!!)
Edition 2001-06-01

V interfaces at the digital Local Exchange (LE) - V5.1 interface for the support of Access Network (AN) - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network layer (LE side) (incl. Diskette!!!)
Edition 2001-06-01

V interfaces at the digital Local Exchange (LE) - V5.1 interface for the support of Access Network (AN) - Part 8: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the data link layer (incl. Diskette!!!)
Edition 2000-09-01

V interfaces at the digital Local Exchange (LE) - V5.2 interface for the support of Access Network (AN) - Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification
Edition 2000-03-01

V interfaces at the digital Local Exchange (LE) - V5.2 interface for the support of Access Network (AN) - Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network layer (AN side) (incl. Diskette!!!)
Edition 2001-06-01

V interfaces at the digital Local Exchange (LE) - V5.2 interface for the support of Access Network (AN) - Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network layer (LE side) (incl. Diskette!!!)
Edition 2001-06-01

V interfaces at the digital Local Exchange (LE) - V5.2 interface for the support of Access Network (AN) - Part 8: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the data link layer (incl. Diskette!!!)
Edition 2000-10-01

Integrated Services Digital Network (ISDN) - Signalling System No.7 - ISDN User Part (ISUP) version 3 for the international interface - Part 31: Protocol Implementation Conformance Statement (PICS) proforma specification for basic services
Edition 2000-11-01

Integrated Service Digital Network (ISDN) - Signalling System No.7 (SS7) - ISDN User Part (ISUP) version 4 for the international interface - Part 33: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for basic services (incl. CD-ROM!!!)
Edition 2003-09-01

Integrated Services Digital Network (ISDN) - Signalling System No.7 - ISDN User Part (ISUP) version 3 for the international interface - Part 34: Protocol Implementation Conformance Statement (PICS) proforma specification for supplementary services
Edition 2000-12-01