Data communication - X.25 DTE conformance testing - General principles; identical with ISO/IEC 8882-1:1996
Edition 1997-06

Attachment requirements for Data Terminal Equipment (DTE) to connect to Packet Switched Public Data Networks (PSPDN) using CCITT recommendation X.25 (1984) interface; requirements applicable to DTEs subscribing to Link Access Procedure Balanced (LAPB) extended (modulo 128) operation; english version ETS 300123:1991
Edition 1992-08

Attachment requirements for Data Terminal Equipment (DTE) to connect to Packet Switched Public Data Networks (PSPDN) using CCITT recommendation X.25 (1984) interface; requirements applicable to DTEs subscribing to Multilink operation; english version ETS 300124:1991
Edition 1992-08

Satellite Earth Stations and Systems (SES) - The interconnection of Very Small Aperture Terminal (VSAT) systems to Packet Switched Public Data Networks (PSPDNs); English version ETS 300194:1995
Edition 1996-06

Data communication - Use of the X.25 packet level protocol in local and metropolitan area networks; identical with ISO/IEC 8881:1989 (status of 1991)
Edition 1996-01

Open Systems Interconnection - Protocol for providing the connectionless-mode network service - Part 3: Provision of the underlying service by an X.25 subnetwork; identical with ISO/IEC 8473-3:1995
Edition 1996-06

Information Technology - Data Communications - X.25 Packet Layer Protocol for Data Terminal Equipment
Edition 2002-12-01

Information technology - Telecommunications and information exchange between systems - Use of X.25 to provide the OSI Connection-mode Network Service
Edition 1995-02-28

Information Technology - Telecommunications and Information Exchange Between Systems - High-Level Data Link Control Procedures - Description of the X.25 LAPB-Compatible DTE Data Link Procedures - Amendment 1: Modulo 32768 and Multi-Selective Reject Option (Adopted Amendment 1:1996 to ISO/IEC 7776:1995)
Edition 2006

Information technology - Protocol for providing the connectionless-mode network service: Provision of the underlying service by an X.25 subnetwork
Edition 1997-02-28