Signaling Link Access Control (LAC) Standard for cdma2000 Spread Spectrum Systems
Edition 2014-06

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

Industrial communication networks - Fieldbus specifications - Part 4-4: Data-link layer protocol specification - Type 4 elements (IEC 61158-4-4:2019); English version EN IEC 61158-4-4:2019, only on CD-ROM
Edition 2020-08

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Data link layer - Part 1: General aspects [ITU-T Q.920 (1993), modified]; English version ETS 300402-1:1995
Edition 1996-06

Integrated Services Digital Network (ISDN) - ISDN Packet Mode Bearer Services (PMBS) - ISDN Virtual Call (VC) and Permanent Virtual Call (PVC) bearer services provided by the D-channel of the user access; basic and primary rate; English version ETS 300049:1997
Edition 1998-08

Private Integrated Sevice Network (PISN) - Terms and definitions; English version ETS 300415:1996
Edition 1997-08

Radio Equipment and Systems (RES) - Digital Enhanced Cordless Telecommunications (DECT); Data service profile (DSP) - Generic data link service for closed user groups (service type C, class 1); English Version ETS 300699:1996
Edition 1998-06

Network Aspects (NA); Connectionless Broadband Data Service (CBDS); part 2: basic bearer service definition; English version ETS 300217-2:1992
Edition 1993-07

Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No. one (DSS1) protocol - Data link layer - Part 2: General protocol specification [ITU-T Q.921 (1993), modified]; English version ETS 300402-2:1995
Edition 1996-06

European digital cellular telecommunications system (Phase 2) - Base Station Controller - Base Transceiver Station (BSC-BTS) interface - Layer 2 specification; English version ETS 300595:1994
Edition 1995-02