Access and Terminals (AT); Ordinary quality voice bandwidth 4-wire analogue leased line (A4O); Connection characteristics and network interface presentation

Standard published on 4.7.2001

Business TeleCommunications (BTC); Special quality voice bandwidth 4-wire analogue leased line (A4S); Connection characteristics and network interface presentation

Standard published on 28.2.1996

Access and Terminals (AT); Special quality voice bandwidth 4-wire analogue leased line (A4S); Connection characteristics and network interface presentation

Standard published on 4.7.2001

Business TeleCommunications (BTC); Ordinary and Special quality voice bandwidth 4-wire analogue leased lines (A4O and A4S); Terminal equipment interface

Standard published on 28.2.1996

Access and Terminals (AT); Ordinary and Special quality voice bandwidth 4-wire analogue leased lines (A4O and A4S); Terminal equipment interface

Standard published on 4.7.2001

ElectroMagnetic Compatibility and Radio Spectrum Matters (ERM); Wide band audio links; Part 1: Technical characteristics and test methods

Standard published on 2.8.2000

Electromagnetic compatibility and Radio spectrum Matters (ERM); Wide band audio links; Part 2: Harmonized EN under article 3.2 of the R&TTE Directive

Standard published on 2.8.2000

Radio Equipment and Systems (RES); Wide band audio links; Technical characteristics and test methods

Standard published on 15.12.1995

Radio Equipment and Systems (RES); Wide band audio links; Technical characteristics and test methods

Standard published on 15.3.1997

Broadband Integrated Services Digital Network (B-ISDN); Broadband Virtual Path Service (BVPS); Part 1: BVPS for Permanent communications (BVPS-P)

Standard published on 15.8.1995