Specifies requirements for acoustic-to-digital and digital-to-acoustic performance of digital terminals, including Integrated Service Digital Network (ISDN) terminals and terminals connected to the integrated services compatible station (ICS) interface of an integrated services PBX (SPBX).
ANSI/TIA/EIA 579-A-1998 history
1998ANSI/TIA/EIA 579-A-1998 Acoustic-to-Digital and Digital-to-Acoustic Transmission Requirements for ISDN Terminals