Digital Enhanced Cordless Telecommunications (DECT) - Common Interface (CI) - Part 8: Speech and audio coding and transmission (ETSI EN 300 175-8 V2.5.1 (2013-08))
Cable networks for television signals, sound signals and interactive services - Part 1: System performance for forward paths (IEC 60728-1:2007) (english version)
Digital Enhanced Cordless Telecommunications (DECT) - Common Interface (CI) - Part 8: Speech and audio coding and transmission (ETSI EN 300 175-8 V2.6.1 (2015-07))