Normy ETSI - Evropský úřad pro normalizaci v telekomunikacích - strana 5716

Digital cellular telecommunications system (Phase 2+); Half Rate Speech Transcoding (3GPP TS 46.020 version 5.0.0 Release 5)

Norma vydána dne 30.6.2002

Digital cellular telecommunications system (Phase 2+); Half Rate Speech Transcoding (3GPP TS 46.020 version 6.0.0 Release 6)

Norma vydána dne 31.12.2004

Digital cellular telecommunications system (Phase 2+); Half rate speech; Half rate speech transcoding (3GPP TS 46.020 version 7.0.0 Release 7)

Norma vydána dne 29.6.2007

Digital cellular telecommunications system (Phase 2+); Half rate speech; Half rate speech transcoding (3GPP TS 46.020 version 8.0.0 Release 8)

Norma vydána dne 6.2.2009

Digital cellular telecommunications system (Phase 2+); Half rate speech; Half rate speech transcoding (3GPP TS 46.020 version 9.0.0 Release 9)

Norma vydána dne 2.2.2010

Digital cellular telecommunications system (Phase 2+); Half rate speech; Substitution and muting of lost frames for half rate speech traffic channels (3GPP TS 46.021 version 10.0.0 Release 10)

Norma vydána dne 28.4.2011

Digital cellular telecommunications system (Phase 2+); Half rate speech; Substitution and muting of lost frames for half rate speech traffic channels (3GPP TS 46.021 version 11.0.0 Release 11)

Norma vydána dne 22.10.2012

Digital cellular telecommunications system (Phase 2+); Half rate speech; Substitution and muting of lost frames for half rate speech traffic channels (3GPP TS 46.021 version 12.0.0 Release 12)

Norma vydána dne 7.10.2014

Digital cellular telecommunications system (Phase 2+); Half rate speech; Substitution and muting of lost frames for half rate speech traffic channels (3GPP TS 46.021 version 13.0.0 Release 13)

Norma vydána dne 21.1.2016

Digital cellular telecommunications system (Phase 2+) (GSM); Half rate speech; Substitution and muting of lost frames for half rate speech traffic channels (3GPP TS 46.021 version 14.0.0 Release 14)

Norma vydána dne 6.4.2017