| | | 1998-05-11 | Cisco Systems, Inc. (G994_1-01) |
| | | 1998-05-25 | Texas Instruments (G994_1-02) |
| | | 1998-08-17 | Paradyne Corporation (G994_1-06) |
| | | 1998-08-27 | GlobeSpan Semiconductor, Inc. (G994_1-07) |
| | | 1998-09-04 | Siemens (G994_1-08) |
| | | 1998-09-15 | Matsushita Graphic Communication Systems, Inc. (G994_1-09) |
| | | 1998-09-18 | AltoCom Inc. (G994_1-10) |
| | | 1998-09-28 | Motorola Inc. (G994_1-15) |
| | | 1998-10-05 | Bell Atlantic Network Services, Inc. (G994_1-11) |
| | | 1998-10-07 | AMD (G994_1-13) |
| | | 1998-10-12 | Mitsubishi Electric Corp. (G994_1-12) |
| | | 1998-10-13 | Sasken Communicaion Technologies (G994_1-14) |
| | | 1999-03-18 | VoCAL Technologies Ltd (G994_1-16) |
| | | 1999-05-17 | Intel Corporation (G994_1-17) |
1.0 | G.994.1 | Superseded | 1999-07-02 | |
| | | 1999-08-02 | ECI Telecom Ltd. (G994_1-18) |
1.1 | G.994.1 (1999) Cor. 1 | Superseded | 2000-04-04 | |
| | | 2000-09-20 | Aware, Inc. (G994_1-19) |
2.0 | G.994.1 | Superseded | 2001-02-09 | |
| | | 2002-05-08 | Catena Networks, Inc. (G994_1-20) |
3.0 | G.994.1 | Superseded | 2002-07-29 | |
| | | 2003-04-08 | Intel Corporation (G994_1-21) |
4.0 | G.994.1 | Superseded | 2003-05-22 | |
| | | 2003-10-20 | Broadcom Corporation (G994_1-22) |
4.1 | G.994.1 (2003) Amd. 1 | Superseded | 2004-02-22 | |
4.2 | G.994.1 (2003) Amd. 2 | Superseded | 2004-06-13 | |
4.3 | G.994.1 (2003) Amd. 3 | Superseded | 2005-01-13 | |
| | | 2005-04-11 | Paradyne Corporation (G994_1-23) |
| | | 2005-04-18 | Alcatel (G994_1-24) |
4.4 | G.994.1 (2003) Amd. 4 | Superseded | 2006-01-13 | |
5.0 | G.994.1 | Superseded | 2007-02-13 | |
| | | 2007-06-27 | Aware, Inc. (G994_1-25) |
5.1 | G.994.1 (2007) Amd. 1 | Superseded | 2007-11-22 | |
| | | 2008-02-26 | Aware, Inc. (G994_1_Amd2-01) |
5.2 | G.994.1 (2007) Amd. 2 | Superseded | 2008-04-13 | |
5.3 | G.994.1 (2007) Amd. 3 | Superseded | 2009-03-22 | |
| | | 2009-05-19 | Aware, Inc. (G994_1_Amd4-01) |
5.4 | G.994.1 (2007) Amd. 4 | Superseded | 2009-06-29 | |
| | | 2009-10-08 | Aware, Inc. (G994_1_Amd5-01) |
5.5 | G.994.1 (2007) Amd. 5 | Superseded | 2010-04-22 | |
| | | 2010-10-22 | Aware, Inc. (G994_1_Amd6(2010_10)-01) |
5.6 | G.994.1 (2007) Amd. 6 | Superseded | 2010-11-29 | |
| | | 2011-02-24 | Aware, Inc. (G994_1_Amd7-01) |
5.7 | G.994.1 (2007) Amd. 7 | Superseded | 2011-04-13 | |
| | | 2011-10-11 | Aware, Inc. (G994_1_Amd8-01) |
| | | 2011-10-11 | Aware, Inc. (G994_1_Cor_1-01) |
5.8 | G.994.1 (2007) Cor. 1 | Superseded | 2011-10-29 | |
5.9 | G.994.1 (2007) Amd. 8 | Superseded | 2011-12-16 | |
6.0 | G.994.1 | Superseded | 2012-06-13 | |
6.1 | G.994.1 (2012) Amd. 1 | Superseded | 2012-10-29 | |
| | | 2013-07-23 | TQ DELTA, LLC (G994_1_Amd2-02) |
6.2 | G.994.1 (2012) Amd. 2 | Superseded | 2013-08-29 | |
6.3 | G.994.1 (2012) Amd. 3 | Superseded | 2014-01-13 | |
| | | 2014-05-19 | TQ DELTA, LLC (G994_1_Amd4-02) |
| | | 2014-05-19 | TQ DELTA, LLC (G994_1-26) |
| | | 2014-08-22 | Adtran, Inc. (G994_1-27) |
6.4 | G.994.1 (2012) Amd. 4 | Superseded | 2014-12-05 | |
| | | 2015-01-23 | TQ DELTA, LLC (G994_1_Amd5-02) |
6.5 | G.994.1 (2012) Amd. 5 | Superseded | 2015-02-13 | |
6.6 | G.994.1 (2012) Amd. 6 | Superseded | 2015-08-29 | |
6.7 | G.994.1 (2012) Amd. 7 | Superseded | 2016-06-13 | |
6.8 | G.994.1 (2012) Cor. 1 | Superseded | 2016-10-29 | |
6.9 | G.994.1 (2012) Amd. 8 | Superseded | 2017-04-06 | |
7.0 | G.994.1 | Superseded | 2017-04-06 | |
6.10 | G.994.1 (2012) Amd. 9 | Superseded | 2017-12-07 | |
7.1 | G.994.1 (2017) Amd. 1 | Superseded | 2017-12-07 | |
7.2 | G.994.1 (2017) Amd. 2 | Superseded | 2018-03-16 | |
8.0 | G.994.1 | Superseded | 2018-11-29 | |
8.1 | G.994.1 (2018) Amd. 1 | Superseded | 2020-03-15 | |
| | | 2020-11-02 | Maxlinear, Inc. (G994_1-28) |
| | | 2020-12-18 | Huawei Technologies Co., Ltd. (G994_1Amd2-01) |
8.2 | G.994.1 (2018) Amd. 2 | Superseded | 2021-02-22 | |
9.0 | G.994.1 | In force | 2021-02-22 | |
9.1 | G.994.1 (2021) Amd. 1 | In force | 2022-04-22 | |