[J.89impl] Implementor's Guide (06/02) for ITU-T Recommendation J.89 (09/99)

[J.112 AnxBimpl] Implementor's Guide (04/03) for ITU-T Recommendation J.112 Annex B (03/01)

[J.122impl] Implementor's Guide (02/04) for ITU-T Recommendation J.122 (12/02)

[J.191impl] Implementor's Guide (04/03) for ITU-T Recommendation J.191 (07/02)

[J.126impl] Implementor's Guide (01/05) for ITU-T Recommendation J.126 (04/04)