| In force components | 
| Number 
 | Title | Status | 
| G.727 (12/90) 
 | 5-, 4-, 3- and 2-bit/sample embedded adaptive differential pulse code modulation (ADPCM) Corresponding ANSI-C code is available in the G.727 module of the ITU-T G.191 Software Tools Library
 | In force 
 | 
| G.727 (1990) Corrigendum 1 (05/05) 
 | Correction to Annex A: Extensions of Recommendation G.727 for use with uniform-quantized input and output 
 | In force 
 | 
| G.727 Annex A (11/94) 
 | Extensions of Recommendation G.727 for use with uniform-quantized input and output | In force 
 | 
| G.727 Appendix I (03/91) 
 | Digital test sequences for the verification of the G.727 5-, 4-, 3- and 2-bit/sample embedded ADPCM algorithm This document corresponds to G.727 Appendix I. It includes 6 diskettes containing digital test sequences for the verification of the G.727 embedded ADPCM codec implementations. The document reproduces the user guide published in the CCITT collective letter No. 12/XV (1991)
 | In force 
 | 
| G.727 Appendix II (05/94) 
 | Comparison of ADPCM algorithms This Appendix is published with the double number G.726 App. III and G.727 App. II
 | In force 
 |