The control of speech levels in the telephone network is important for the listeners' comfort, and to
ensure optimum performance of network equipment. Manufacturers of network signal processing
equipment (e.g. echo cancellers) are developing Automatic L
ITU-T G.169-1999 history
2011ITU-T G.169-2011 Automatic level control devices (Study Group 16)
1999ITU-T G.169-1999 Automatic Level Control Devices Study Group 15; 32 pp