Digital Circuit Multiplication Equipment

Digital Circuit Multiplication Equipment (DCME) was a type of voice compression equipment that is installed at either end of a long-distance link (typically communications satellite or submarine communications cable). The main characteristics of DCME are defined in ITU-T recommendation G.763. DCME consists of a voice interpolation stage, which is a form of statistical multiplexor applied to voiceband signals, and a low rate encoding stage which exploits correlation between successive voiceband samples on an individual input channel to reduce the transmitted bitrate from that required by PCM of equivalent quality.