A DCME frame structure

Digital circuit multiplication equipment (DCME) permits the concentration of a number of 64kbit/s PCM encoded input trunk channels on a reduced number of transmission channels. It has two basic techniques; one is digital speech interpolation (DSI), the other is adaptive differential pulse code modulation (ADPCM). Essential facilities, interface conditions and overall performance requirements are given by recommendation G.763, 1988. However, frame structure didn't detail assignment. Many corporations such as ECI, NEC and AT and T have produced products. They have used different DCME frame structures. NEC'S NCM-501 DCME fully complies with INTELSAT IESS-501, DCME multiframe length is is longer than new DCME frame length. This new DCME frame structure is described.<>