The performance of digital circuit multiplication equipment (DCME)

Uses an analytic model to assess the effectiveness of various dynamic load control (DLC) techniques, which attempt to ensure that the performance of digital circuit multiplication equipment (DCME) systems is acceptable. A number of different international traffic profiles are examined, and recommendations for the use of DLC are made. A DCME terminal typical has 120 or 150 input channels, and 30 output channels, and can carry PSTN and ISDN traffic. PSTN traffic comprises voice and voiceband data (facsimile). Data compression is achieved by applying two techniques: low rate encoding (ADPCM), to reduce the number of bits per sample, and digital speech interpolation (DSI), to exploit the silences in speech