IMP8980D PCM Digital Switch  
  This CMOS device is designed for switching PCM-encoded voice or data, under microprocessor control, in a modern digital exchange, PBX or Central Office. It provides simultaneous connections for up to 256 64kbit/s channels. Each of the eight serial inputs and outputs consist of 32 64kbit/s channels multiplexed to form a 2048kbit/s ST-BUS stream. In addition, the IMP8980D provides microprocessor read and write access to individual ST-BUS (Serial Telecom Bus) channels.
    Key Features  
  • ST-BUS compatible
  • 8-line x 32-channel inputs
  • 8-line x 32-channel outputs
  • 256 ports non-blocking switch
  • Single power supply (+5V)
  • 3OmW power consumption
  • Microprocessor-control interface
  • Pin-compatible with Mitel MT8980
    Data Sheets  
  · IMP8980D