channel service unit

1 definition found

channel service unit - Free On-line Dictionary of Computing (26 May 2007) :

  channel service unit
  
     <communications> (CSU) A type of interface used to connect a
     terminal or computer to a digital medium in the same way
     that a modem is used for connection to an analogue medium.
  
     A CSU is provided by the communication carrier to customers
     who wish to use their own equipment to retime and regenerate
     the incoming signals.  The customer must supply all of the
     transmit logic, receive logic and timing recovery in order to
     use the CSU, whereas a digital service unit DSU performs
     these functions.
  
     (1995-01-30)