central office exchange service

1 definition found

central office exchange service - Free On-line Dictionary of Computing (26 May 2007) :

  Central office exchange service
  Centrex
  
     <communications> (Centrex) A PBX service providing
     switching at the central office instead of at the company
     premises.  Typically, the telephone company owns and manages
     all the communications equipment necessary to implement the
     PBX and then sells various services to the company.
  
     (1999-10-27)