NTP
                           NTP 297-1001-100                  PAGE 17
                          PREL., ISSUE 01D03
                               79 09 21



  8.   CALL PROCESSING


  INTRA-OFFICE CALL

  8.01   The sequence  of events which occur when  processing a call
  connection between subscriber lines connected  to the same office,
  is described in Appendix 1.


  INTER-OFFICE CALL

  8.02    The  sequence of  events  which  occur when  processing  a
  connection between an  originating trunk and a  terminating trunk,
  is described in Appendix 2.









































                  DMS-100 FAMILY SYSTEM DESCRIPTION
                  (c) NORTHERN TELECOM LIMITED, 1978