NTP


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




















                        DMS-100 FAMILY SYSTEM

                             DESCRIPTION
































                 (c) NORTHERN TELECOM LIMITED, 1978


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



                              CONTENTS

                                                            PAGE

  1.   INTRODUCTION...........................................1

  2.   OVERVIEW...............................................3

  3.   HARDWARE SYSTEM DESCRIPTION............................5

  4.   MESSAGE SYSTEM.........................................12

  5.   SOFTWARE SYSTEM DESCRIPTION............................14

  6.   MAINTENANCE SYSTEM.....................................15

  7.   ADMINISTRATION AND TRAFFIC.............................16

  8.   CALL PROCESSING........................................17

  9.   SYSTEM REQUIREMENTS SUMMARY............................18

  10.  ABBREVIATIONS..........................................19



                             APPENDICES

  1.   Call Description DMS-100 Intra-Office Call

  2.   Call Description DMS-200 Inter-Office Call


























                 (c) NORTHERN TELECOM LIMITED, 1978


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



                               FIGURES

  1.   DMS-100 Family Block Diagram...........................F-1

  2.   Central Control Complex Bays...........................F-2

  3.   Switching Network Block Diagram........................F-3

  4.   Floor Plan DMS-100 System. 4500 Lines Minimum..........F-4

  5.   Floor Plan. DMS-200 System.............................F-5
       10,000 Trunk Toll Office.


                               TABLES



  A.   Mechanical, Environmental and Power Characteristics....20

  B.   Performance Characteristics............................21




































                 (c) NORTHERN TELECOM LIMITED, 1978