Recommendation B.101)
           GRAPHICAL SYMBOLS AND RULES FOR THE PREPARATION OF DOCUMENTATION IN TELECOMMUNICATIONS
               The CCITT,
               which cooperates in the work of the CCI/IEC Joint Working Group set up  for
         the purpose of establishing internationally agreed graphical  symbols  and  rules
         for the preparation  of  documentation  and  for  item  designations  (see  CCITT
         Recommendation A.13 or CCIR Resolution 23),
         recommends
               that, on diagrams for international use concerning telecommunications,  the
         Administrations and recognized private operating agencies of  the  CCIs  and  CCI
         Secretariats should use the graphical symbols for diagrams given  in  IEC  Series
         617  publications  and  should  observe  the  rules  for   the   preparation   of
         documentation and for item designation laid down in  IEC,  Publications  113  and
         750.
               Administrations wishing to use symbols  on  equipment  are  recommended  to
         refer to IEC Publication 417.
               Note 1 - See CCIR Resolution 23.
               Note 2 - References of relevant publications (updated in 1988).
               IEC Publication 113: "Diagrams, charts, tables"
               113-1  (1971)            (Definitions and classification)
               113-2  (1971)            (Item  designation  of  components)  replaced  by
                  Publication 750
               113-3  (1974)            (General recommendations for the  preparation  of
                  diagrams)
               113-4  (1975)            (Recommendations for the preparation  of  circuit
                  diagrams)
               113-5  (1975)            (Preparation of interconnection diagrams and tables)
               113-6  (1976 and
                      Amend. 1 1983)  (Preparation of unit wiring diagrams and tables)
               113-7  (1981)            (Preparation of logic diagrams)
               113-8  (1982 and
                       Amend. 1 1983)  (Preparation of diagrams for system manuals)
               IEC  Publication  117:  "Recommended  graphical   symbols",   replaced   by
         Publication 617
               IEC Publication 416: (1972 and 1978 amendment No. 1):  "General  principles
               for the formulation of graphical symbols"
               IEC Publications 417: (1973 and 7 supplements of 1974,  1975,  1977,  1978,
               1980, 1982 and 1985): "Graphical symbols for use on equipment"
               IEC Publication 617: "Graphical symbols for diagrams"
               617-1  (1985):     General  information,  General  Index.  Cross-reference
                  tables
               617-2  (1983):     Symbol elements, qualifying symbols and  other  symbols
                  having general application
               617-3  (1983)      Conductors and connecting devices
               617-4  (1983)      Passive components
               617-5  (1983)      Semi-conductors and electron tubes
               617-6  (1983)      Production and conversion of electrical energy
               617-7  (1983)      Switchgear, controlgear and protective devices
               617-8  (1983)      Measuring instruments, lamps and signalling devices
               617-9  (1983)      Telecommunications: Switching and peripheral equipment
               617-10 (1983)      Telecommunication: Transmission
               617-11 (1983)      Architectural and topographical installation plans  and
                  diagrams
               617-12 (1983)      Binary logic elements
               617-13 (1983)      Analogue elements
               IEC Publication (1983): "Item designation in electrotechnology"








         1)      A similar text will be submitted to the CCIR as a revision of Rec. 461-3.




         Fascicle I.3 - Rec. B.10                  PAGE1