I.S. EN 60617-9:1997廢止
Graphical Symbols For Diagrams Part 9: Telecommunications: Switching And Peripheral Equipment
出版：National Standards Authority of Ireland
專家解讀視頻
Specifies switching systems and equipment, telephone, telegraph and data equipment, transducers, recorders and reproducers.
IEC 60617-9 Ed. 2.0 - Identical
ONORM EN 60617-9:1998 - Identical
DIN EN 60617-9 (1997-08) - Identical
BS EN 60617-9:1996 - Identical
SN EN 60617-9:1996 - Identical
NF EN 60617-9:1997 - Identical
EN 60617-9:1996 - Identical
SS EN 60617-9 Ed. 1 (1997) - Identical
UNE EN 60617-9:1997 - Identical
