A collection of conventional graphic symbols for designing communication systems for various purposes.
Based on GOST 21.406-88 "System of Design Documentation for Construction. Wired Communication Equipment. Conventional Graphic Symbols on Diagrams and Plans."
Coverage:
- Telephone exchanges.
- Conversion equipment.
- Interface equipment.
- Combination equipment.
- And others.

Format: DWG.
460 elements.
100 according to GOST.
For convenience, the elements are organized into a tool palette of AutoCAD 2010 blocks.

The archive also contains files created as standard DWG drawings, compatible with AutoCAD 2004-2014, Kompas, ZWCAD, nanoCAD, BricsCAD, and others.