Free AutoCAD telecom transmission symbols (DWG), IEC 60617-10 style

About IEC 60617-10

IEC 60617 is the international standard for graphical symbols for diagrams. Part 10 covers telecommunications: transmission, from antennas and waveguides to modulation, filters, amplifiers and optical fibre. This library follows the figures of that part.

These symbols are our own drawings after the figures of the standard. They are not copied from it, and the library is not certified against it. Check them against the standard, your company standard or your customer’s legend before you decide to use a symbol.

Frequently asked questions

How do I draw a filter?

Use the block of the type you need: “Low-pass filter”, “High-pass filter”, “Band-pass filter” or “Band-stop filter”. The box, the two connections and the curve are drawn, and the reference FL1 is ready to number.

Where are telephone sets and selectors?

They belong to switching and peripheral equipment, part 9 of the standard, and are in the library “Telephone, selectors, sound and recording (IEC 60617)”. This one holds the transmission symbols.

Can I use the symbols in commercial projects?

Yes. They are free to use and modify in your own projects, including commercial ones. They are provided as is, without warranty.

Why do the marks have no reference?

Polarization, frequency lines and pulse shapes are not devices; they are marks that go next to or inside another symbol. They only have a remarks field, so you can combine them without extra attributes in the drawing.

Can I change a symbol or add attributes?

Yes. Open the DWG, edit a block with BEDIT to change it or add attributes, and save. To update drawings that already contain the block, run ATTSYNC or replace the block. Make a backup first: attribute values can be lost if ATTSYNC is used carelessly.

Where do I find a ready-made set of these symbols for AutoCAD?

AutoCAD itself ships only a small set of sample blocks, so a full symbol set has to come from a library. Download the ZIP on this page and open the DWG: every symbol is a block. Insert one with INSERT (Blocks palette, Libraries tab, then pick the DWG) or drag it from DesignCenter (ADCENTER). You can also download a single symbol on its own.