Ok, So I know this is a strange question and might be off-topic, but I really do not know where is the best place to ask it ( and where better that a SE site of network engineers / designers ).
In the sphere of CAD drafting ( Architects, structural engineers, electrical etc.. ) there are standard drafting symbols which are well defined and recognized almost universally.
For example electricity plan symbols ( may it be a switch, a ceiling lamp, water proof lamp, emergency exit sign) or a plumbing plan ( drains, valves, faucets , Water heaters ) or in electronics (resistor, diode , LED, power source ) or actually almost any other technical area ( may it be CCTV system, Lasers optometrics or pump design ) even in military strategy / tactical planning there are well recognized symbols.
Some of these are defined by ISO / DIN / ANSI and some are just conventions, but in many cases dedicated softwares use them as libraries and the point is that they are a universal language which is understood by professionals almost anywhere in the world.
My question is very simple, is there a universally recognized standard for NEWTORK design CAD symbols which will cover all possible or frequent components ( firewall, switch, router, wifi antenna, DB, Backup disk, fiber/Ethernet cables, Rj45 socket etc etc .. ) and can be used in a plan for example ?
And if yes - where could I see it ?
I Know there are some symbols by CISCO but these are more like icons that might go well on a power-point but not on a technical drawing of a plan, and further more they are not really easy to sketch by hand nor universally recognized.
I also found an ISO standard called
ISO 14617-15:2002(en) Graphical symbols for diagrams — Part 15: Installation diagrams and network maps
but I can not find the real symbols in use anywhere or even an example application or definition.
Until today I Just use my own symbols that I invented but understandably many times i find myself in need to explain to colleagues / installers what those really are and this is not a
long term good solution.