DIAGRAM INFORMATION
SYMBOLS


All BPO diagrams consist of symbols.  Most are just related to the telecommunications industry, although some are general electrical symbols.

Use the relevant links below to help identify specific symbols on the following subjects:-


AT/ATE DIAGRAMS
RELAYS
SELECTORS - OLD SYMBOLS
SELECTORS - NEW SYMBOLS
SELECTORS - TRUNKING
TELEPHONY 1
TELEPHONY 2
TWO MOTION
UNISELECTOR
WIRING - CONNECTIONS
WIRING - TWISTED BUNCHES

 

 

 
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Last revised: September 12, 2020

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