Symbol 1396B from ISO 7000 - Title/Meaning: Transmission failure/malfunction 
Function/description: To indicate that the transmission has failed or is malfunctioning.
Own work using: iso.org/obp/graphics/grs/bb6760e9-7ad0-487b-b3dc-6ef8a5277e8a 200.png
Vectorization:  Mrmw