Symbol 5313 from IEC 60417 - Title/Meaning: Loss of frame alignment Function/description: To indicate that frame alignment has been lost.
Additional information: 
Published in: Supplement G, 1985
Own work using: iso.org/obp/graphics/grs/d25e7ebf-c0c4-44a2-9518-f8fd9777edf7 200.png
Vectorization:  Mrmw