Symbol 6440 from IEC 60417 - Title/Meaning: Communication ports, optical port Function/description: To indicate the optical port, bidirectional.
Additional information: 
For technical details, see IEC 62052-11.
Own work using: iso.org/obp/graphics/grs/5052fb7e-2445-400a-8a14-44162e2ec011 200.png
Vectorization:  Mrmw