Symbol 5509 from IEC 60417 - Title/Meaning: Disconnection Function/description: To identify a mode of operation in which the connection for information exchange with external devices is cancelled or switched off, for example on telephone equipment to identify the control which allows the user to finish a call and make a new call without replacing the handset.
Additional information: 
See ITU-T recommendation E.121
Note was editorially improved to be aligned with notes for 5004 and 5508 on 2008-01-07
Published in: Amendment 2, 2002,3C/490/FDIS,3C/416/CDV,3C/408/INF
Own work using: iso.org/obp/graphics/grs/7e1d56be-84a5-4548-bca8-957d79b0dfbd 200.png
Vectorization:  Mrmw