e/Hook flash

Information
has gloss	eng: Hook flash or flash (known in the UK as "recall") is a button on a telephone that simulates quickly hanging up then picking up again (a quick off-hook/on-hook/off-hook cycle). This action can signal the telephone exchange to do something. A common use of hook flash is to switch to another incoming call with the call waiting service. Another use is to indicate a request for voice conferencing. For example, a user may use a procedure like the following to initiate three-way calling:
lexicalization	eng: Hook Flash
instance of	c/Telephony signals

Meaning
German
has gloss	deu: Die Rückfragetaste, häufig auch R-Taste, dient in der Telefonie dazu, an private oder öffentliche Telekommunikationsnetze Kommandos zu signalisieren, die über die Übermittlung der anzurufenden Rufnummer hinausgehen. Dies kann z. B. eine Weitervermittlung eines Gesprächs an einen anderen Teilnehmer sein.
lexicalization	deu: Rückfragetaste