I would like to know what TT abbreviation/acronym stands for and what it means. It is related to meeting rooms/business area. I could not find an answer on google search, related to this domain. A synonym for meeting room is "Tagungsraum", but can't figure out the double T.
"TT" is no generally used or understood abbreviation and may be particular to the social / company context you encountered it in.
I never heard that abbreviation before.
According to acronym finder TT could simply mean Talk To, which would make the question out of topic for German SE, since no German is involved.