(historical) ISDN public telephone

a family, a household

establishment, foundation, setting up (a business etc.) / installation (of equipment)

set up, establish, found / install, put in, erect

to use / to employ / to make use of, to apply / to spend

ancient times, a very long time ago

connection, junction / keeping in contact; correspondence / communication, correspondence

connect with, get a hold of, get in touch with / communicate, correspond / connect to, have a junction

grey

the color grey / being in between two distinct states or conditions, as in a figurative grey area