to (be able to) make contact; to (be able to) get in touch
to contact; to get in touch with; to check in (with)
contacting; getting in touch; communication; call; message
to keep in contact (e.g. by phone, mail, etc.); to keep in touch
message; informative matter
(connecting) passageway; accessway; walk-through; skyway; sky bridge
contact network; phone tree; contact information for relevant people (in a given organization)
to lose contact with (someone); to stop communication with; to go missing; to disappear
liaison group; liaison committee; liaison council
correspondence notebook (e.g. between teacher and parents); contact notebook; communication notebook
de-facto embassy; liaison office
connecting station; station where you change
undeliverable item notice
de-facto embassy; liaison office
connection (interline) ticket
joint carriage; through-ticketing; transportation of passengers or freight handled by two or more companies via an arrangement