Telephone
From Memory Alpha, the free Star Trek reference.
The telephone (or "phone" for short) was an Earth communications device invented by Alexander Graham Bell. This device was commonly employed between the latter-19th century and mid-21st century.
In 2004, the Xindi-Reptilian Damron would contact Loomis via telephone when he wished to request another blood bank. (ENT: "Carpenter Street")
In 2367, Data communicated with Jean-Luc Picard in a Dixon Hill holoprogram by routing his communication into the telephone in Hill's office, as to minimize disruption to the program. (TNG: "Clues")
The Malcorians also used devices very similar to 20th century Earth phones. (TNG: "First Contact")
In 2370, Lieutenant Commander Data experienced a vision in which an antique telephone was ringing inside his body. When the android opened his chest plate and picked up the receiver, he heard Sigmund Freud on the receiving end, telling Data to "kill them all" before it was too late. This "warning" was later revealed to be in reference to the interphasic creatures that were threatening the crew of the USS Enterprise-D. (TNG: "Phantasms")
A telephone booth was located outside of Alexandria Books in the 21st century. (VOY: "11:59")
A "phone call" was still a common figure of speech into the 24th century. (VOY: "Life Line")
In 2373, Q told Captain Kathryn Janeway that he had "taken the proverbial phone off the hook", after she attempted to call security and have him removed. (VOY: "The Q and the Grey")
