1878: Coy opens the first telephone exchange (in New Haven)
First underground telephone cables
First long-distance line: Boston to Providence
1890: Telephone service begins between Tokyo and Yokohama
First automatic exchange in Europe opens in Berlin
1900: Rural Telephone Lines And How To Build Them
First multiplexed telephone circuits
Transcontinental telephone line completed
First transatlantic voice transmission
1915: First transcontinental phone call
1915: Carty achieves transcontinental telephone service
1921: 1921 High Efficiency Switchboards
Type C carrier system deployed
First transatlantic phone call
1929: A Desert Span, Building Trunk Telephone Lines (AT&T)
First telephone call routed around the world
1937: Building and Maintaining Rural Telphone Lines
1938: The Voice of the City
1938: Coaxial cable enables broadband
1942: Modern Caravans
1943: Newfoundland Long Lines, a WWII Film (U.S. Army / AT&T)
1946: Television and The Telephone, Microwave Broadcasting (AT&T)
Microwave relay network begun
1947: A Million Times a Day
1948: Planning For Telephones In Large Buildings
1950: Cable to Cuba, Laying Undersea Cable (AT&T)
1954: No. 3 Toll Switchboard Bul. 5410
1955: 1955 Central Office Equipment
1955: Dialing the Nation (AT&T)
1956: Transatlantic telephone cable (TAT-1)
1958: Submarine Cable Systems Development
1959: Cable to the Continent, the Second Transatlantic Telephone Cable (AT&T)
T1 digital carrier system developed
1961: The Far Sound, a History of Long Distance Communications (AT&T)
1962: Telstar: first communication satellite
TPC-1: First transpacific telephone cable
1965: Early Bird: First commercial geostationary satellite
1967: The Astonishing, Unfailing Bell System
1970: Moon Orbit Communications, Apollo 8 (AT&T)
1975: Fiber optic telephone transmission
1977: Single Sideband, Microwave Transmission (AT&T)
1977: Lightwave (AT&T)
1978: Telephone Office Planning and Engineering System (Bell Labs)
1978: Advanced Mobile Phone Service (AMPS), Cell Phones (AT&T)
1979: Tour of AT&T's Network Operations Center (AT&T)
1979: How Pacific Bell Prepared for West Coast Earthquakes
ISDN development begins at Bell Labs
1984: 1984 MCi Network Map
NTT launches world's first ISDN service
1984: How to Install Modular Jacks by Yourself (AT&T)
TAT-8: First transatlantic fiber optic cable
TPC-3: First transpacific fiber optic cable
SS7 signaling becomes widespread
1992: Caller ID becomes widespread
VoIP demonstrated commercially
1998: Croak pioneers Voice over IP at AT&T