<Ul> <Li> 16 July 1920 : World 's first radiotelephone service commences public service between Los Angeles , Calif. and Santa Catalina Island . </Li> <Li> 11 April 1921 : Opening of deep sea cable from Key West , Fla. , to Havana , Cuba ( 115 miles ) . </Li> <Li> 22 December 1923 : Opening of second transcontinental telephone line via a southern route . </Li> <Li> 7 March 1926 : First transatlantic telephone call , from London to New York . </Li> <Li> 7 January 1927 : Transatlantic telephone service inaugurated for commercial service ( 3500 miles ) . </Li> <Li> 17 January 1927 : Opening of third transcontinental telephone line via a northern route . </Li> <Li> 7 April 1927 : world 's first videophone call via an electro - mechanical AT&T unit , from Washington , D.C. to New York City , by then - Commerce Secretary Herbert Hoover . </Li> <Li> 8 December 1929 : Opening of commercial ship - to - shore telephone service . </Li> <Li> 3 April 1930 : Opening of transoceanic telephone service to Argentina , Chile , and Uruguay and subsequently to all other South American countries . </Li> <Li> 25 April 1935 : First telephone call around the world by wire and radio . </Li> <Li> 1937 : The Western Electric type 302 telephone becomes available for service in the United States . </Li> <Li> 8 December 1937 : Opening of fourth transcontinental telephone line . </Li> <Li> 1941 : Multi-frequency dialing introduced for operators in Baltimore , Maryland </Li> <Li> 1942 : Telephone production is halted at Western Electric until 1945 for civilian distribution due to the retooling of factories for military equipment during WWII . </Li> <Li> 1946 : National Numbering Plan ( area codes ) </Li> <Li> 1946 : first commercial mobile phone call </Li> <Li> 1946 : Bell Labs develops the germanium point - contact transistor </Li> <Li> 1947 : December , W. Rae Young and Douglas H. Ring , Bell Labs engineers , proposed hexagonal cells for provisioning of mobile telephone service . </Li> <Li> 1948 : Phil Porter , a Bell Labs engineer , proposed that cell towers be at the corners of the hexagons rather than the centers and have directional antennas pointing in 3 directions . </Li> <Li> 1950 : The Western Electric Type 500 telephone becomes available in the United States after announcement in 1949 . </Li> <Li> 30 June 1948 : First public demonstration of the transistor by Bell Telephone Laboratories . </Li> <Li> 10 November 1951 : Direct Distance Dialing ( DDD ) first offered on trial basis at Englewood , New Jersey , to 11 selected major cities across the United States ; this service grew rapidly across major cities during the 1950s </Li> <Li> 1955 : the laying of trans - Atlantic cable TAT - 1 began - 36 circuits , later increased to 48 by reducing the bandwidth from 4 kHz to 3 kHz </Li> <Li> 1958 : Modems used for direct connection via voice phone lines </Li> <Li> 1960 : Bell Labs conducts extensive field trial of an electronic central office in Morris , Illinois , known at the Morris System . </Li> <Li> 1960 's : Bell Labs developed the electronics for cellular phones </Li> <Li> 1961 : Initiation of Touch - Tone service trials </Li> <Li> 1962 : T - 1 service in Skokie , Illinois </Li> <Li> 1963 , November 18 : AT&T commences the first subscriber Touch - Tone service in the towns of Carnegie and Greensburg , Pennsylvania , using push - button telephones that replaced rotary dial instruments . </Li> <Li> 1965 ( May 31 ) : The world 's first electronic switching system commences commercial service in Succasunna , New Jersey in form of the 1ESS . </Li> <Li> 1965 : first geosynchronous communications satellite - 240 circuits or one TV signal </Li> </Ul>
<Ul> <Li> 16 July 1920 : World 's first radiotelephone service commences public service between Los Angeles , Calif. and Santa Catalina Island . </Li> <Li> 11 April 1921 : Opening of deep sea cable from Key West , Fla. , to Havana , Cuba ( 115 miles ) . </Li> <Li> 22 December 1923 : Opening of second transcontinental telephone line via a southern route . </Li> <Li> 7 March 1926 : First transatlantic telephone call , from London to New York . </Li> <Li> 7 January 1927 : Transatlantic telephone service inaugurated for commercial service ( 3500 miles ) . </Li> <Li> 17 January 1927 : Opening of third transcontinental telephone line via a northern route . </Li> <Li> 7 April 1927 : world 's first videophone call via an electro - mechanical AT&T unit , from Washington , D.C. to New York City , by then - Commerce Secretary Herbert Hoover . </Li> <Li> 8 December 1929 : Opening of commercial ship - to - shore telephone service . </Li> <Li> 3 April 1930 : Opening of transoceanic telephone service to Argentina , Chile , and Uruguay and subsequently to all other South American countries . </Li> <Li> 25 April 1935 : First telephone call around the world by wire and radio . </Li> <Li> 1937 : The Western Electric type 302 telephone becomes available for service in the United States . </Li> <Li> 8 December 1937 : Opening of fourth transcontinental telephone line . </Li> <Li> 1941 : Multi-frequency dialing introduced for operators in Baltimore , Maryland </Li> <Li> 1942 : Telephone production is halted at Western Electric until 1945 for civilian distribution due to the retooling of factories for military equipment during WWII . </Li> <Li> 1946 : National Numbering Plan ( area codes ) </Li> <Li> 1946 : first commercial mobile phone call </Li> <Li> 1946 : Bell Labs develops the germanium point - contact transistor </Li> <Li> 1947 : December , W. Rae Young and Douglas H. Ring , Bell Labs engineers , proposed hexagonal cells for provisioning of mobile telephone service . </Li> <Li> 1948 : Phil Porter , a Bell Labs engineer , proposed that cell towers be at the corners of the hexagons rather than the centers and have directional antennas pointing in 3 directions . </Li> <Li> 1950 : The Western Electric Type 500 telephone becomes available in the United States after announcement in 1949 . </Li> <Li> 30 June 1948 : First public demonstration of the transistor by Bell Telephone Laboratories . </Li> <Li> 10 November 1951 : Direct Distance Dialing ( DDD ) first offered on trial basis at Englewood , New Jersey , to 11 selected major cities across the United States ; this service grew rapidly across major cities during the 1950s </Li> <Li> 1955 : the laying of trans - Atlantic cable TAT - 1 began - 36 circuits , later increased to 48 by reducing the bandwidth from 4 kHz to 3 kHz </Li> <Li> 1958 : Modems used for direct connection via voice phone lines </Li> <Li> 1960 : Bell Labs conducts extensive field trial of an electronic central office in Morris , Illinois , known at the Morris System . </Li> <Li> 1960 's : Bell Labs developed the electronics for cellular phones </Li> <Li> 1961 : Initiation of Touch - Tone service trials </Li> <Li> 1962 : T - 1 service in Skokie , Illinois </Li> <Li> 1963 , November 18 : AT&T commences the first subscriber Touch - Tone service in the towns of Carnegie and Greensburg , Pennsylvania , using push - button telephones that replaced rotary dial instruments . </Li> <Li> 1965 ( May 31 ) : The world 's first electronic switching system commences commercial service in Succasunna , New Jersey in form of the 1ESS . </Li> <Li> 1965 : first geosynchronous communications satellite - 240 circuits or one TV signal </Li> </Ul>
where was the first transatlantic phone call made
where was the first transatlantic phone call made
from London to New York
from London to New York