On This Day in Telephone History December 2ND 1964 & 1968 Blast-resistant Transcontinental Cable Routes Opened for Service. December 2ND 1964 - A blast-resistant underground transcontinental cable route adding 9,000 telephone circuits to the 15,000 spanning the country was opened for service. The $200 million system had 11 manned communications centers and more than 900 intermediate repeater stations buried underground. December 2ND 1968 - AT&T completed another major segment of its $210 million Miami-to-Boston "hardened“ underground communications system by opening 32,000 voice channels between Washington. D.C. and New York. The Miami-to-Washington section went into service in 1967 and the New York-to-Boston section was scheduled for completion in mid 1969.

On This Day in Telephone History December 2ND 1964 & 1968

by

On This Day in Telephone History December 2ND 1964 & 1968 Blast-Resistant Transcontinental Cable Routes Opened for Service. December 2ND 1964 – A blast-resistant underground transcontinental cable route adding 9,000 telephone circuits to the 15,000 spanning the country was opened for service. The $200 million system had 11 manned communications centers and more than 900 intermediate repeater stations buried underground. December 2ND 1968 – AT&T completed another major segment of its $210 million Miami-to-Boston “hardened“ underground communications system by opening 32,000 voice channels between Washington. D.C. and New York. The Miami-to-Washington section went into service in 1967 and the New York-to-Boston section was scheduled for completion in mid 1969.