Japan reproduces Bell telephones
First telephone exchange opens in London
Telephone service begins in Canada, Mexico, Australia, Sweden and Denmark
Telephone Exchanges open in Berlin, Vienna, and Sydney
First telephone lines in Constantinople and Egypt
Metallic circuit introduced
First telephone exchanges in India, Russia, and Shanghai
First long-distance line: Boston to Providence
American Bell forms AT&T as subsidiary to operate long distance network
First multiplexed telephone circuits
Dial phones spread to major cities
Type C carrier system deployed
Direct long-distance dialing begins
Transistors first used in telephone equipment
Improved echo suppressors deployed
T1 digital carrier system developed
Touch-Tone dialing introduced
TPC-1: First transpacific telephone cable
Boyle and Smith invent the charge-coupled device, a chip that transforms light into electrical info
No. 4 ESS digital toll switch deployed
Japan achieves nationwide automatic telephone service
Northern Telecom DMS-100 digital switch
First trial of Bell Labs' cellular communication system begins
Bell Labs creates first single-chip digital signal processor (DSP)
ISDN development begins at Bell Labs
NTT launches world's first ISDN service
TAT-8: First transatlantic fiber optic cable
TPC-3: First transpacific fiber optic cable
SS7 signaling becomes widespread
VoIP demonstrated commercially
