Science fiction writer Arthur C. Clarke proposes communications satellites. Telcos install nationwide numbering plan. 1950 Party lines make up 75 percent of all telephone lines. 1955 Modem first described by Ken Krechmer, A. W. Morten, and H. E. Vaughn. Texas Instruments introduces the silicon-based transistor.
Telephone cables start to use plastic insulation.
Bell Labs releases design information to Western Electric for modular telephone cords and jacks 1975 Last manual telco switchboard in Maine is retired. 1993 Telecom Relay Service available for the disabled. 1995 Nationwide Caller ID implemented. Burung Pemangsa , Penyeimbang Alam Mengenal Dr. TI Lagi tentang ajinomoto.