On This Day in Telephone History March 3RD 1896 United States patent No. 555,725, System for selective ringing on 4 party lines, was issued to Angus S. Hibbard. Selective ringing makes it possible to ring any of the four parties on the line without all bells sounding. Selective Ringing found a wide variety of party line service applications.

On This Day in Telephone History March 3RD 1896

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On this Day in Telephone History, March 3RD 1896, was the beginning of Party Line Technology. United States patent No. 555,725, System for selective ringing on 4 party lines, was issued to Angus S. Hibbard. Selective ringing makes it possible to ring any of the four parties on the line without all bells sounding. Selective Ringing found a wide variety of party line service applications.