Data and Phone Distribution Systems


  • Introduction

 Its patent was obtained on 12 March 1889 by Almon B. Strowger, who was an undertaker in Kansas. Strowger set his mind on building an automatic switchboard in order to save his profession. Because his biggest competitor’s wife was working at telephone switchboard of Kansas city and was transferring calls of customers who called Strowger to her husband. Unable to find any remedies to prevent this situation, Storwher fastened his work and finally managed to build an automatic telephone switchboard. The first of the automatic telephone switchboards manufactured by Strowger entered into service at La Porte Post office in 3 November 1892. This new invention soon became widespread at every corner of USA and people started to call it “phone without girl”.

There were three different keys on the telephones that connected to this switchboard. The first of these keys stood for units digit, the second one for order of ten, and the third for order of hundred. For example, in order to call a phone with a number of 389, you had to press three times for the key that belonged to order of hundred, eight times for the key that belonged to order of ten, and nine times for the key that belonged to unit digit. The absent-minded people who forgot how many times they pressed on which key were usually talking with people which had nothing to do with where they were calling.

The first telephone that had “number dial” on it was entered into service by a private phone company called P.A.X. at Milwaukee state, City Hail on 1896.

Since 1896 to today, telephone has been, without a doubt, one of the most important means of communication in our lives.