Telephone ads 100 years ago [telecom]

100 years ago AT&T ran an extolling their maintenance:

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(right side)

The Automatic Electric Co. ran ad touting its P-A-X systems. In addition to basic communication, their system also offered code call, emergency calls, and conference calls.

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I'll leave it others to decide how far we advanced in the last

100 years given all the network crashes reported here.
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