![60 years ago "Extension phones help all year round, but doubly so at Christmas" [telecom]](https://forums.cabling-design.com/media/24159/conversions/603c4252dd8da8.95213044-medium.jpg)
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60 years ago the Bell System ran an ad in LIFE for extension phones.
60 years ago "Extension phones help all year round, but doubly so at Christmas" [telecom]
Dec 10, 2018
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