This ad appeared in the Sunday Times just a few weeks after the Magazine ran an article explaining how the telephone system works. That article, from December 4, quoted a recent telephone census that said New York had 310,000 phones. This ad shows that figure dates back to 1908.
The ad claims that the usefulness of your telephone service is measured by the number of people with whom it enables you to talk, and the class of people it reaches. What exactly were they trying to say? Was there a tiered phone service system in 1910, where lower class people had an inferior service that only allowed them to talk to each other?
New York Telephone Company ad (PDF)
From January 8, 1911