Was this the first Ringtone?

1956: First ringtone ?

This article from Popular Electronics dated 1956 reads:

"Telephone users will welcome the news that the Bell Telephone Laboratories is experimenting with a new device that will eliminate the b-r-r-r-ing of present-day instruments. The gadget, using transistors, will produce pleasant musical tones resembling those of a clarinet.
Sound emanates through the louvred area at the base of the set, shown in the photo with a white background."

ORIGINAL ARTICLE AT:
http://www.textually.org/ringtonia/