Category:Telephony

Telephony class in the US Army, 1917

The use of devices for voice communication, for example, cellular and digital telephone systems.

See the Telephone article for a history of the telephone.

Subcategories

Subcategories

This category has the following 4 subcategories, out of 4 total.

Pages in category "Telephony"

The following 140 pages are in this category, out of 140 total.

Media in category "Telephony"

The following 8 files are in this category, out of 8 total.