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Category:Telephony

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Telephony class in the US Army, 1917
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.

C

D

T

Pages in category "Telephony"

The following 130 pages are in this category, out of 130 total.

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

O cont.

P

R

S

T

U

V

W

Media in category "Telephony"

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