Term of the Moment

electromagnetic radiation


Look Up Another Term


Definition: Class 4


A telephone term for equipment and services that are non-customer facing. The Class nomenclature was coined by AT&T. See tandem switch and Class 5.


A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
misc