Which of the following technologies is used on the backbone of an ISDN?
A.
VDSL
B.
SDSL
C.
OC3
D.
ATM
Which of the following technologies is used on the backbone of an ISDN?
Which of the following technologies is used on the backbone of an ISDN?
Which of the following technologies is used on the backbone of an ISDN?
Which of the following technologies is used on the backbone of an ISDN?
A.
VDSL
B.
SDSL
C.
OC3
D.
ATM