The list on the left includes pairs of gateway signaling protocals anf PDTN?
A.
B.
C.
D.
The list on the left includes pairs of gateway signaling protocals anf PDTN?
The list on the left includes pairs of gateway signaling protocals anf PDTN?
The list on the left includes pairs of gateway signaling protocals anf PDTN?
The list on the left includes pairs of gateway signaling protocals anf PDTN?
A.
B.
C.
D.