Please match the CAS component to the office that it will apply.
(1)CAS E1 (2)CAS T1 (3)1.544 mb/s (4)2.048 mb/s
(5)RBS in-band (6)24 voice channels (7)30 voice channels (8)out-of-band signaling in time slot (I)London, United Kingdom (II)Chicago, United States

A.
(I)-(1 4 5 8);(II)-(2 3 7 6)

B.
(I)-(2 4 7 8);(II)-(1 3 5 6)

C.
(I)-(1 4 7 8);(II)-(2 3 5 6)

D.
(I)-(1 3 7 8);(II)-(2 4 5 6)