In legacy $($i$.$e$.2$G$,3$G$)$ wireless backhaul networks $($where voice is not packetized$),$ each wireless call carried over the backhaul network occupied how much bandwidth $?$

$($a$)53$ bytes

$($b$)$ One DS$-0$

$($c$)$ One DS$-1$

$($d$)$ One DS$-3$

$($e$)64$ Kbps

$($f$)$ Both $($b$)$ and $($e$)$ above