QUESTION: 61

What must be accomplished to draw dial tone on either a loop—start analog line or a ground—start analog trunk?

Short tip and ring on a loop—start line, and short tip to ground on a
ground—start trunk
Short tip and ring on a loop—start line, and short ring to ground on a
ground—start trunk
Short ring to ground on a loop—start line, and short tip and ring on a
ground—start trunk
Short ring to ground on a loop—start line, and short tip to ground on a
ground—start trunk

Answer(s): B

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QUESTION: 62

What is the difference in alerting between a loop-start analog line and a ground-start analog trunk?

Loop—start analog lines use only ringing, whereas ground—start analog
trunks use both ringing and ground—on—tip.
Loop—start analog lines use only ringing, whereas ground—start analog trunks
use both ringing and ground—on—ring.
Loop—start analog lines use both ringing and ground on tip, whereas
ground—start analog trunks use only ground—on—tip.
Loop—start analog lines use only ringing, whereas ground—start analog trunks
use ringing, round—on—ring and ground—on—tip.

Answer(s): A

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While troubleshooting a problem with an analog ground-start trunk, the technician decides to check the wiring. The following observations are made: Wire A measures -48 vdc relative to ground. Wire B is floating. Based on this information, how should Wires A and B connect to the ground-start trunk circuit on the trunk card in the PBX?